Megabit Modem
Megabit Modem 410F and
420F User Manual
Version 3.1.x
Catalog Number
MMD4080I1 Issue 1
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About this User Manual
ABOUT THIS USER MANUAL
Use this manual to install and configure the Megabit Modem 410F and 420F. This manual
provides instructions on:
•
•
•
•
•
•
•
information you will need to configure the modems
unpacking and inspecting the modems for installation
installing the modems
configuring system parameters
configuring the connection between the Megabit Modem 410F and 420F
monitoring and troubleshooting the modems
adaptive transmission, the bridging/routing operating mode, and Simple Network Management
Protocol (SNMP) management.
IP addresses used in this manual are for example only. You will acquire your own addresses
from your information services coordinator to configure the Megabit Modem 410F and 420F.
You will, however, use the IP address specified in “Accessing the Modem Web Pages” on
page 34 to access the Megabit Modem 410F and 420F from a Web browser.
DOCUMENT CONVENTIONS
Two types of messages, identified by icons, appear in the text.
Notes contain information about special circumstances.
Cautions indicate the possibility of equipment damage or the possibility of
personal injury.
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iii
Product Certifications
PRODUCT CERTIFICATIONS
FCC
Megabit Modem 410 and 420F
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
UL
CE
The Megabit Modem 410F and 420F meet all safety requirements per UL-1950 and cUL
standards.
The Megabit Model 420F meet all EMC and safety requirements per EN 300 386-02 and
IEC 950.
iv
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Table of Contents
Features................................................................................................................................2
Applications.........................................................................................................................3
Verify Package Contents .....................................................................................................5
Requirements for your System ............................................................................................6
Requirements for the Installation Site .................................................................................6
Flat-Surface Mount ...............................................................................................7
Wall Mount ...........................................................................................................8
Power Cable Options...........................................................................................................9
Attaching the Feet..............................................................................................................12
Setting the MDI/MDI-X Switch........................................................................................13
Powering Up and Checking LEDs ....................................................................................16
Connecting the PC to the RS-232 Port..............................................................................18
Determining IP Addresses for the Subnet .........................................................................22
Using the RS-232 management Port for Set Up................................................................24
Setting Up the PC to Access the Modem Web Pages .......................................................27
Setting Up a Static IP Address for the PC...........................................................27
Obtaining a Dynamic IP Address for the PC ......................................................29
Setting Up a Web Browser to Access the Modem Web Pages .........................................30
Disable Proxies....................................................................................................30
Set the Web Page Update Frequency..................................................................32
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vii
Table of Contents
Saving the Configuration to NVRAM.................................................................37
Resetting the Modem to Factory Defaults.........................................................................39
Resetting the ADSL Link....................................................................................54
WAN Statistics....................................................................................................61
Troubleshooting.................................................................................................................65
ADSL.................................................................................................................................67
Rate Adaptive Transmission..............................................................................................68
Rate Adaptation...................................................................................................68
Reach, Data Rate, SNR Margin, and Noise Environment...................................68
viii
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Bridging and Routing ........................................................................................................69
Bridging...............................................................................................................69
Routing................................................................................................................71
DHCP ..................................................................................................................71
Management Protocols ......................................................................................................72
SNMP..................................................................................................................72
MIB and Trap Support ........................................................................................72
DNS Resolution.................................................................................................................72
TFTP Server ......................................................................................................................73
WAN Interface Specifications...........................................................................................75
LAN Interface Specifications ............................................................................................75
Physical Specifications......................................................................................................76
Power Supply.....................................................................................................................76
Environmental ...................................................................................................................76
Compliance........................................................................................................................76
Protocols............................................................................................................................77
MIBs and Traps .................................................................................................................77
Hardware ...........................................................................................................................79
Installation Kit.....................................................................................................79
Connector Pinouts ...............................................................................................80
ADSL Port ............................................................................................80
10/100BASE-T Port..............................................................................80
Appendix B: Technical Assistance and Warranty _______________________________81
Technical Support..............................................................................................................81
World Wide Web...............................................................................................................81
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ix
Table of Contents
Billing ................................................................................................................................83
Returning a Product ...........................................................................................................84
Appendix C: Glossary ______________________________________________________87
Index____________________________________________________________________91
x
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ABOUT THE PRODUCT
1
The Megabit Modem® 410F and 420F use Asymmetric
Digital Subscriber Line (ADSL) technology and Discrete
MultiTone (DMT) line coding to provide a multi-megabit
connection between the two modems using a single-pair
telephone line. The Megabit Modem 410F and 420F are
designed to be used together, one at each end of a circuit,
with model 410F functioning as the ATU-C and model
420F functioning as the ATU-R.
PWR
MEGABIT
LINK
LAN
TX
RX
COL
MODEM 420F
SYNC
ADSL
TX
RX
MAR
The Megabit Modem 410F and 420F support the full DMT rate of 7.552 Mbps downstream and
928 kbps upstream. The Megabit Modem 410F and 420F can be used in fixed rate mode or in
rate adaptive mode. In rate adaptive mode, the modem sychnronizes at the maximum attainable
data rate depending on distance and line condition.
The Megabit Modem 410F and 420F are easy to install and configure. To install each modem:
•
connect a telephone cable from the modem to a wall phone jack that is wired for ADSL
service
•
•
connect a cable from the modem to a PC or an Ethernet hub for LAN service
connect a power cable to a local power source
To configure each modem, launch a Web browser on your PC and access the Megabit Modem
Configuration and Management Tool Web pages. Use the Web pages to configure the LAN,
WAN, and ADSL connection; configure other system parameters; and monitor ADSL, LAN,
WAN, and other networking functions. Or, you can access the modems through a PC connected
to the modem RS-232 management port and then use the Megabit Modem Setup Menu to
configure the modem parameters (these are a subset of the parameters that can be configured
using the Megabit Modem Configuration and Management Tool Web pages).
LEDs on the modem front panel provide continual status at-a-glance for network and modem
connections.
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1
Features
FEATURES
The Megabit Modem 410F and 420F provide:
•
fixed-rate or rate-adaptable ADSL transmission downstream at up to 7.552 Mbps and
upstream at up to 928 kbps
•
Dynamic Host Configuration Protocol (DHCP) server to provide network configuration
information including IP addresses to LAN devices
•
•
Trivial File Transfer Protocol (TFTP) for software upgrades
AccessGain™ software that provides access through an HTTP server to configure, manage,
and monitor the modem through a Web-based interface from the LAN or WAN port
•
LAN or WAN port
•
•
autosensing 10/100BASE-T Ethernet port for connection to the LAN
LEDs that provide continual status at-a-glance for power, LAN, and ADSL connections
Chapter 9, “Technical Reference” on page 67 provides more information about the technologies
implemented in the Megabit Modem 410F and 420F.
2
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Chapter 1: About the Product
APPLICATIONS
Use the Megabit Modem 410F and 420F for:
•
•
remote access to private networks, for example, telecommuting
point-to-point LAN extension, for example, connecting a remote network to a central site
Telecommuting Application
Corporate office
Service Provider
Home office
Local User
420F
Modem
420F
Modem
410F
Modem
410F
Modem
Router
Ethernet LAN
ADSL
ADSL
LAN Extension Application
Central site
Remote network
Ethernet LAN
420F
Modem
410F
Modem
Ethernet LAN
ADSL
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Applications
4
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WHAT YOU NEED TO START
2
410F and 420F. Install the Megabit Modem 410F (ATU-C) at one end of the circuit and a
•
•
the contents of the package are accurate as described on this page
(see “Requirements for your System” on page 6)
•
•
your facility meets installation site requirements (see “Requirements for the Installation
Site” on page 6)
you have made the choice for the power option for the modem (see “Power Cable Options”
on page 9)
VERIFY PACKAGE CONTENTS
As you unpack the Megabit Modem 410F or 420F, visually inspect the container for signs of
damage. If the equipment was damaged in transit, report the damage to the transportation
company and to the sales representative.
Check the contents of the package for the Megabit
Modem 410F or 420F and the following:
•
•
•
•
•
one black cable
P
WR
L
INK
LAN M
E
T
X
G
A
R
X
B
I
T
C
C
O
L
M
S
Y
N
O
ADSLD
T
X
E
M
R
one grey phone cord
four rubber, self-adhesive feet
two screws
R
X
4
2
M
A
0
F
power supply and optional power cord
(see “Power Cable Options” on page 9 for
options)
•
grey cable and DB-9 console port adapter
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5
Requirements for your System
If you need to store the modem for a prolonged period, store it in the original antistatic bag and
packaging. Observe environmental specifications as stated on page 76.
REQUIREMENTS FOR YOUR SYSTEM
You need the following hardware and software to complete the installation and configuration of
the Megabit Modem 410F or 420F:
•
•
•
•
PC with an Ethernet Network Interface Card (NIC)
TCP/IP network protocol stack (see the documentation for your operating system)
Web browser installed such as Netscape® or Internet Explorer® Version 4.0 or higher
Ethernet hub (optional)
You must select the locations to install the Megabit Modem 410F and 420F. You can install
modems either:
•
•
placed on a flat surface (shown on page 7)
mounted on a wall (shown on page 8)
Your facility must have the following minimum site requirements to install each modem:
•
•
power outlet
RJ-11 wall jack with DMT ADSL service (you provide)
6
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Chapter 2: What You Need to Start
Flat-Surface Mount
Do not stack the modems when installing on a flat surface. The modems do not
dissipate heat properly when stacked.
Place the modems on a flat surface, such as on a table or in a rack.
PWR
LINK
M
E
LAN
TX
G
A
RX
B
I
COL
T
M
SYNC
O
ADSLD
TX
E
M
RX
4
2
MAR
0
F
PWR
LINK
M
E
TXLAN
G
A
RX
B
I
COL
T
M
SYNC
O
ADSLD
TX
E
M
RX
4
2
MAR
0
F
Minimum
PWR
1-inch clearance
M
LINK
LANE
G
TX
A
B
RX
I
T
COL
M
O
SYNC
D
ADSL E
TX
M
MAR
4
RX
2
0
F
Minimum
1-inch clearance
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7
Requirements for the Installation Site
Wall Mount
Ensure the minimum dimensions (shown in the illustration) for spacing
between the modems are met to allow for heat dissipation, viewing of front
panel LEDs, and cabling.
Mount the modems on a wall using the hardware included in the installation kit. Observe the
minimum dimensions between multiple modems (shown in the illustration) to ensure sufficient
ventilation for heat dissipation.
MAR
RX
ADSL
TX
SYNC
COL
RX
LAN
TX
LINK
PWR
MAR
RX
ADSL
TX
SYNC
COL
X
R
LAN
X
T
LINK
PWR
3" to 4"
4.85"
MAR
RX
ADSL
TX
SYNC
COL
RX
LAN
TX
12"
LINK
Min. 3"
PWR
4.85"
8
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Chapter 2: What You Need to Start
POWER CABLE OPTIONS
The Megabit Modem 410F and 420F are available with a variety of power supplies and power
cords. The product part numbers are as follows:
Megabit Modem 410F is 150-2129-7x
Megabit Modem 420F is 150-2128-7x
When you order your modems, choose one of the following as the last number of the product
part number for your order to indicate which power cable option you need:
•
•
2 indicates a power supply for International use and does not include a power cord.
