Patton electronic Switch IM2RC I 100B User Manual

USER

MANUAL

MODEL IM2RC/I-100B

Ethernet Bridge Module

Part# 07MIM2RC-I100B-UM

Rev. A

Revised 11/26/10

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

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1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model IM2RC/I-100B components to be

free from defects, and will—at our option—repair or replace the product

should it fail within one year from the first date of the shipment.

This warranty is limited to defects in workmanship or materials, and does

not cover customer damage, abuse or unauthorized modification. If this

product fails or does not performs as warranted, your sole recourse shall

be repair or replacement as described above. Under no condition shall

Patton Electronics be liable for any damages incurred by the use of this

product. These damages include, but are not limited to, the following: lost

profits, lost savings and incidental or consequential damages arising

from the use of or inability to use this product. Patton Electronics spe-

cifically disclaims all other warranties, expressed or implied, and the

installation or use of this product shall be deemed an acceptance of

these terms by the user.

1.1 SERVICE

All warranty and non-warranty repairs must be returned freight prepaid

and insured to Patton Electronics. All returns must have a Return Materi-

als Authorization number on the outside of the shipping container. This

number may be obtained from Patton Electronics Technical Services at:

• Tel: +1 (301) 975-1007

• Email: [email protected]

• URL: http://www.patton.com

Note Packages received without an RMA number will not be

accepted.

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1.2 SAFETY WHEN WORKING WITH ELECTRICITY

• Do not open the device when the power cord is con-

nected. For systems without a power switch and

without an external power adapter, line voltages

are present within the device when the power cord

is connected.

• For devices with an external power adapter, the

power adapter shall be a listed Limited Power

Source The mains outlet that is utilized to power

the device shall be within 10 feet (3 meters) of the

device, shall be easily accessible, and protected

by a circuit breaker in compliance with local regu-

latory requirements.

• For AC powered devices, ensure that the power

cable used meets all applicable standards for the

country in which it is to be installed.

• For AC powered devices which have 3 conductor

power plugs (L1, L2 & GND or Hot, Neutral &

Safety/Protective Ground), the wall outlet (or

socket) must have an earth ground.

WARNING

• For DC powered devices, ensure that the intercon-

necting cables are rated for proper voltage, cur-

rent, anticipated temperature, flammability, and

mechanical serviceability.

• WAN, LAN & PSTN ports (connections) may have

hazardous voltages present regardless of whether

the device is powered ON or OFF. PSTN relates to

interfaces such as telephone lines, FXS, FXO, DSL,

xDSL, T1, E1, ISDN, Voice, etc. These are known

as “hazardous network voltages” and to avoid

electric shock use caution when working near these

ports. When disconnecting cables for these ports,

detach the far end connection first.

• Do not work on the device or connect or disconnect

cables during periods of lightning activity.

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This device contains no user serviceable parts. This device can

only be repaired by qualified service personnel.

WARNING

CAUTION

This device is NOT intended nor approved for connection to the

PSTN. It is intended only for connection to customer premise

equipment.

Electrostatic Discharge (ESD) can damage equipment and impair

electrical circuitry. It occurs when electronic printed circuit cards

are improperly handled and can result in complete or intermittent

failures. Do the following to prevent ESD:

• Always follow ESD prevention procedures when removing and

replacing cards.

• Wear an ESD-preventive wrist strap, ensuring that it makes

good skin contact. Connect the clip to an unpainted surface of

the chassis frame to safely channel unwanted ESD voltages

to ground.

• To properly guard against ESD damage and shocks, the wrist

strap and cord must operate effectively. If no wrist strap is

available, ground yourself by touching the metal part of the

chassis.

In accordance with the requirements of council direc-

tive 2002/96/EC on Waste of Electrical and Electronic

Equipment (WEEE), ensure that at end-of-life you sepa-

rate this product from other waste and scrap and deliver

to the WEEE collection system in your country for recy-

cling.

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2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product. This

product has been thoroughly inspected and tested and is warranted for

One Year parts and labor. If any questions arise during installation or use

of this product, please contact Patton Electronics Technical Support at:

(301) 975-1007.

2.1 FEATURES

• Installs in Patton’s NetLink Rack Systems

• Provides MAC level connection between two peered Ethernet LANs

• RJ-45 line connection

• Operates transparently to higher level protocols such as TCP/IP,

DECnet, NETBIOS and IPX

• PPP (RFC 1661) with Bridging Control Protocol (RFC 1638)

• No configuration necessary

• Automatically discovers, loads and deletes MAC addresses

• Modular 10/100Base-T connection (RJ-45)

• Two LED indicators: status & link integrity

2.2 DESCRIPTION

The Patton IM2RC/I-100B, Ethernet Bridge Module installs in the NetLink

Rack system to provide seamless Ethernet LAN extension. The Patton

IM2RC/I-100B performs the bridging function between two physically

separate Ethernet LANs at the MAC level. Operation of the Patton

IM2RC/I-100B is transparent to higher network level protocols such as

TCP/IP, DECnet, NETBIOS and IPX. The Model IM2RC/I-100B is 802.3

compliant and supports PPP (RFC 1661) with Bridging Control Protocol

(RFC 1638).

