Cabletron Systems Switch STH 24 User Manual

SmartSwitch 9000  
9T122-24  
User’s Guide  
9031206-02  
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Notice  
Notice  
Cabletron Systems reserves the right to make changes in specifications and other information  
contained in this document without prior notice. The reader should in all cases consult Cabletron  
Systems to determine whether any such changes have been made.  
The hardware, firmware, or software described in this manual is subject to change without notice.  
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL, INDIRECT,  
SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED  
TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION  
CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR  
SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.  
© Copyright March 1998 by:  
Cabletron Systems, Inc.  
35 Industrial Way  
Rochester, NH 03867-5005  
All Rights Reserved  
Printed in the United States of America  
Order Number: 9031206-02  
LANVIEW is a registered trademark, and SmartSwitch is a trademark of Cabletron Systems, Inc.  
CompuServe is a registered trademark of CompuServe, Inc.  
i960 microprocessor is a registered trademark of Intel Corp.  
Ethernet is a trademark of Xerox Corporation.  
i
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Notice  
FCC Notice  
This device complies with Part 15 of the FCC rules. Operation is subject to the following two  
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any  
interference received, including interference that may cause undesired operation.  
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital  
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable  
protection against harmful interference when the equipment is operated in a commercial environment.  
This equipment uses, generates, and can radiate radio frequency energy and if not installed in  
accordance with the operators manual, may cause harmful interference to radio communications.  
Operation of this equipment in a residential area is likely to cause interference in which case the user  
will be required to correct the interference at his own expense.  
WARNING: Changes or modifications made to this device which are not expressly approved by the  
party responsible for compliance could void the users authority to operate the equipment.  
VCCI Notice  
This is a Class A product based on the standard of the Voluntary Control Council for Interference by  
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment,  
radio disturbance may arise. When such trouble occurs, the user may be required to take corrective  
actions.  
DOC Notice  
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital  
apparatus set out in the Radio Interference Regulations of the Canadian Department of  
Communications.  
Le présent appareil numérique német pas de bruits radioélectriques dépassant les limites applicables  
aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique  
édicté par le ministère des Communications du Canada.  
ii  
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Notice  
DECLARATION OF CONFORMITY  
ADDENDUM  
Application of Council Directive(s):  
89/336/EEC  
73/23/EEC  
Manufacturer’s Name:  
Manufacturer’s Address:  
Cabletron Systems, Inc.  
35 Industrial Way  
PO Box 5005  
Rochester, NH 03867  
European Representative Name:  
European Representative Address:  
Mr. J. Solari  
Cabletron Systems Limited  
Nexus House, Newbury Business Park  
London Road, Newbury  
Berkshire RG13 2PZ, England  
Conformance to Directive(s)/Product Standards:  
Equipment Type/Environment:  
EC Directive 89/336/EEC  
EC Directive 73/23/EEC  
EN 55022  
EN 50082-1  
EN 60950  
Networking Equipment, for use in a  
Commercial or Light  
Industrial Environment.  
We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with  
this notice conforms to the above directives.  
Manufacturer  
Legal Representative in Europe  
Mr. Ronald Fotino  
____________________________________________________  
Mr. J. Solari  
______________________________________________________  
Full Name  
Full Name  
Principal Compliance Engineer  
____________________________________________________  
Managing Director - E.M.E.A.  