3 indicates a power supply for North American use and includes a North American
power cord.
•
•
4 indicates a Universal power supply and includes a European power cord.
5 indicates a Universal power supply and includes a UK/Ireland power cord.
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9
Power Cable Options
10
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INSTALLING THE MEGABIT MODEM
410F AND 420F
3
The Megabit Modem 410F and 420F are easy to install by:
•
•
•
•
attaching adhesive-backed feet
setting the MDI/MDI-X switch
connecting a cable from the modem to a PC or an Ethernet hub for LAN service
connecting a phone cord from the modem to a wall phone jack for DMT ADSL Internet or
other types of WAN services
•
•
connecting a power cable to a local power outlet
powering up and checking LEDs
Perform the installation described on the following pages (see “Requirements for the
Installation Site” on page 6 to determine where to place modems). Use the parts listed below in
the installation procedures.
Part
Function
Rubber feet (four)
Black cable
Attaches to the base of the modem.
Connects the modem 10/100BASE-T connector to the LAN through a hub
or to a PC NIC.
Grey cord
Connects the modem ADSL connector to the RJ-11 wall jack with DMT
ADSL service for access to the Internet or other types of WAN applications.
Power cable
Connects the modem POWER connector to the local power source. Power
supply optionally has a power cord. (See “Power Cable Options” on page 9
for selection options.)
Grey cable and
adapter
Connects the RS-232 management port to an ASCII terminal or a PC
running terminal emulation software. The adapter assembly connects to a
DB-9 connector on the PC. One RJ-45 connector installs in the adapter and
the other connector into the console port on the modem.
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11
Attaching the Feet
ATTACHING THE FEET
Attach each of the four adhesive-backed rubber feet to a footprint recess on the bottom of
the modem.
Rubber feet
Recess
F
0
M A R
2
4
R X
M
E
T X
A D S L
D
O
S Y N C
M
I T
C O L
B
R X
A
G
L T A X N
E
M
L I N K
P W R
12
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Chapter 3: Installing the Megabit Modem 410F and 420F
SETTING THE MDI/MDI-X SWITCH
Using the MDI/MDI-X switch, the Megabit Modem 410F and 420F can communicate with a
device on the LAN that is either MDI or MDI-X without having to change the cable
(a straight-through cable is supplied with the installation kit).
Set the switch for the 10/100BASE-T port to:
•
MDI-X when you are connecting to a device with an MDI port such as a PC with an
Ethernet NIC
•
MDI when you are connecting to a device with an MDI-X port such as a hub, repeater,
bridge, or router
For connection to
devices such as
a PC
MDI-X
For connection to
devices such as
a hub
MDI
ADSL
POWER
MDI MDI-X
10BASE-T
RS-232 MGMT
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13
Installing Cabling
INSTALLING CABLING
Install the cables:
•
•
•
the black cable for the 10/100BASE-T LAN connection
the grey phone cord for the ADSL port WAN connection
the power cable to the modem power connector then to the facility power outlet (cable
specified on page 11)
.
Megabit Modem 410F or 420F
PC, hub or other
network device
10/100BASE-T port
RS-232 MGMT port
M
D
I
M
DI-X
ADSL port
10BASE-T
RS-232
M
Power
connector
GMT
D
SL
O
W
ER
Wall jack with DMT ADSL
service
To power
outlet
14
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Chapter 3: Installing the Megabit Modem 410F and 420F
The following table shows the signal on each pin for the ADSL port. The connector for this
interface is an RJ-11.
Pin
Signal
1
2
3
4
5
6
Not used
Not used
Ring
Tip
Not used
Not used
The following table shows the signal on each pin when the switch is in either the MDI or the
MDI-X position for the 10/100BASE-T port. The connector for this interface is an RJ-45.
MDI
MDI-X Signal
Description
1
2
3
4
5
6
7
8
3
6
1
4
5
2
7
8
TX+
Transmit Data (+)
Transmit Data (-)
Receive Data (+)
Not used
TX-
RD+
Not used
Not used
RD-
Not used
Receive Data (-)
Not used
Not used
Not used
Not used
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15
Powering Up and Checking LEDs
Powering Up and Checking LEDs
Once you have completed the steps described in the previous sections for the Megabit Modem
410F and 420F, you are ready to power up each modem.
1
Plug the Megabit Modem 410F and 420F power supplies into the facility power and ensure
the Power LED is lit solid green.
2
3
Allow the modems approximately 30 to 60 seconds to synchronize.
After both modems are powered up, verify the following LED indications on each modem:
•
•
ADSL SYNC LED is solid green when the Megabit Modem 410F synchronizes with
the Megabit Modem 420F (the LED flashes green when synchronization is lost
between the two modems)
•
ADSL MAR LED is solid green if the margin is at or above the configured Margin
Threshold (see page 53)
If conditions other than those listed above exist, check the cabling. See “Installing Cabling” on
page 14 for instructions.
The illustration and table on page 17 describe LED indications for all operational modes.
LEDs on the modem front panel provide continual status at-a-glance for network and
modem connections.
16
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Chapter 3: Installing the Megabit Modem 410F and 420F
MEGABITMODEM 410F
ADSL
LAN
PWR
LINK
TX
RX
COL
SYNC
TX
RX
MAR
Status LEDs
LED
State
Description
Modem has power.
PWR
On green
Off
Modem does not have power.
LAN
LINK
On green
A PC, hub, or other network device is connected to the modem
10/100BASE-T interface.
Off
No device is connected to the modem 10/100BASE-T interface.
Modem is transmitting data to devices on the LAN.
Modem is not transmitting data to the LAN.
Modem is receiving data from devices on the LAN.
Modem is not receiving data from the LAN.
Collision detected on the 10/100BASE-T link.
No collision detected.
TX
Flashing green
Off
RX
Flashing green
Off
COL
Flashing green
Off
ADSL
SYNC
On green
Flashing green
Off
ADSL transceiver is synchronized and in normal operation mode.
ADSL transceiver is in a start-up sequence.
ADSL modem transceiver is not detecting a transceiver at the far end.
Modem is transmitting data to the other modem.
TX
Flashing green
Off
Modem is not transmitting data to the other modem.
Modem is receiving data from the other modem.
RX
Flashing green
Off
Modem is not receiving data from the other modem.
ADSL margin is at or above the configured Margin Threshold (see page 53).
ADSL margin is below the configured Margin Threshold.
MAR
On green
Off
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17
Connecting the PC to the RS-232 Port
CONNECTING THE PC TO THE RS-232 PORT
Connecting the PC to the RS-232 port is an optional procedure. However, if you use the
recommended configuration for the modem, you will initially set up parameters using this
interface.
1
Connect the modem to a PC as shown below.
Network device
Megabit Modem 410F or 420F
RS-232 MGMT port
MDI
M
DI-X
10BASE-T
RS23
M
GMT
A
D
S
L
P
O
W
E
R
2
Configure these communication settings (if using terminal emulation, select ANSI):
•
•
•
•
•
9600 baud
no parity
8 data bits
stop bit
flow control off
18
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Chapter 3: Installing the Megabit Modem 410F and 420F
The following table shows connector pin assignments for the 8-pin RS-232 port connector.
Pin
Signal
Signal Direction
1
Not Used
-
2
3
4
5
6
7
8
Receive Data (RD)
Transmit Data (TD)
Modem to terminal
Terminal to modem
Data Terminal Ready (DTR) Terminal to modem
DGND
-
Data Set Ready (DSR)
Not Used
Modem to terminal
-
-
Not Used
3
Display the Megabit Modem Setup Menu.
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19
Connecting the PC to the RS-232 Port
20
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SETTING UP
FOR CONFIGURATION
4
pages, or SNMP (Simple Network Management Protocol). Through SNMP and the Web pages,
can configure the modem through a reduced set of parameters. The following is the
recommended way to set up the modem:
•
Determine the IP addresses and subnet masks for LAN and WAN ports, as applicable
(page 22).
•
Initially, use the RS232-management port (page 24) to:
–
–
–
configure IP addresses and subnet masks for the LAN and WAN ports (both ports have
a default IP address and subnet mask)
enable DHCP if you want the modem to serve IP addresses to devices on the LAN (the
default for DHCP is disabled)
set up parameters for bridging and routing
•
Then, configure other parameters, such as system configuration, and manage the modem
through either the Web pages or SNMP. You will configure ADSL parameters by accessing
the Megabit Modem 410 only.
When you configure and manage the Megabit Modem 410 and 420 through the Web pages,
set up a PC and a Web browser using the set up procedures provided in this chapter. Then,
learn how you can access and navigate the Megabit Modem 410F and 420F Web pages.
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21
Determining IP Addresses for the Subnet
DETERMINING IP ADDRESSES FOR THE SUBNET
If you have not already done so, you need to determine the IP addresses and subnet masks for
the Megabit Modem 410F and 420F and each device on their LANs. This will enable you to
configure and manage the modems from the 10/100BASE-T LAN port or ADSL (WAN) port,
as well as transmit information to and receive information from devices throughout the system.
How to set the IP addresses and subnet masks for the Megabit Modem 410F and 420F and
the devices on their LANs depends upon whether you configure the system for bridging,
routing, or bridging and routing mode.
Managing Modems in Bridging Mode
The following is a sample configuration for setting the IP addresses and subnet masks for
managing modems when bridging mode only is enabled. Note that in bridging mode, the
410F LAN and 420F LAN must be on the same IP subnet. When you connect to a modem either
locally or remotely, use the modem 10/100BASE-T LAN port IP address.
The IP addresses in the figure below are for example only. Acquire your own
IP addresses from your network administrator or service provider.
192.168.0.5
255.255.255.0
192.168.0.10
255.255.255.0
420F
Modem
410F
Modem
192.168.0.6
255.255.255.0
ADSL
192.168.0.11
255.255.255.0
192.168.0.4
255.255.255.0
192.168.0.1
255.255.255.0
192.168.0.9
255.255.255.0
Same IP Subnet
22
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Chapter 4: Setting Up for Configuration
Managing Modems in Routing or Bridging/Routing Mode
The following is a sample configuration for setting the IP addresses and subnet masks when
only routing mode or both routing mode and bridging mode are enabled. Note that there must
be three IP subnets: 410F LAN, 420F LAN, and the 410F to 420F ADSL (WAN). When you
connect to a modem either locally or remotely, use either the modem 10/100BASE-T LAN port
or ADSL (WAN) port IP address, respectively.
The IP addresses in the figure below are for example only. Acquire your own
IP addresses from your network administrator or service provider.