Once installed in the local Patton NetLink rack, the Patton IM2RC/I-100B

works in a “plug and play” manner to forward LAN broadcasts, multicasts

and frames destined for the peered Ethernet LAN at the remote end (the

Patton base unit at the remote end must be equipped with an IM1/I mod-

ule). Using the Patton IM2RC/I-100B in conjuction with a G.SHDSL front

card (3088RC) or NTU (2701RC), peered Ethernet LANs can be linked

over leased 2-wire or E1 circuits. The NTU features externally-accessible

DIP switches, loopback diagnostics, SNMP/HTTP remote-management

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capabilities using RocketLink Plug ‘n’ Play, as well as in-band manage-

ment.

2.3 TYPICAL APPLICATION

The Model IM2RC/I-100B is designed to plug directly into the rear of a

Patton Electronics rack card modem (i.e. Model 3088RC or 2701RC).

The Model IM2RC/I-100B is designed to be used as one of a pair of

units. Figure 1 (below) illustrates a typical Model IM2RC/I-100B installa-

tion.

Corporate

Headquarters

Patton Model 3088

LAN

4.6 Mbps

Leased Line

(Model 3088RC or 2701RC)

Rack-Mounted Ethernet

WAN Bridge Module

Remote/Satellite

Office

LAN

Figure 1. Typical Model IM2RC/I-100B application

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3.0 PPP OPERATIONAL BACKGROUND

PPP is a protocol used for multi-plexed transport over a point-to-point

link. PPP operates on all full duplex media, and is a symmetric peer-to-

peer protocol, which can be broken into three main components: 1. A

standard method to encapsulate datagrams over serial links; 2. A Link

Control Protocol (LCP) to establish, configure, and test the data-link con-

nection; 3. A family of Network Control Protocols (NCPs) to establish and

configure different network layer protocols.

In order to establish communications over a point-to-point link, each end

of the PPP link must first announce its capabilities and agree on the

parameters of the link’s operation. This exchange is facilitated through

LCP Configure-Request packets.

Once the link has been established and optional facilities have been

negotiated, PPP will attempt to establish a network protocol. PPP will

use Network Control Protocol (NCP) to choose and configure one or

more network layer protocols. Once each of the network layer protocols

have been configured, datagrams from the established network layer

protocol can be sent over the link. The link will remain configured for

these communications until explicit LCP or NCP packets close the link

down, or until some external event occurs.

The PPP Bridging Control Protocol (BCP), defined in RFC 1638, config-

ures and enables/disables the bridge protocol on both ends of the point-

to-point link. BCP uses the same packet exchange mechanism as the

Link Control Protocol (LCP). BCP is a Network Control Protocol of PPP,

bridge packets may not be exchanged until PPP has reached the net-

work layer protocol phase.

3.1 APPLICATIONS

In situations where a routed network requires connectivity to a remote

Ethernet network, the interface on router can be configured as a PPP IP

Half Bridge. The serial line to the remote bridge functions as Virtual

Ethernet interface, effectively bridge functions as a Virtual Ethernet inter-

face, effectively extending the routers serial port connection to the

remote network. The bridge device sends bridge packets (BPDU’s) to the

router’s serial interface. The router will receive the layer three address

information and will forward these packets based on its IP address.

Figure 2 on page 9 shows a typical Cisco router with a serial interface

configured as a PPP Half Bridge. The router serial interface uses a

remote device that supports PPP bridging to functions as a node on the

remote Ethernet network. the serial interface on the Cisco will have an IP

address on the same Ethernet subnet as the bridge.

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Figure 2. Cisco router with serial interface, configured as PPP Half Bridge

For example, the customer site is assigned the addresses 192.168.1.1

through 192.168.1.254. The address 192.168.1.1 is also the default

gateway for the remote network. The above settings remove any routing/

forwarding intelligence from the CPE. The associated Cisco configura-

tion will set serial interface (s0) to accommodate half bridging for the

above example.

Authentication is optional under PPP. In a point-to-point leased-line link,

incoming customer facilities are usually fixed in nature, therefore authen-

tication is generally not required. The IM2RC/I-100B does not require

authentication. It also does not respond to authentication requests.

Some networking systems do not define network numbers in packets

sent out over a network. If a packet does not have a specific destination

network number, a router will assume that the packet is set up for the

local segment and will not forward it to any other sub-network. However,

in cases where two devices need to communicate over the wide-area,

bridging can be used to transport non-routable protocols.

Figure 3 illustrates transparent bridging between two routers over a

serial interface (s0). Bridging will occur between the two Ethernet Inter-

faces on Router A (e0 and e1) and the two Ethernet Interfaces on Router

B (e0 and e1).

Figure 3. Transparent bridging between two routers over a serial link.

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4.0 CONFIGURATION

The Model IM2RC/I-100B module plugs into Patton’s 3088RC and

2701RC modems to provide Ethernet LAN extension. The IM2RC/I-

100B has no switches or jumpers and does not need to be configured.

However, factors such as the type of medium, throughput across the link

and clocking mode must be determined by the settings of the baseband

modems. Please refer to your baseband modem (i.e. 3088RC and

2701RC) to make the following settings.

1. Bit Rate: The DTE rate setting of your base unit corresponds to the

throughput of your IM2RC/I-100B bridge module. Use higher speeds

to allow maximum throughput to your extended LAN. Use lower

speeds to limit the access of your extended LAN.

Note The IM2RC/I-100B only supports synchronous speeds.

2. Clocking Mode: Set the clocking modes on the base units so that

one unit is configured for Internal clocking mode and the other unit is

set for Receive Recover clocking mode.

BASE UNIT CLOCK MODES

Unit “A”

Unit “B”

Internal Clock Setting

Receive/Recover Clock Setting

Note Unit “A” and Unit “B” are arbitrarily chosen. It does not mat-

ter which unit is “A”, and which is “B”.

3. When using the IM2RC/I-100B, DISABLE, the “Enable Loop from

DTE” Switch on the front function card (3088RC or 2701RC).

4. All other base unit settings depend upon your application and on the

application medium (twisted pair or coaxial cable).

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4.1 CONNECTING THE INTERFACE DRIVER BOARD

This package contains an interface driver board that allows you to config-

ure your front function card for ethernet operation. Figure 4 shows the

Interface Driver Board connected to a Model 2701RC front function card.

Figure 4. Model IM2RC/I-100B Driver Board mounted on Model 2701RC

Follow the instructions below to connect the interface driver board to the

front function card:

1. With the function card (such as 2701RC, shown above) pulled out of

the NetLink rack or clusterbox chassis, locate the driver board to be

replaced on the top of the base unit front card.

2. Lift the old interface board gently off of the printed circuit board.

3. Position the IM2RC/I-100B driver board on top of the function card’s

pc board with the sockets oriented toward the male pins. Please be

sure the label marked FRONT <– is pointed toward the front of the

function card (toward the LEDs).

4. Push the Interface Driver Board gently onto the socket and re-install

the function card into the rack or cluster system.

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5.0 INSTALLATION

This section describes the NetLink Model 1001R14 rack chassis.

Included are installation instructions for the IM2RC/I-100B rear card, plus

ethernet and line interface connections to the IM2RC/I-100B card.

Please refer to the appropriate function card (i.e. 3088RC) user manual

to configure and install the function card.

5.1 THE MODEL 1001R14 RACK CHASSIS

The Model 1001R14 Rack Chassis (Figure 5) has fourteen short range

modem card slots, plus its own power supply. Measuring only 3.5” high,

the Model 1001R14 is designed to occupy only 2U in a 19” rack. Sturdy

front handles allow the Model 1001R14 to be extracted and transported

conveniently.

Figure 5. Model 1001R14 Rack Chassis with power supply

The Rack Power Supply

The Patton NetLink rack system is designed to allow single or redundant

(dual) power supplies. Using the same mid-plane architecture as the

function/rear cards, the front function card and the power supply slide in

from the front, while the rear card and power entry modules slide in from

the rear. They plug into one another in the middle of the rack. The front

card is then secured by thumb screws and the rear card by conventional

metal screws..

There are no user-serviceable parts in the power supply

section of the Model 1001R14. Voltage setting changes

and fuse replacement should only be performed by

qualified service personnel. Contact Patton Electronics

Technical support at (301) 975-1007 for more informa-

tion.

WARNING

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5.2 INSTALLING THE REAR IM2RC/I-100B CARD AND FRONT

FUNCTION CARD

The Model IM2RC/I-100B is a rear-mountable ethernet interface card

that works with Patton Models 3088RC and 2701RC access products.