192.168.20.5
255.255.255.0
192.168.0.10
255.255.255.0
420F
Modem
410F
Modem
192.168.20.6
255.255.255.0
ADSL
192.168.0.11
255.255.255.0
192.168.0.4
255.255.255.0
192.168.10.2
255.255.255.0
192.168.20.1
255.255.255.0
192.168.0.9
255.255.255.0
255.255.255.0
410F LAN IP Subnet
420F LAN IP Subnet
WAN IP Subnet
The default IP address for the 10/100BASE-T LAN port is 192.168.0.1 and the IP subnet mask
is 255.255.255.0. If you want to view or change the default IP address for the modem, see
“Using the RS-232 management Port for Set Up” on page 24 for instructions.
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Using the RS-232 management Port for Set Up
USING THE RS-232 MANAGEMENT PORT FOR SET UP
You can configure some parameter for the Megabit Modem 410F and 420F modems through
the RS-232 port that is connected to a PC. You can use the Megabit Modem Setup Menu to do
the following:
•
•
•
manually change the LAN and WAN IP address and network mask
enable Dynamic Host Configuration Protocol (DHCP)
configure modem parameters (these are a subset of the parameters that can be configured
using the Megabit Modem 410F and 420F Web pages)
Pairgain Megabit Modem 410F Setup Menu
========================================================
BSP version:
SW version:
2.2
2.8
========================================================
(1)Enter LAN IP address:
(2)Enter LAN IP network mask:
(3)Toggle Bridging:
192.168.0.1
255.255.255.0
Enabled
(4)Toggle Routing:
Disabled
(5)Toggle LAN DHCP:
Disabled
(6)Toggle Spanning Tree:
(7)Enter WAN IP address:
(8)Enter WAN IP network mask:
(9)Toggle LAN RIP:
Enabled
Enabled
Enabled
0.0.0.0
0.0.0.0
(10)Toggle WAN RIP:
(11)Enter default gateway IP address:
(12)Enter IP Admin address:
(13)Set Factory Defaults
(14)Reset modem
>
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Chapter 4: Setting Up for Configuration
Basic information about the modem automatically displays when you access the Setup Menu.
The Megabit Modem model (410F or 420F) that you are managing or configuring. You are
using either the Megabit Modem 410F Setup Menu or the Megabit Modem 420F Setup
Menu.
The BSP version on your modem. The version shown on page 24 is for example only.
The SW (software) version on your modem. The version shown on page 24 is for
example only.
Enter any of the parameters at the prompt. For more information about the LAN and WAN
parameters—options (1) through (11)—see “Configuring the LAN and WAN” on page 48.
:
(1)
(2)
Type 1 then enter the LAN IP address for the modem Ethernet 10/100BASE-T
LAN port. The default IP address for the LAN port is 192.168.0.1.
Type 2 then enter the LAN IP network mask (subnet IP mask) for the modem
Ethernet 10/100BASE-T LAN port. The default IP subnet mask is
255.255.255.0.
(3)
(4)
(5)
Type 3 then enter y to toggle the bridging setting. Select bridging enabled to
forward Ethernet data based on MAC addresses.
Type 4 then enter y to toggle the routing setting. Select routing enabled to
forward IP datagrams based on IP addresses.
only when routing is enabled. When routing is not enabled, LAN DHCP is
disabled.
Select LAN DHCP enabled so that the modem will act as a DHCP server,
automatically assigning IP addresses to devices on the LAN. If you select
DHCP, ensure that all devices on the LAN have the TCP/IP stack set to obtain an
IP address automatically (see “Setting Up the PC to Access the Modem
Web Pages” on page 27).
(6)
(7)
Type 6 then enter y to toggle Spanning Tree. Select Spanning Tree enabled to
implement Spanning tree when bridging is enabled.
Type 7 then enter the WAN IP address for the ADSL (WAN) port. This option
is available only if routing is enabled. When routing is not enabled, the field is
blank.
(8)
Type 8 then enter the WAN IP network mask (subnet IP mask) for the ADSL
(WAN) port. This option is available only if routing is enabled. When routing is
not enabled, the field is blank.
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Using the RS-232 management Port for Set Up
(9)
Type 9 then enter y to toggle LAN RIP to select the direction you want RIP
(Routing Information Protocol) activated in routing mode. Select enabled to
activate both RIP directions (incoming and outgoing) in routing mode. Select
disabled to not activate RIP.
(10) Type 1 0 then enter y to toggle WAN RIP to select the direction you want RIP
(Routing Information Protocol) activated in routing mode. Select enabled to
activate both RIP directions (incoming and outgoing) in routing mode. Select
disabled to not activate RIP.
other LAN segments or IP addresses not in its routing table.
(12) Type 1 2 then enter the IP address (which is the address of the router to which
the modem may forward packets) for a device on the LAN or WAN that will
manage the modem. To allow any device on the LAN or WAN to manage
the modem, enter 0.0.0.0. For more information, see “Configuring the
Admin IP Address” on page 46.
(13) Type 1 3 then enter y to return the parameters to the factory default values.
This returns all parameters to the default values, not only the subset of
parameters that you can configure using the Megabit Modem Setup Menu. For
more information, see “Resetting the Modem to Factory Defaults” on page 39.
When you type 13 then enter y to return to factory default values, the modem
automatically resets.
(14) Type 1 4 then enter y to reset the modem after you change the WAN and LAN
IP address and the IP network mask. You must reset the modem to effect these
changes.
26
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Chapter 4: Setting Up for Configuration
SETTING UP THE PC TO ACCESS THE MODEM
WEB PAGES
must set up your PC for access. You can set up in one of two ways:
•
when DHCP is disabled (default) for the modem, enter a static IP address for your PC that
is on a subnet that can access the modem LAN port, as described on page 27
•
when DHCP is enabled for the modem, the PC and other devices on the LAN automatically
Setting Up a Static IP Address for the PC
When DHCP is disabled on the modem, set the TCP/IP configuration for the PC to
Specify an IP address. Then, enter an IP address for the PC NIC card that is on a subnet that can
access the modem (see “Determining IP Addresses for the Subnet” on page 22).
See the example on page 28 for setting up the PC to obtain an address when using Microsoft
Windows® 95. If you use an operating system other than Windows 95, refer to the appropriate
operating system user documentation.
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Setting Up the PC to Access the Modem Web Pages
1
2
Open the Control Panel window and double-click on the Network icon
shown at right.
In the Network dialog (shown on page 28), double-click TCP/IP under
the Configuration tab (or highlight TCP/IP then click Properties).
3
4
5
On the IP Address tab, select Specify an IP address.
Enter an IP address and subnet mask for the PC, then click OK.
Restart the PC to effect the new settings.
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Obtaining a Dynamic IP Address for the PC
When DHCP is enabled, the modem can provide an IP address dynamically to devices on the
LAN. If you enabled DHCP when you set up the modem in “Using the RS-232 management
Port for Set Up” on page 24, ensure that the TCP/IP configuration for your PC and other devices
on the LAN is set to automatically obtain the IP address from the modem.
See the example below for setting up the PC to obtain an address when using Microsoft
Windows® 95. If you use an application other than Windows 95, refer to the appropriate
operating system user documentation.
1
Open the Control Panel window and double-click on the Network icon
shown at right.
2
In the Network dialog (shown below), double-click TCP/IP under the
Configuration tab (or highlight TCP/IP then click Properties).
3
4
On the IP Address tab, select Obtain an IP address automatically, then click OK.
Restart the PC to effect the new settings.
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Setting Up a Web Browser to Access the Modem Web Pages
SETTING UP A WEB BROWSER TO ACCESS THE
MODEM WEB PAGES
To access the Megabit Modem 410F or 420F Web pages through a Web browser (see page 6 for
Web browser versions supported), the Web browser must have these settings:
•
•
Proxies disabled (see this page for Netscape or page 31 for Internet Explorer)
frequency to automatically update the Web page with current information selected
(see page 32 for Netscape or page 33 for Internet Explorer)
Disable Proxies
Disable the Proxies for Netscape:
1
2
3
4
Open the Web browser.
Select Edit, Preferences, Proxies.
Select Direct connection to the Internet.
Click OK.
.
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Chapter 4: Setting Up for Configuration
Disable the Proxies for Internet Explorer:
1
2
3
4
5
Open the Web browser.
Select View, Internet Options, and then Connection tab.
Select Connect to the Internet using a local area network.
Ensure Access the Internet using a proxy server is not selected.
Click OK.
.
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Setting Up a Web Browser to Access the Modem Web Pages
Set the Web Page Update Frequency
Set the Netscape Web page for update frequency:
1
2
3
4
Open the Web browser.
Select Edit, Preferences, and then Cache.
Select Every time under Document in cache is compared to document on network:.
Click OK.
.
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Chapter 4: Setting Up for Configuration
Set the Internet Explorer Web page for update frequency:
1
2
3
4
5
Open a Web browser.
Select View, Internet Options.
Select the General tab, and select Settings under Temporary Internet files.
Select Every visit to the page under Check for newer versions of stored pages:.
Click OK.
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Accessing the Modem Web Pages
ACCESSING THE MODEM WEB PAGES
Type http://192.168.0.1 in the Location Bar field of the Web browser (as shown below), then press
a private address specified for use by RFC 1918. If you changed the LAN IP address through
the RS-232 management port (page 24), enter the new IP address in the Location Bar instead of
192.168.0.1.
If the Megabit Modem 410F and 420F have routing or bridging/routing mode enabled, you
can also access the Web pages through the WAN IP address of the modem. You can set up the
WAN IP address through the RS-232 management port (page 24). Enter the WAN IP address
in the Location Bar.
http://192.168.0.1
Location Bar
The Megabit Modem 410F and 420F Web pages display with two primary frames:
•
Frame A contains the navigation menus. Use the menus to select the configuration or
management page you want to view in Frame B.
•
Frame B displays the configuration or management page associated with the menu item you
selected from the navigation menu in Frame A.
Frame A
Frame B
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Chapter 4: Setting Up for Configuration
VIEWING MODEL AND SOFTWARE VERSIONS
The modem model, BSP version, and software version automatically display when you access
the Megabit Modem 410F or 420F Web pages, or when you select Main to return to the
Main Menu from the other menus.
‹
Œ
Displays the Megabit Modem Model (410F or 420F) that you are managing or configuring.
‹
Displays the BPS Version on your modem. The version shown in the figure above is for
Œ
example only.
Displays the Software Version on your modem. The version shown in the figure above is for
example only.
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Saving the Configuration and Effecting Changes
SAVING THE CONFIGURATION AND
EFFECTING CHANGES
As you make changes to the modem configuration, click the Submit button on the Web page to
changes are not permanent until you write them to NVRAM and will not take affect until the
modem is reset:
•
for both LAN and WAN:
–
–
IP address and IP net mask (subnet IP mask) (page 49)
RIP version (see page 50)
•
when DHCP is enabled (page 50):
–
–
–
DHCP start IP address (which the modem automatically sets)
primary DNS IP address
secondary DNS IP address
See the following sections to:
•
•
•
save configuration changes to NVRAM on page 37
reset the modem to activate the configuration on page 38
reset the modem to restore the factory default values on page 39
changes are automatically written to NVRAM. You must reset the ADSL link to effect these
changes.