The two cards meet inside the rack chassis and plug into each other by

way of mating 50 pin card edge connectors. Use the following steps as a

guideline for installing each Model IM2RC/I-100B and its function card

mate into the rack chassis:

The IM2RC/I-100B card contains sensitive integrated

circuitry. Failure to ground yourself during installation

may result in damage to the IM2RC/I-100B-100B card or

CAUTION

the front function card.

1. Slide the IM2RC/I-100B rear card into the back of the chassis along

the metal rails provided.

2. Secure the IM2RC/I-100B rear card using the metal screws pro-

vided.

3. Slide the front function card into the front of the chassis. It should

meet the IM2RC/I-100B rear card when it is almost all the way into

the chassis.

4. Push the front card gently into the card-edge receptacle of the rear

card. It should “click” into place.

5. Secure the front card using the thumb screws.

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5.3 CONNECTING TO THE 10/100BASE-T ETHERNET PORT

The Model IM2RC/I-100B provides line side connections through a termi-

nal block or through a RJ-45 connector. Figure 6 below shows the rear

panel and the locations of the connectors.

RJ-45

Line Side

10/100-BaseT

Connector

Figure 6. IM2RC/I-100B Rear Panel

The IM2RC/I-100B Ethernet interface is designed to connect directly to a

10/100Base-T network. Figure 7 shows the signal/pin relationships on

this interface. You may connect this port to a hub or PC using a straight

through or crossover cable that is up to 330 feet long.

Figure 7. IM2RC/I-100B Ethernet Connector Pinout

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5.4 CONNECTING THE LINE INTERFACE

The Model IM2RC/I-100B is to be used with Patton function card access

products (i.e. 3088RC) There are two essential requirements for con-

necting the line interface on Model IM2RC/I-100B:

1. These units work in pairs with one IM2RC/I-100B connected to

another IM2RC/I-100B over 2 or 4-Wire Twisted pair (2 or 4-Wire

operation is determined by the front function card).

2. To function properly, the Model IM2RC/I-100B needs one or two

twisted pairs of metallic wire (two or four wire). The twisted pairs

must be unconditioned, dry, metallic wire, between 19 (.9mm) and

26 AWG (.4mm) (Appendix B describes cable requirements). Stan-

dard dial-up telephone circuits, or leased circuits that run through

signal equalization equipment, or standard, flat modular telephone

type cable, are not acceptable.

Figure 8. RJ-45 Line Interface

Note Two-wire modems use RJ-45 pins 4 and 5 and 4-wire modems

use RJ-45 pins 3, 4, 5 and 6, as shown above. Refer to the

Function Card User Manual for more details.

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6.0 OPERATION

Once the Model IM2RC/I-100B is installed, it should operate transpar-

ently. The following sections describes the power-up, general operating

instructions, and the LED status monitors.

6.1 OPERATING INSTRUCTIONS

In order to operate, the Model IM2RC/I-100B must be installed in the

rack unit. It also requires a 10/100Base-T connection. After power is

applied, the IM2RC/I-100B automatically starts performing the bridging

function without further user intervention. MAC addresses discovered

are automatically loaded into the MAC address table. They are automat-

ically deleted from the MAC address table if they experience an inactivity

of 8 minutes.

6.2 POWER-UP

The Model IM2RC/I-100B is a hot-swappable rear card that receives

power from the NetLink rack power bus. Therefore, it is powered up as

soon it is plugged into the rack and the rack power supply is turned on.

6.3 LED STATUS MONITORS

The Model IM2RC/I-100B features two LEDs that monitor the link and

activity status of the 10/100BaseT interface. Figure 9 (below) shows the

LEDs located directly beneath the RJ-45 jack.

Activity LED

Yellow

Link LED

Green

Figure 9. IM2RC/I-100B Rear Panel, LED Locations

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APPENDIX A

SPECIFICATIONS

A.1 LAN CONNECTION

RJ-45, 10/100Base-T, 802.3af Ethernet

A.2 LINE CONNECTION

RJ-45, female connector

A.3 PROTOCOL

PPP (RFC 1661) with Bridging Control Protocol (RFC3518)

A.4 MAC ADDRESS AGING

MAC addresses deleted after 6 minutes inactivity

A.5 ON-BOARD MEMORY

128MB DDR2 SDRAM; 16MB FLASH

A.6 INTERFACE

Card-edge connection to Patton modems

A.7 LED INDICATORS

(1) general status; (1) link integrity

A.8 POWER CONSUMPTION

200mA @ 12VDC, supplied by chassis power supply

A.9 TEMPERATURE RANGE

32 to 122ºF (0 to 50º C)

A.10 DIMENSIONS

2.04” x 3.24” (5.2 mm x 8.26 mm)

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NOTES

_______________________________________________________

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NOTES

_______________________________________________________

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Patton Electronics Company

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