See the following sections to:
•
•
reset the ADSL link to activate the ADSL configuration on page 54
reset the modem to restore the factory default values on page 39
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Saving the Configuration to NVRAM
After clicking Submit to write configuration parameters to RAM, update your configuration by
writing the parameters to NVRAM. See page 36 for a list of changes you must save to NVRAM
and reset the modem to effect.
1
2
3
Click System on the Main Menu to access the System Menu.
Click Update Configuration on the System Menu.
Do one of the following:
•
•
Click Proceed to save to NVRAM.
Click Cancel. The configuration parameters are not written to NVRAM.
4
Reset the modem to effect the configuration using the procedure on page 38.
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Saving the Configuration and Effecting Changes
Resetting the Modem
Selecting System Menu, Reset Unit causes all active connections to drop.
After you make changes to the modem configuration and write the changes to NVRAM
(page 37), you must reset the modem. See page 36 for a list of changes you must reset to effect.
1
2
3
Click System on the Main Menu to access the System Menu.
Click Reset Unit on the System Menu.
Do one of the following:
•
•
Click Proceed to reset the modem.
Click Cancel. The modem is not reset.
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Chapter 4: Setting Up for Configuration
RESETTING THE MODEM TO FACTORY DEFAULTS
You can return Megabit Modem 410F and 420F parameters to the factory default values. This
provides a known starting point if you are troubleshooting the system or simply want to
reconfigure parameters. The factory default values are listed on page 40.
1
2
Click System on the Main Menu to access the System Menu.
Click Factory Default on the System Menu.
When you click Proceed to return to factory default values, the modem
automatically resets.
3
Do one of the following:
•
•
Click Proceed to return to factory default values and reset the modem.
Click Cancel. The parameters to not reset to the factory default values.
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Resetting the Modem to Factory Defaults
Parameter
Default Value
Parameter
System Setup
Default Value
System Mode
Bridge/Router RFC1483 Admin IP Address
SNMP Configuration
0.0.0.0
TFTP Server Parameters
TFTP Server IP Address
TFTP Server Net Mask
192.168.0.2
Enable Trap Sending
Trap Server IP Address
Trap Server Net Mask
Trap Community String
Get Community String
Set Community String
disabled
0.0.0.0
255.255.255.0
Path on the TFTP Server blank field
255.255.255.0
public
Download File Name
Set Time and Date
Date (mm/dd/yy)
tiger.bin
public
01/01/96
private
Time (hh/mm/ss)
hh/mm/ss
Brouter LAN-WAN Configuration
Bridging Configuration
Bridging
Routing Configuration
Routing
enabled
enabled
disabled
Spanning Tree
Port Configuration – LAN
IP Address
Port Configuration – WAN
IP Address
192.168.0.1
255.255.255.0
100
0.0.0.0
0.0.0.0
101
IP Net Mask
IP Net Mask
Bridge Port Priority
RIP Direction
Bridge Port Priority
RIP Direction
Both
Both
RIP Version
Rip Version 1
RIP Version
Rip Version 1
Default Gateway Address 0.0.0.0
Default Gateway Mask
DHCP Configuration
DHCP
255.255.255.0
Static Route Entry
IP Address
Net Mask
disabled
0.0.0.0
0.0.0.0
0.0.0.0
Start IP Address
Primary DNS
192.168.0.2
0.0.0.0
Gateway
Secondary DNS
Gateway
0.0.0.0
192.168.0.1
ADSL (DMT) Configuration
Startup Option
Adaptive at Startup
4
Margin Threshold
3
Startup SNR Margin
Downstream
Upstream
Max Data Rate (kbps)
Min Data Rate (kbps)
7552
64
Max Data Rate (kbps)
Min Data Rate (kbps)
Interleave Option (msec)
928
64
Interleave Option (msec) 04
04
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CONFIGURING
SYSTEM SETTINGS
5
configure system parameters. Set the:
•
TFTP server IP address and network mask for performing software upgrades on page 42,
when required
•
•
•
SNMP parameters on page 43
system time and date on page 45
system admin IP address on page 46
Unless specified otherwise, configuration parameters shown in this section are for
example only.
After you set up system parameters, go to Chapter 6, “Configuring the Ports” on page 47 to
configure the LAN-WAN and ADSL parameters.
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Defining TFTP Parameters
DEFINING TFTP PARAMETERS
A TFTP server is a device on the LAN or WAN from which you can download software updates
to your modem. See page 73 for more information on a TFTP server. Also, see page 63 for
procedures on how to update the software on your modem.
1
2
3
Click System from the Main Menu.
Click TFTP Parameters on the System Menu.
Do the following:
Enter the TFTP server IP address for the device that will be the TFTP server.
‹
Enter the TFTP server net mask (IP subnet mask) for the TFTP server.
Œ
Enter the Path on the TFTP server where the download files reside. You can enter a
path with a maximum of 20 characters. Alternatively, the field can be left blank and
the path can be specified at the TFTP server.
Enter the Download File Name. This is the name of the file that contains the download
Ž
software updates. The default is tiger.bin.
4
Click Submit to accept the changes.
‹
Œ
Ž
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Chapter 5: Configuring System Settings
DEFINING SNMP PARAMETERS
The modem has an SNMP agent that allows it to be managed remotely by a Network
Management System (NMS). See page 72 for more information about managing the modem
through SNMP.
1
2
3
Click System from the Main Menu.
Click SNMP Parameters on the System Menu.
Do the following:
Select Enable Trap Sending if you want the modem to send traps to a server.
‹
Enter the Trap Server IP Address for the server to which the traps will be sent.
Œ
Enter the Trap Server Net Mask (subnet mask) for the server to which the traps will
be sent.
‹
Œ
Ž
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Defining SNMP Parameters
You can change the community string to a name you choose. The fields have
default names as shown in the screen on page 43 and are case sensitive. If you
change the name, however, the community string name must match on both
the manager and agent to allow access to the SNMP function.
Public is the default Trap Community String which is an authentication string
for the trap receiver. You can change the name, using up to 19 characters.
Ž
Public is the default Get Community String which is an authentication string
that enables an NMS to get status from the modem agent. You can change
the name, using up to 19 characters.
Private is the default Set Community String which is an authentication string
for an NMS to set or change parameters on the modem agent. You can
change the name, using up to 19 characters.
4
Click Submit to accept the changes.
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Chapter 5: Configuring System Settings
SETTING THE TIME AND DATE
Set the time and date for the modem.
1
2
3
Click System from the Main Menu.
Click Set Date & Time on the System Menu.
Do the following:
Enter the date in the format mm/dd/yy (for example, 03/10/00 is
March 10, 2000).
‹
Œ
Enter the time in the format hh:mm:ss (for example, 07:21:55 is 21 minutes
and 55 seconds past 7 a.m.).
4
Click Submit to accept the changes.
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Configuring the Admin IP Address
CONFIGURING THE ADMIN IP ADDRESS
The IP address you enter in the Admin IP Address field determines which devices on the network
can manage the Megabit Modem 410F or 420F. You can select:
•
•
limited access where only one device on the network can manage the modem
general access where any device on the network can manage the modem
Do the following to configure administration for your modem:
1
2
3
Click System from the Main Menu.
Click Security Admin on the System Menu.
Select one of the following and enter the appropriate IP address:
•
When you allow only one device on the network to manage the modem, enter the
IP address for that one device in the IP address field.
•
When you allow any device on the network to manage the modem, enter 0.0.0.0 in the
IP address field.
4
Click Submit to accept the address you entered.
pace 01
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CONFIGURING THE PORTS
6
LAN-WAN Configuration page. You can configure both the Megabit Modem 410F and 420F as a
bridge to forward Ethernet data based on MAC addresses, as a router to route
modem routes all IP datagrams and bridges everything else. Be sure to configure the same
settings for both modems. For more information about these options, see “Bridging and
Routing” on page 69.
Configure the ADSL connection between the Megabit Modem 410F and 420F using the CO End
connection, see “ADSL” on page 67 and “Rate Adaptive Transmission” on page 68.
Do the following to configure the Megabit Modem 410F and 420F:
•
over the WAN, and set up the LAN side of the configuration, including DHCP. If DHCP is
enabled, the modem will serve IP addresses to devices on the LAN (page 48) when routing
is enabled.
•
•
Configure ADSL service between the Megabit Modem 410F and 420F (page 52).
Save the configuration and effect your changes (page 36).
Although you have submitted your configuration changes:
•
some LAN-WAN parameter changes are not permanent until you write them
to NVRAM and do not take effect until you reset the modem
•
ADSL parameter changes do not take effect until you reset the ADSL link
See “Saving the Configuration and Effecting Changes” on page 36 for
additional information.
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Configuring the LAN and WAN
CONFIGURING THE LAN AND WAN
Configure the LAN and WAN parameters.
1
Click LAN-WAN Configuration on the Main Menu to access the Brouter LAN-WAN Configuration
page.
‹
Œ
Ž
‘
’
“
”
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Chapter 6: Configuring the Ports
2
Enter the bridging configuration parameters:
Select Bridging Enable to forward Ethernet data based on MAC addresses.
‹
The Spanning Tree protocol eliminates loops in a bridged LAN topology. When
Spanning Tree is selected, it becomes active when bridging is enabled. If the
“Spanning Tree Protocol” on page 69 for more information.
3
Enter the routing configuration parameters:
Select Routing Enable to forward IP datagrams based on IP addresses. See “Routing”
Œ
on page 71 for more information.
Click Static Route Table to get a dialog to set up static routes. The modem can accept
up to 32 static route entries. Go to “Defining Static Route Entries” on page 51 to
configure these parameters.
4
Enter the LAN and WAN port configuration parameters:
Enter the LAN IP Address for the modem Ethernet 10/100BASE-T LAN port. The
default IP address for the LAN port is 192.168.0.1.
Enter the WAN IP Address for the ADSL (WAN) port. This option is available only if
routing is enabled and you must enter a valid IP address. When routing is not
enabled, the field is blank.
Enter the LAN IP Net Mask (subnet IP mask) for the modem Ethernet 10/100BASE-T
Ž
LAN port. The default IP subnet mask is 255.255.255.0.
Enter the WAN IP Net Mask (subnet IP mask) for the ADSL (WAN) port. This option
is available only if routing is enabled and you must enter a valid subnet mask. When
routing is not enabled, the field is blank.
The LAN Bridge Port Priority is preset to 100. Bridge Port Priority is used when Bridging
mode and Spanning Tree are both enabled and determines which modem port has
higher priority when active simultaneously.
The WAN Bridge Port Priority is preset to 101. Bridge Port Priority is used when
Bridging mode and Spanning Tree are both enabled and determines which modem port
has higher priority when active simultaneously.
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Configuring the LAN and WAN
For the LAN and WAN RIP Direction, select the direction you want RIP (Routing
Information Protocol) activated in Routing mode. See “Routing” on page 71 for more
information on RIP.
‘
For the LAN and WAN RIP Version, select the version of RIP used for intergateway
transmissions in Routing mode. See “Routing” on page 71 for more information
on RIP.
Enter the LAN Default Gateway Address (IP address) for the modem to access other
LAN segments or IP addresses not in its routing table.
’
“
Enter the LAN Default Gateway Mask (subnet IP mask) for the modem to access other
LAN segments or IP addresses not in its routing table.
5
Enter the DHCP configuration parameters:
DHCP can be enabled only when routing is enabled. If you select DHCP Enable
when routing is not enabled, the modem deselects DHCP Enable when you
click Submit. If you disable routing, the modem deselects DHCP Enable when
you click Submit.
:
Select DHCP Enable to enable the modem to act as a DHCP server to automatically
”
assign IP addresses to devices on the LAN. If you select DHCP, ensure that all
devices on the LAN have the TCP/IP stack set to obtain an IP address automatically
(see “Setting Up the PC to Access the Modem Web Pages” on page 27).
The modem automatically enters the Start IP Address for the first device on the LAN
as one address higher than the Ethernet port on the modem with DHCP enabled.
You cannot edit this field.
Enter an IP address for a device that will provide Primary DNS. DNS translates
human-readable machine names into IP addresses.
Enter an IP address for a device that will provide Secondary DNS. DNS translates
human-readable machine names into IP addresses (optional).
Ethernet 10/100BASE-T port of the modem. You can edit this field.
6
7
Click Submit to accept the Brouter LAN-WAN configuration.
Some parameter changes are not permanent until you write them to NVRAM and do not
take effect until you reset the modem. See “Saving the Configuration and
Effecting Changes” on page 36.
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Chapter 6: Configuring the Ports
Defining Static Route Entries
You can enter up to 32 static routing IP addresses that the modem recognizes in the routing
address tables, in addition to the routing IP addresses that the modem learns. (See “Routing” on
page 71 for more information on defining static route entries.)
192.168.30.0
255.255.255.0
‹
Œ
192.168.10.2
1
Enter static routes.
Enter the Destination IP address and net mask destination.
Enter the Gateway IP address to the next hop.
‹
Œ
All static route entries are listed in this table after you enter the parameters in
fields ‹ and Œ.
2
3
Click Add to accept this entry.
To delete a Static Route Entry:
a
Click the entry in the list shown in field above to select it. The entry displays in the
Static Route Entry fields ‹ and Œ.
b
Click Delete to remove the entry.
4
Click Done when you complete all configuration additions and deletions.
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Configuring ADSL Service
CONFIGURING ADSL SERVICE
You configure the ADSL transceiver service for both the Megabit Modem 410F
and 420F from the Megabit Modem 410F (ATU-C) only using the CO End ADSL
(DMT) Configuration page. From the Megabit Modem 420F (ATU-R), you view
the ADSL configuration parameters from the read-only Remote End ADSL
(DMT) Configuration page.
You must reset the ADSL link to effect ADSL configuration changes (see
“Resetting the ADSL Link” on page 54).
Enter or view the ADSL configuration parameters. Configure items Ž through ‘ for both
downstream and upstream. Downstream transmission is from the 410F to the 420F; upstream is
from the 420F to the 410F.
1
Click ADSL on the Main Menu, then click ADSL Configuration on the ADSL Menu to access the
ADSL (DMT) Configuration page.
‹
Œ
Ž
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Chapter 6: Configuring the Ports
2
Configure the ADSL startup parameters.
The Startup Option determines how an ADSL transmission rate is established when
‹
the modem is reset. The following table describes the available options.
Startup Option
Description
Adaptive at Startup
(default)
The modems attempt to come up at the downstream and upstream
Max Data Rate (kbps) with a margin greater than or equal to the
Startup SNR Margin. If the data rates cannot be obtained, the
modems attempt lower data rates that are greater than or equal to
the downstream and upstream Min Data Rate (kbps) until sync
occurs. If the modems do not achieve the rates, they will not sync.
Fixed
The modems attempt to come up only at the downstream and
upstream Max Data Rate (kbps) values with a margin greater than
or equal to the Startup SNR Margin. If the data rates cannot be
obtained, the modems continue to attempt the data rates. If the
modems do not achieve the rates, they will not sync.
Enter the Startup SNR Margin. The value can be any number between 0 and 15 dB.
The default is 4.
Œ
Startup SNR (Signal to Noise Ratio) margin is the margin the modem must achieve
to come up.
3
Configure the SNR margin threshold.
Enter the Margin Threshold. The value can be any number between 0 and 15 dB. The
default is 3.
The margin threshold determines the SNR margin value below which the ADSL
MAR LED on the modem front panel turns off.
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Configuring ADSL Service
4
Configure the ADSL downstream and upstream parameters.
Enter the Max Data Rate (kbps). The values entered should be in 32 kbps increments.
If a non-32 kbps value is entered, the value is automatically rounded up to the
nearest 32 kbps value. This is the maximum data rate attainable by the modems, and
the data rate at which the modems sync will be equal to or less than this value as per
the Startup Option parameter.
Ž
The downstream Max Data Rate (kbps) range is 64 kbps to 7552 kbps, in 32 kbps
increments. The default is 7552.
The upstream Max Data Rate (kbps) range is 64 kbps to 928 kbps, in 32 kbps
increments. The default is 928.
Enter the Min Data Rate (kbps). This is the minimum data rate available for the
modems, and the data rate at which the modems sync will be equal to or greater than
this value as per the Startup Option parameter.
The downstream Min Data Rate (kbps) range is 64 kbps to 7552 kbps, in 32 kbps
increments. The default is 64.
The upstream Min Data Rate (kbps) range is 64 kbps to 928 kbps, in 32 kbps
increments. The default is 64.
Select the Interleave Option (msec). For downstream and upstream, the options are 02,
04, 08, and 16 msec. The default is 04.
through the system.
5
6
Click Submit when you complete all the ADSL configuration settings.
After you make changes to the ADSL configuration, effect the configuration completing
the procedures for “Resetting the ADSL Link” on this page.
Resetting the ADSL Link
Selecting ADSL Menu, Reset Link brings down the ADSL link between the
Megabit Modem 410F and 420F.
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Chapter 6: Configuring the Ports
To effect ADSL configuration changes, you must reset the ADSL link between the Megabit
Modem 410F and 420F.
Selecting System Menu, Reset Unit resets the modem and ADSL link (see
page 38).
1
2
Click ADSL on the Main Menu to access the ADSL Menu.
Click Reset Link on the ADSL Menu.
3
Do one of the following:
•
•
Click Proceed to reset the ADSL link.
Click a different ADSL Menu option to cancel. The ADSL link is not reset.
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Configuring ADSL Service
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7
You can view status for the ADSL link (“Viewing ADSL Status” on this page) and for WAN
and LAN statistics (“Viewing Network Statistics” on page 59).
VIEWING ADSL STATUS
The Megabit Modem 410F and 420F display the status of the ADSL link. From the Main Menu,
select ADSL to display the ADSL Menu and ADSL Statistics page (see page 57).
.
‹
Œ
Ž
‘
’
“
”
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Viewing ADSL Status
View the following ADSL statistics: Items through “ have downstream and upstream
values.
System time and date and total hours since power on occurred.
‹
Œ
ADSL link is synchronized between the Megabit Modem 410F and 420F, or the link
has no connection.
Any alarm conditions, such as Loss Of Sync (LOS), Loss Of Frame (LOF), Loss Of
Margin (LOM), or Loss of Cell Delineation (LCD), since power on occurred or the
statistics were last cleared.
The SNR margin at which the modem is currently operating.
Ž
Minimum SNR value recorded since power on occurred or the statistics were last
cleared.
Total number of seconds that the ADSL link had errors in a 24-hour span, or since
power on occurred or the statistics were last cleared (if less than 24 hours).
‘
Total amount of time that the lines were not available for transmission since power
on occurred or the modem statistics were last cleared (total unavailable seconds).
Line attenuation in decibels.
’
“
”
Data rates at which the modem is connected.
Select Clear to reset all statistics.
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Chapter 7: Viewing Statistics
VIEWING NETWORK STATISTICS
The Megabit Modem 410F and 420F display status for the LAN and WAN links. From the
Main Menu, select Statistics to display the Statistics Menu.
LAN Statistics
The Megabit Modem 410F and 420F display status for the LAN. Click LAN Statistics from the
Statistics Menu.
‹
Œ
Ž
‘
’
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Viewing Network Statistics
View the following LAN information:
System time and date and total hours since power on occurred.
IP and Ethernet addresses for the modem LAN port.
‹
Œ
Total number of IP packets processed and the number of packets with incorrect
checksums since power on occurred or the statistics were last cleared.
Number of errored packets detected at this port and the number of packets
forwarded since power on occurred or the statistics were last cleared.
Ž
Number of packets reassembled at this port and the number of transmissions where
a route was not found in router table since power on occurred or the statistics were
last cleared.
Total number packets received and transmitted since power on occurred or the
statistics were last cleared.
Collisions is not supported.
‘
’
Selecting Clear resets all statistics.
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Chapter 7: Viewing Statistics
WAN Statistics
The Megabit Modem 410F and 420F display status for the WAN. Click WAN Statistics from the
Statistics Menu.
‹
Œ
View the following WAN information:
System time and date and total hours since power on occurred.
‹
Port statistics, including the number of packets received and transmitted on the
Œ
connection and the number of errored packets since power on occurred or statistics
were last cleared.
Select Clear to reset statistics.
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Viewing Network Statistics
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MAINTENANCE AND
TROUBLESHOOTING
8
This section provides the following maintenance and troubleshooting procedures:
•
•
To update modem software, see this page.
For troubleshooting procedures, see page 65.
When you need to download software upgrades to your system, use the Megabit Modem 410F
and 420F Web pages (page 34). You download the new software from a device on your LAN
or WAN that is your TFTP server. When you configured system parameters (Chapter 5,
“Defining TFTP Parameters” on page 42), you set up the IP address for the TFTP server and a
directory path to the software. Ensure that the binary file is available to download from the
TFTP server.
1
2
3
Click System on the Main Menu to access the System Menu.
Click Upgrade Software on the System Menu.
Do one of the following:
•
•
Click Cancel. The software upgrade does not occur.
Click TFTP to display the TFTP server parameters (see “Defining TFTP Parameters”
on page 42). Ensure that they are properly specified. Click Back to return to Upgrade
Software.
.
Before initiating a software upgrade, ensure that the path and file name for the
modem software are properly specified.
•
If you specified a directory on the TFTP server when you configured system
parameters, ensure that the file is in that directory.
•
If you left the field blank and specified the path at the TFTP server, ensure
that the path points to the directory that contains the file.
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Updating Software
4
If you clicked TFTP in Step 3, do one of the following:
•
•
•
Click Proceed. The modem software upgrade begins.
Click Cancel. The software upgrade does not occur.
Click TFTP Parameters to modify the TFTP configuration.
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Chapter 8: Maintenance and Troubleshooting
TROUBLESHOOTING
If this occurs:
Try this:
PC or hub not
communicating
with the modem
•
•
•
Check the LAN LINK LED. If it is off, check the cabling to the 10/100BASE port and to
the hub or the NIC card in the PC to ensure it is secure.
Check the position of the MDI/MDI-X switch. Set the switch to MDI when connecting to
a PC. Set the switch to MDI-X when connecting to a hub or router.
or newer.
•
•
Check that you have a TCP/IP protocol stack installed on your PC.
If this is the initial installation, check that you set the IP address on your PC to obtain an
IP address automatically. Make sure you have configured the LAN IP address of the
modem to an address that is on the correct subnet. See “Setting Up a Static IP Address
for the PC” on page 27.
•
Check the NIC card installation for correct IRQ, drivers, and adapter setup. See the
appropriate documentation for the NIC card.
ADSL SYNC LED When the LED remains off, it indicates that the modem is not detecting the other modem.
Verify that the modem is connected at the far end.
Flashing green indicates that the modem is attempting to bring up the link. Solid green
indicates that the loop is up.
The modem synchronizes at a minimum transmission rate of 64 kbps. The modem rate
adapts in increments of 32 kbps.
ADSL MARGIN
LED off
When the LED is off, it indicates that the margin is below the margin threshold configured
on the 410F (see the Margin Threshold parameter on page 53).
LAN TX and RX
LEDs are not on
Check that the LAN LINK LED is on. If it is on, you are simply not transmitting or receiving
data on the LAN 10/100BASE-T port. If, however, the LAN LINK LED is not on, check the
section “PC or hub not communicating with the modem” in this table.
ADSL TX and RX Check that the ADSL SYNC LED is on. If it is on, you are simply not transmitting or receiving
LEDs are not on
data on the ADSL (WAN) port. If, however, the ADSL SYNC LED is not on, your modem has
lost the link with the other modem.
If none of the above corrects your problem, contact ADC Technical Assistance (see page 81).
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Troubleshooting
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TECHNICAL REFERENCE
9
This chapter provides technical information about features of the Megabit Modem 410F
and 420F.
ADSL
The DMT ADSL technology provides the high-speed transmission between the Megabit
Modem 410F and 420F. This transmission occurs over a single-pair telephone line.
Asymmetric Digital Subscriber Line (ADSL) is the technology used to transmit data between
the Megabit Modem 410F and 420F at the physical layer. It provides data at asymmetric rates
so that downstream traffic from the 410F to the 420F is faster than upstream traffic from the
420F to the 410F. The downstream transmission rate is up to 7.552 Mbps, while the upstream
rate is up to 928 kbps.
Discrete Multitone (DMT) is the line coding used for ADSL. Basically, it divides the
bandwidth into subchannels. Some subchannels are allocated to upstream and downstream
traffic.
DMT ADSL provides rate-adaptive transmission that allows the best transmission rate
determined by distance and line conditions.
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Rate Adaptive Transmission
RATE ADAPTIVE TRANSMISSION
The following definitions are useful for understanding the operation of the Megabit Modem:
•
Bit Error Rate (BER) is the ratio of received bits that are in error relative to the total number
of bits received, measured over time. For example, 10-7 BER means that on average one
error occurs per 107 bits received.
•
•
Signal to Noise Ratio (SNR) is the ratio (typically expressed in dB) of the received signal
power to the received noise power. It is a measure of the quality of the transmission.
Margin (SNR margin) is the amount of degradation in SNR that the system can tolerate
under the current conditions and still achieve 10-7 BER. A margin of 6 dB, for example,
means that the SNR can degrade by 6 dB and still provide a performance of 10-7 BER. The
Megabit Modem 410F and 420F have a margin configuration option that defaults to 3 dB,
but can be set anywhere between 0 to 15 dB.
•
Reach is the longest loop length that the system can support with a given margin.
Rate Adaptation
With ADC's rate adaptive technology, the Megabit Modem 410F and 420F can automatically
startup or adjust to the fastest speed possible, given the transmission distance and line
conditions. Or, you can set the modem to a specific rate. For details, see the Startup Option
parameter on page 53. For information about setting the maximum and minimum data rates for
upstream and downstream transmission, see the Max Data Rate (kbps) and Min Data Rate (kbps)
parameters on page 54.
Reach, Data Rate, SNR Margin, and Noise Environment
The maximum transmission rate of the Megabit Modem 410F and 420F is determined by
distance, SNR margin, and the condition of the line (wire gauge, condition noise environment).
The figure on page 78 shows the relationship between reach and data rate for a given set of
conditions. The plots can be used to determine the achievable reach at a given data rate, or they
may be used to determine the achievable data rates at a given distance. In all cases except the
no noise case, a margin of 4 dB was allocated above the SNR that provides a 10-7 BER.
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Chapter 9: Technical Reference
BRIDGING AND ROUTING
Bridging
You can configure the Megabit Modem 410F and 420F as a bridge to forward Ethernet data
based on MAC addresses.
MAC Layer Bridging
A bridge moves information across an internetwork from a source to a destination at the link
layer (of an OSI reference model). The information is sent to a physical address known as a
Media Access Control (MAC) address. The Megabit Modem 410F and 420F provide
transparent Ethernet MAC-layer bridging. The bridge learns up to 1024 addresses.
Spanning Tree Protocol
The Megabit Modem 410F and 420F support the 802.1d Spanning Tree protocol, which
eliminates loops in a LAN topology by partitioning out redundant links between LAN segments.
This ensures that there is only one path, or link, between any two nodes on the network. If this
link goes down, Spanning Tree re-enables partitioned links to create a new loop-free topology
if possible.
An example of the active topology is shown on page 70. In this example, the spanning tree
algorithm partitions out the bridge from LAN A to LAN B and the link from ENET2 to
Bridge 5.
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Bridging and Routing
Example LAN Physical Network
This physical configuration is valid only when used with
Spanning Tree to eliminate loops.
LAN
Bridge 1
ENET 1
Bridge 2
Bridge 3
LAN
E
N
E
T
Bridge 4
Bridge 5
ENET 3
2
Loop-free Topology
Using SpanningTree Protocol
LAN A
Bridge 3
Bridge 1
ENET 1
Bridge 2
LAN B
E
N
E
T
Bridge 4
Bridge 5
ENET 3
2
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Chapter 9: Technical Reference
Routing
You can configure the Megabit Modem 410F and 420F router to route Ethernet-encapsulated
IP datagrams based on IP addresses. Use Routing Information Protocol (RIP) to automatically
identify the route from the connection on the transmitting modem to the receiving modem. You
tables automatically (for example, information on how many hops between destinations) with
the RIP Version and RIP Direction parameters (see page 50). The version of RIP you select for the
connection must match the version on the receiving modem. Versions RIP 1 and
RIP 1 compatible use broadcast. Version RIP 2 uses multicast.
The router also learns addresses. In addition to the addresses it learns, you can add 32 static
route entries using the Static Route Entry page (see page 51). Through the static IP routing feature,
you can configure the modem as an IP router with statically programmed route entries. You can
enable this function to provide broadcast filtering and to prevent eavesdropping by specifying
multiple destination gateways. When static IP routing is enabled, you can access only specific
remote IP subnets or hosts.
Since IP routers make forward or filter decisions based on the network-layer IP address instead
of the MAC hardware address, MAC-level broadcast frames are prevented from reaching
unwanted destinations in the network.
DHCP
The Megabit Modem 410F and 420F support Dynamic Host Configuration Protocol (DHCP).
If you enable DHCP, the modem acts as a DHCP server and automatically assigns IP addresses
to devices on the LAN. Ensure that the TCP/IP properties are set on the PC operating system
(such as Microsoft Windows 95) to automatically obtain the IP address from the modem.
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Management Protocols
MANAGEMENT PROTOCOLS
Simple Network Management Protocol (SNMP) is used to configure system and bridge
parameters, to monitor statistics, and to perform advanced management tasks.
SNMP
This management protocol specifies how to send information between a Network Management
System (NMS) and managed devices on a network. Managed devices run a program called an
agent. The agent interprets SNMP requests and responds to them. The NMS communicates with
the agents in the managed devices to:
•
•
•
set configuration
get configuration
get status
A Management Information Base (MIB) defines the configuration and status parameters.
The Internet Engineering Task Force (IETF) specifies standard MIBs for certain types of
devices, ensuring any NMS can manage them. Additionally, vendors can issue proprietary
MIBs for their devices to fit specific needs.
Each managed device has configuration, status, and statistical information that defines its
functionality and operational capabilities. These elements make up the MIB for the device being
managed. The MIB defines the kind of information an NMS can retrieve from a managed
device, and the settings an NMS can control in a managed device. See “MIBs and Traps” on
page 77 for a listing of the MIBs and traps that the Megabit Modem 410F and 420F support.
DNS RESOLUTION
If you want Domain Name System (DNS) resolution, you need to specify the IP address for a
device to be the DNS resolver. You can also specify another IP address to designate a second
device for a secondary DNS resolver. The DNS device maps human-readable addresses to
IP addresses. A human-readable address is one such as maggie.copro.company.com
that contains a host name and domain. The DNS resolver maps that name to the IP address that
is a numeric (four octet) value such as 192.168.30.25 (see page 50 for the example on how to
configure a DNS address).
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Chapter 9: Technical Reference
TFTP SERVER
Trivial File Transfer Protocol (TFTP) is the TCP/IP standard for file transfer. It provides
the service with minimal capability and minimal overhead. TFTP uses UDP for
connectionless delivery.
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TFTP Server
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SPECIFICATIONS AND DATA
A
WAN INTERFACE SPECIFICATIONS
The following are the specifications for the ADSL (Asymmetric Digital Subscriber Line):
Maximum transmission rate:
Downstream
Upstream
7.552 Mbps
928 kbps
Minimum transmission rate to sync 64 kbps
Data rate configuration
Rate-adaptive data rate resolution
Signal format
Full rate, rate adaptive (default configuration)
32-kbps increments
DMT (Discrete Multitone) line code
RJ-11
Connector
LAN INTERFACE SPECIFICATIONS
Protocol
Ethernet with 10/100BASE-T autosensing (IEEE 802.3 for 10BASE-T)
RJ-45
Connector
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Physical Specifications
PHYSICAL SPECIFICATIONS
Height
Width
Depth
Weight
1.2 inches (3.1 cm)
6.9 inches (17.5 cm)
9.2 inches (23.4 cm)
2.2 lbs (1.0 kg)
POWER SUPPLY
Voltage
100 to 240 Vac
50 to 60 Hz
0.3 Amps
Frequency
Current
ENVIRONMENTAL
Temperature
32 to 122 °F (0 to 50 °C)
Relative Humidity up to 95% non-condensing
Altitude
between -200 and 13,000 feet (-61 to 3.962 meters)
COMPLIANCE
Emissions and Immunity
Compliances
•
•
•
•
•
•
FCC Part 15, Subpart B, Class B
CE (EN 55022 and EN 50082-1)
cUL
Operations and Safety
Compliances
UL-1950
CE (EN 300 386-01)
ICE 950
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Appendix A: Specifications and Data
PROTOCOLS
•
ANSI/IEEE Std 802.1D Information Technology – Telecommunications and information exchange
between systems – Local area networks – Media access control (MAC) bridges
•
•
•
•
•
•
•
•
•
•
•
RFC 768 User Datagram Protocol
RFC 791 Internet Protocol
RFC 792 Internet Control Message Protocol
RFC 826 Ethernet Address Resolution Protocol
RFC 1058 Routing Information Protocol (RIP-I)
RFC 1157 Simple Network Managing Protocol (SNMP)
RFC 1350 The TFTP Protocol (revision 2)
RFC 1483 Multiprotocol Encapsulation over ATM Adaption Layer 5
RFC 1723 Routing Information Protocol Version 2 (RIP-II) – Carrying Additional Information
RFC 2131 Dynamic Host Configuration Protocol (DHCP)
RFC 2132 DHCP Options and BOOTP Vendor Extensions
MIBS AND TRAPS
•
•
•
•
•
•
•
•
RFC 1213 Management Information Base for Network Management of TCP/IP-based Internets: MIB-II
RFC 1215 Convention for defining traps for use with the SNMP
RFC 1493 Definitions of Managed Objects for Bridges
RFC 1695 Definitions of Managed Objects for ATM Management Version 8.0 using SMIv2
RFC 1724 RIP Version 2 MIB Extensions
RFC 2662 Definitions of managed objects for ADSL lines (Also DSL Forum TR-006)
PairGain Agent MIB
PairGain Tiger MIB
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Rate vs. Reach
RATE VS. REACH
Payload Rate vs Reach on 24 AWG (0.4 mm) with 4dB Margin in Low Noise Environment
10.000
1.000
0.100
0.010
Reach in Kilofeet
Downstream
Upstream
Payload Rate vs Reach on 26 AWG (0.5 mm) with 4dB Margin in Low Noise Environment
10.000
1.000
0.100
0.010
Reach in Kilofeet
Downstream
Upstream
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Appendix A: Specifications and Data
HARDWARE
the installation kit and modem connectors pinouts.
Installation Kit
The following items are included in the installation kit and are used to install each Megabit
Modem 410F and 420F as shown in Chapter 3 on page 11.
Part
Description
Function
Rubber feet
Grey cable
Four black rubber feet
Attach to the base of the modem.
Silver-satin phone cord with 4-pin modular Connects the modem ADSL connector to the
plugs (straight-through)
wall phone jack for access to the Internet.
Black cable
CAT 5, cable with 8-pin modular plugs
(straight-through)
Connects the modem 10/100BASE-T connector
to the LAN through a hub or to a PC NIC.
Power cable Power supply with optional power cord (this Connects the modem POWER connector to the
item is ordered dependent on the type of
power supply and cord required for your
location)
local power source.
Screws
Two 6x1/2-inch sheet metal screws
Installs into a wall for wall-mounting modems.
Grey cable
Flat cable with RJ-45 connectors and a DB-9 Connects the RS-232 management port to an
and adapter to RJ-45 adapter.
ASCII terminal or a PC running terminal
emulation software. Adapter assembly connects
to a DB-9 connector on the PC. Then, one RJ-45
connector installs in the adapter and the other
connector into the console port on the modem.
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Hardware
Connector Pinouts
You may choose to make your own cables for the ADSL RJ-11 connector and the
the pinout information you need.
ADSL Port
The following table shows the signal on each pin for the ADSL port. The connector for this
interface is an RJ-11. See page 14 for the location of this port.
Pin
Signal
1
2
3
4
5
6
Not used
Not used
Ring
Tip
Not used
Not used
10/100BASE-T Port
The following table shows the signal on each pin when the switch is in either the MDI or the
MDI-X position for the 10/100BASE-T port. The connector for this interface is an RJ-45. See
page 14 for the location of this port.
MDI
MDI-X Signal
Description
1
2
3
4
5
6
7
8
3
6
1
4
5
2
7
8
TX+
Transmit Data (+)
Transmit Data (-)
Receive Data (+)
Not used
TX-
RD+
Not used
Not used
RD-
Not used
Receive Data (-)
Not used
Not used
Not used
Not used
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TECHNICAL ASSISTANCE
AND WARRANTY
B
This chapter describes how to contact ADC for technical support and warranty service.
TECHNICAL SUPPORT
Technical support is available 24 hours a day, 7 days a week by contacting the ADC Wireline
Systems Division Customer Service Engineering Group at one of the following numbers:
•
Telephone: 800.638.0031
714.730.3222
•
•
Fax:
714.832.9924
Email
A Customer Service Engineer answers technical assistance calls Monday through Friday
between 7:30 AM and 5:30 PM, Pacific Time, excluding holidays. At all other times, an on-duty
Customer Service Engineer returns technical assistance calls within 30 minutes.
WORLD WIDE WEB
Avidia product information can be found at http://www. pairgain.com using any web browser.
To download product manuals from the Customer Site portion of the web page, you need to
provide a customer password. If you do not have a password, contact your sales representative.
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Limited Warranty
LIMITED WARRANTY
ADC DSL Systems, Incorporated (“ADC”) warrants that, for a period of twelve (12) months
from the date of shipment, the hardware portion of its products will be free of material defects
and faulty workmanship under normal use. ADC's obligation, under this warranty, is limited to
replacing or repairing, at ADC's option, any such hardware product which is returned during the
12-month warranty period per ADC's instructions and which product is confirmed by ADC not
to comply with the foregoing warranty.
ADC warrants that, for a period of 90 days from the date of purchase, the software furnished
with its products will operate substantially in accordance with the ADC published specifications
and documentation for such software. ADC’s entire liability for software that does not comply
with the foregoing warranty and is reported to ADC during the 90-day warranty period is, at
ADC’s option, either (a) return of the price paid or (b) repair or replace of the software. ADC
also warrants that, for a period of thirty (30) days from the date of purchase, the media on which
software is stored will be free from material defects under normal use. ADC will replace
defective media at no charge if it is returned to ADC during the 30-day warranty period along
with proof of the date of shipment.
The transportation charges for shipment of returned products to ADC will be prepaid by the
Buyer. ADC will pay transportation charges for shipment of replacement products to Buyer,
unless no trouble is found (NTF), in which case the Buyer will pay transportation charges.
ADC may use reconditioned parts for such repair or replacement. This warranty does not apply
to any product which has been repaired, worked upon, or altered by persons not authorized by
ADC or in ADC's sole judgment has been subjected to misuse, accident, fire or other casualty,
or operation beyond its design range.
Repaired products have a 90-day warranty, or until the end of the original warranty
period—whichever period is greater.
ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT
TO ITS PRODUCTS AND ANY ACCOMPANYING WRITTEN MATERIALS. FURTHER,
ADC DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM BUGS OR
THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE, OR THE
RESULTS OF THE USE, OF THE SOFTWARE IN TERMS OF CORRECTNESS,
ACCURACY, RELIABILITY OR OTHERWISE.
82
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Appendix B: Technical Assistance and Warranty
ADVANCE REPLACEMENT
Any product determined by ADC not to comply with the applicable warranty within 30 calendar
days from the date of shipment to the Buyer, or as otherwise authorized, are eligible for advance
replacement free of charge. A replacement product will be shipped to the Buyer within 24 hours
of ADC's receipt of notification from the Buyer.
If products returned to ADC for advance replacement are not received by ADC within 30
calendar days of shipment of the replacement product or if no trouble is found (NTF) as
determined by ADC, the Buyer will be responsible for payment of the cost of the replacement
product.
BILLING
ADC’s repair of products returned for repair, replacement, or credit, whether in warranty or out
of warranty, which is found to be damaged due to customer negligence or which has had parts
removed will be billed on a time and material basis.
In the event that the returned equipment is not covered by warranty, ADC will contact the
customer with the estimated repair or replacement charges and obtain customer disposition of
the product if a purchase order has not been provided.
Equipment returned for repair or replacement is subject to a $70 per unit NTF (no trouble found)
charge in the event that diagnostic evaluation reveals no evidence of functional failure or
physical defects.
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Returning a Product
RETURNING A PRODUCT
To return equipment to ADC Wireline Systems Division:
1
Locate the number of the purchase order under which the equipment was purchased. You
will need to provide this number to ADC Wireline Systems Division Customer Service to
obtain a return authorization.
2
Call or write ADC Wireline Systems Division Customer Service to ask for a Return
Material Authorization (RMA) number and any additional instructions. Use the telephone
number, fax number, or email address listed below:
•
•
•
Telephone: 800.370.9670
Fax: 714.832.9923
3
Include the following information, in writing, along with the equipment you are returning:
•
•
•
Company name, address, telephone number, and the name of a person Customer
Service can contact regarding this equipment.
The purchase order number provided to Customer Service when the RMA number was
requested.
A description of the equipment, as well as the number of units that you are returning.
Be sure to include the model and part number of each unit.
•
•
The shipping address to which Customer Service should return the repaired equipment.
The reason for the return:
–
–
The equipment needs an ECO/ECN upgrade.
The equipment is defective.
If the equipment is defective, please tell us what you observed just before the
equipment malfunctioned. Be as detailed in your description as possible.
–
If there is another reason for returning the equipment, please let us know so we
can determine how best to help you.
4
Pack the equipment in a shipping carton.
84
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Appendix B: Technical Assistance and Warranty
5
Write the ADC Wireline Systems Division address and the Return Material Authorization
Number you received from Customer Service clearly on the outside of the carton and return
to:
ADC Wireline Systems Division
14352 Franklin Ave.
Tustin, CA 92780-7013
Attention: RMA (Number)
All shipments are to be returned prepaid. ADC will not accept any collect
shipments.
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Returning a Product
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GLOSSARY
C
This glossary defines terminology from the perspective of the Megabit Modem 410F and 420F.
10/100BASE-T
ADSL
The Institute of Electrical and Electronic Engineers (IEEE) 802.3 specification for
Ethernet over thin coaxial cable.
Asymmetric Digital Subscriber Line is a technology in which data is transferred from
the Megabit Modem 410F to the 420F at up to 7.552 Mbps, and transferred from the
420F to the 410F at up to 928 Kbps. ADSL is the implementation of the physical layer
for transmission of data.
attenuation
BER
The dissipation of the power of a transmitted signal as it travels over copper wire,
measured in decibels (dB).
Bit Error Rate is a measure of transmission quality. The ratio of error bits to the total
number of bits transmitted.
bps
bit-per-second is the number of bits transferred during each second of data
transmission.
CBR
Constant Bit Rate is a Service Class for the modem. It provides constant bit rate data
with a timing relationship between the source and the destination. Also, a traffic class
that carries a guaranteed constant bandwidth. Best suited for applications that require
fixed bandwidth, such as uncompressed voice, video and circuit emulation. CBR is a
Quality of Service class defined by the ATM Forum for ATM networks.
cell
A fixed-length packet. Also, the unit of data transmission used in ATM. Each ATM cell
contains a fixed-size frame (53 bytes) consisting of a five-byte header and a 48-byte
payload.
community
string
A text string required for an SNMP trap to be received by a trap receiver(s). Also, a
text string that identifies an SNMP community and is associated with specific access
rights (read-only or read/write).
CRC
Cyclic Redundancy Check is a method used to verify the accuracy of data
transmission.
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Appendix C: Glossary
DMT
Discrete Multi-Tone is a modulation coding for an ADSL line. DMT is the modulation
technology used for the Megabit Modem 410F and 420F ADSL.
downstream
traffic
Communications from the Megabit Modem 410F to the 420F.
encapsulation
The inclusion of data in a protocol header prior to transmission, which enables
successful data transmission between different protocol networks.
ES
Errored Seconds is the seconds during which errors occur that prevent the payload
from being corrected.
Ethernet
A protocol used for LAN traffic, which has a transfer rate of 10 or 100 Mbps.
Non-volatile memory that can be erased and reprogrammed.
flash memory
gateway
A device (generally a router) that provides translation services to allow
communication between two dissimilar networks.
IP
Internet Protocol is a TCP/IP protocol that controls packet transmission.
IP address
A 32-bit address used in IP routing. The address consists of four octets separated by
decimals. The octets comprise a network section, a subnet section (optional) and a
host section.
LAN
LLC
Local Area Network is a physically connected group of devices between which data
transmission occurs at high speeds over relatively short distances.
Logical Link Control is an encapsulation protocol for data that you transmit from the
modem over the WAN in RFC 1483 Bridging/Routing mode.
LOF
LOS
MAC
Loss Of Frame is an error indicating that the receiving equipment has lost a frame.
Loss Of Signal is an error indicating that the receiving equipment has lost the signal.
Media Access Control is a physical address associated with a device such as a NIC.
For modem configuration, the MAC is used to map inbound traffic (from a remote
IP address) to an internal (LAN) IP address. Used with RFC 1483 Bridging/Routing
mode.
margin
MIB
The noise margin in decibels that the modem must achieve with a BER of 10 -7 or
better to successfully complete initialization.
Management Information Base is a set of variables that define the configuration and
status parameters for network management. Network management stations can
retrieve information from and write information to an MIB. The Internet Engineering
Task Force (IETF) specifies standard MIBS for certain types of devices, ensuring any
NMS can manage the devices. Vendors can specify proprietary MIBs for their devices
to fit specific needs.
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Appendix C: Glossary
NVRAM
Non-Volatile Random Access Memory is a medium for storing system configuration
information, so the information is not lost when the system is reset.
octet
PDU
A TCP/IP term indicating eight bits.
Protocol Data Unit is data as it appears at the interface between a particular sublayer
and the sublayer immediately below.
QoS
RFC
RIP
Quality of Service is the configured traffic parameters that are assigned to a virtual
circuit, which specifies how quickly and how accurately data is transferred from the
sender to the receiver.
Request For Comment is a series of notes that contain surveys, measurements, ideas,
techniques, and observations, as well as proposed and accepted TCP/IP protocol
standards. RFCs are available on the Internet.
Routing Information Protocol allows routers to update the routing tables
automatically (for example, with information such as how many hops between
destinations). The version of RIP you select for the connection must match the
version supported by the service provider. Versions RIP1 and RIP-1 compatible use
for broadcast. Version RIP 2 uses multicast.
SEF
Severely Errored Frames is the incoming signal has at least four consecutive errored
framing patterns.
SES
Severely Errored Seconds is the seconds during which more than 2,500 bipolar errors
are detected on the line.
SNMP
Simple Network Management Protocol is a protocol that specifies how to send
information between a NMS and managed devices on a network. The managed
devices run a program called an agent. The agent interprets SNMP request and
responds to them. SNMP is used to set device configurations, read device
configurations, or read the device status.
Spanning Tree
subnet mask
TCP
A bridging protocol that detects and prevents loops from occurring in a system
containing multiple bridges.
A type of IP address that allows a site to use a single IP address for multiple physical
networks.
Transmission Control Protocol is a transport protocol used to map inbound traffic
(from a remote IP address) to an internal (LAN) IP address. Establishes connection
with remote user before data transmission.
TCP/IP
Transmission Control Protocol/Internet Protocol is a protocol used for
communications between computers over networks and the Internet.
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Appendix C: Glossary
TFTP
Trivial File Transfer Protocol is a protocol used to download card images or other files
from an external TFTP server to the NVRAM of any installed cards, or to upload files
from an installed card to an external TFTP server.
trap receivers
traps
PCs configured to receive SNMP traps (messages).
Autonomous, interrupt-driven, SNMP messages sent from a managed node to a
network management station to indicate that an event has occurred.
UAS
UBR
UnAvailable Seconds is the number of seconds during which the line is unavailable.
Unspecified Bit Rate is an ATM traffic type used for LAN traffic. When network
congestion occurs, the data is stored in a buffer until it can be sent.
UDP
User Datagram Protocol is a transport protocol used to map inbound traffic (from a
remote IP address) to an internal (LAN) IP address. Uses a protocol port number for
the destination at the remote location.
upstream traffic
VCMUX
Communications from the Megabit Modem 420F to the 410F.
Virtual Channel Multiplexer-based encapsulation used for networks with large
numbers of virtual channels making it practical to carry a single protocol per virtual
channel.
VC
Virtual Channel is a logical connection in the ATM network over which ATM cells are
transmitted.
WAN
Wide Area Network is a network consisting of nodes located across a large
geographical area. Also, the connection between the Megabit Modem 410F and 420F.
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Numerics
10/100BASE-T
B
C
connector pinouts 80
back panel 13, 14
description 87
410F and 420F Web pages
accessing 34
bridge/router 47, 69
configuring 30
installation 14
requirements 11
compliance 76
introduction 1
saving 36
A
accessing 410F and 420F Web pages 34
ADSL
configuring 52
connector pinouts 80
description 67, 87
DMT 67
through RS-232 MGMT port 24
Web browser 1
reset link 55
configuration choices 9
specifications 75
viewing status 57, 58
ADSL link, reset 54
ADSL menu
410F and 420F Web pages 30
ADSL 52
DHCP 50
configuration 52
reset link 55
PC 27
statistics 57
ports 47
asymmetric digital subscriber line
See ADSL
system settings 41
through the RS-232 MGMT port 24
WAN 48
attaching modem feet 12
Web browser 30
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connecting
cables 14
DMT description 67, 88
DNS resolution 72
modem feet 12
connector pinouts 15, 80
description 88
dynamic host configuration protocol
D
defining
SNMP parameters 43
static route table entries 51
TFTP parameters 42
time and date 45
deleting static route table entries 51
descriptions
E
entering static route table entries 51
F
factory default values 39
10/100BASE-T 87
ADSL 67, 87
applications 3
autodetecting 10/100BASE-T Ethernet port 2
DHCP 2
bridge/router 69
DHCP 71
downstream transmission rate 2
LEDs 2
DMT 67, 88
downstream 88
MAC 88
modem 2
overview 2
modem 1
SNMP agent 2
power cable 9
technology 2
rate adaptive transmission 68
subnet mask 89
TFTP 90
TFTP 2
transmission speeds 2
upstream transmission rate 2
Web-based interface 2
flat-surface mounting 7
upstream 90
DHCP
configuring 50
description 71
setting up the PC 24
DMT ADSL 67
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Megabit Modem Configuration and Management
I
installation
cable types 11
Megabit Modem Setup Menu 24
MIB and trap support 72
introduction 1
kit 79
requirements 5
installing the modem 11
attaching feet 12
cabling 14
adaption rate 65
applications 3
attaching feet 12
description 1
flat-surface mounting 7
setting MDI/MDI-X switch 13
wall mounting 8
features 2
flat-surface mounting 7
installation 11
IP routing 71
obtaining IP Address automatically 27
overview 1
L
LAN
resetting 38
configuring 48
resetting to factory default values 39
setting MDI/MDI-X switch 13
storage 6
interface specifications 75
viewing statistics 59
layer bridging 69
unpacking 5
limited warranty 82
wall mounting 8
modem feet, connecting 12
mounting
M
MAC
clearances 7, 8
description 88
layer bridging 69
main menu
flat-surface 7
wall 8
ADSL 57
information 34
statistics 59
MDI/MDI-X switch 13
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reset
N
P
network statistics 59
ADSL link 54
modem 38
panel, back 13, 14
parameters
route table 51
SNMP 43
deleting table entries 51
entering table entries 51
table entries 51
TFTP 42
PC, configuring 27
pinouts 15, 80
ports, configuring 47
power cable 9
power cords 9
power supplies 9
product overview 1
protocols
routing, static IP 71
RS-232 MGMT port 24
S
saving a configuration 36
simple network management protocol
See SNMP
bridge/router 69
SNMP 72
site requirements 6
spanning tree 69
parameters, defining 43
protocol 72
R
software upgrading 63
ADSL 75
rate adaptive transmission description 68
rate vs. reach 78
requirements
cables 11
environmental 76
LAN interface 75
physical 76
installation 5
power cable 9
site 6
power 76
WAN interface 75
system 6
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static
IP routing 71
route table entries 51
deleting 51
T
technical specifications 75
technical support 81
TFTP
entering 51
statistics 57
ADSL 57
description 90
parameters, defining 42
LAN 59
WAN 61
server 73
time and date 45
transmission rate
statistics menu
LAN statistics 59
WAN statistics 61
storage 6
downstream 67
rate adaptive 68
upstream 67
subnet mask description 89
MIB and trap 72
See TFTP
system
configuring settings 41
requirements 6
U
unpacking modem 5
update configuration 37
upgrading software 63
troubleshooting 65
system menu
factory default 39
reset unit 38
description 90
security administration 46
set date & time 45
SNMP parameters 43
TFTP parameters 42
update configuration 37
upgrade software 63
V
viewing
ADSL status 57, 58
LAN statistics 59
model and software versions 35
network statistics 59
WAN statistics 61
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W
wall mounting 8
WAN
configuring 48
interface specifications 75
viewing statistics 61
warranty 81
Web browser configuration 30
www.adc.com 81
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ADC DSL Systems, Inc.
Corporate Office
14402 Franklin Avenue
Tustin, CA 92780
Tel: 714.832.9922
Fax: 714.832.9924
For Technical Assistance:
800.638.0031
714.730.3222
´+R%¶5/¨
1150055 Rev A
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