______________________________________________________  
Title  
Title  
Rochester, NH, USA  
____________________________________________________  
Newbury, Berkshire, England  
______________________________________________________  
Location  
Location  
iii  
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Notice  
iv  
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Contents  
Chapter 1  
Chapter 2  
Introduction  
Features........................................................................................................................... 1-1  
Related Manuals............................................................................................................ 1-4  
Getting Help .................................................................................................................. 1-4  
Installation  
Installing the MicroLAN Module ............................................................................... 2-1  
The Reset Switch ........................................................................................................... 2-3  
User-Accessible Components...................................................................................... 2-4  
Setting the Module Card DIP Switch ......................................................................... 2-5  
Ring Speed ..................................................................................................................... 2-6  
Multi-Ring Out Capability........................................................................................... 2-7  
Chapter 3  
Operation  
Bridging .......................................................................................................................... 3-2  
Transparent Bridging............................................................................................. 3-2  
Source Route Bridging .......................................................................................... 3-3  
Spanning Tree Algorithm...................................................................................... 3-3  
Flexible Network Bus (FNB)........................................................................................ 3-4  
System Management Buses ......................................................................................... 3-4  
SMB-1 Bus ............................................................................................................... 3-4  
SMB-10 Bus ............................................................................................................. 3-4  
System Diagnostic Controller...................................................................................... 3-5  
DC/ DC Converter ........................................................................................................ 3-5  
FNB Interface ................................................................................................................. 3-5  
i960 Core......................................................................................................................... 3-5  
Chapter 4  
Chapter 5  
LANVIEW LEDs  
Specifications  
Safety............................................................................................................................... 5-1  
Service............................................................................................................................. 5-1  
Physical........................................................................................................................... 5-2  
Dimensions: ............................................................................................................ 5-2  
Weight:..................................................................................................................... 5-2  
Electrical ......................................................................................................................... 5-2  
v
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Contents  
vi  
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Chapter 1  
Introduction  
The 9T122-24 MicroLAN™ Switch Module, shown in Figure 1-1, is a three port  
Token Ring bridge and router module. This module supports either one token  
ring with 24 HUB connections, or two separate Token Rings with 12 HUB  
connections, and an interface to the FNB backplane.  
Features  
Processor  
The 9T122-24 is equipped with an advanced Intel i960 microprocessor. This  
microprocessor provides a platform for all management functions within a  
scalable RISC-based architecture.  
System Management  
Interfaces to the two System Management Buses (SMB-1 and SMB-10) for  
intermodule management.  
Connectivity  
The 9T122-24 provides 24 RJ-45 Trunk Coupling Unit (TCU) lobe connectors. The  
connectors may be configured as one 24-port ring (default) or two 12-port rings.  
Bridging/Routing  
Bridging/ Routing between the front panel Token Ring connections and/ or to any  
other module in the chassis via FNB-1 or FNB-2 of the FNB bus. The module is  
capable of Transparent Bridging or Source Route Bridging. IEEE 802.1d Spanning  
Tree Protocol is supported in all bridging functions. Translational bridging  
between Source Routing and Transparent Frames types is also performed.  
1-1  
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Introduction  
Management Information Base (MIB) Support  
The 9T122-24 module provides MIB support including:  
IETF MIB II (RFC 1213)  
IETF RMON MIB (RFC 1271 and 1513)  
IETF Bridge MIBs (RFC 1493 and 1525)  
IEEE 802.5 Token Ring MIB (RFC 1231)  
Cabletron Enterprise MIBs  
For a complete list of supported MIBs, refer to the release notes provided in the  
module package.  
NOTE  
Ring Security  
This feature prevents unauthorized stations from attaching to the ring. Using  
Local or Remote Management, the module may be configured as to which MAC  
addresses are allowed to operate on the ring.  
Multi-Ring Out Capability  
With this feature any port of the module may be configured as a ring-out port  
through management software. In this configuration a stand-alone passive  
concentrator (such as an IBM 8228 MAU) may be added to the ring.  
Telnet  
A telnet session can be set up with the module to provide access to the Local  
Management screens.  
LANVIEW LEDs  
The 9T122-24 use LANVIEW – the Cabletron Systems built-in visual diagnostic  
and status monitoring system. With LANVIEW LEDs, you can quickly identify  
the device, port, and physical layer status at a glance.  
Hot Swapping  
The 9T122-24 can be installed or removed from the chassis while the SmartSwitch  
9000 is powered up without affecting the operation of the remaining modules in  
the chassis.  
1-2  
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Introduction  
TOKEN RING  
9T122-24  
SMB  
FNB  
CPU  
2
1
16 Mb  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
Figure 1-1. The 9T122-24 MicroLAN Module  
1-3  
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Introduction  
Related Manuals  
The manuals listed below should be used to supplement the procedures and  
technical data contained in this manual.  
SmartSwitch 9000 Installation Guide  
SmartSwitch 9000 Operations Guide  
SmartSwitch 9000 9C300-1 Environmental Module Users Guide  
SmartSwitch 9000 9C214-1 AC Power Supply Users Guide  
SmartSwitch 9000 Local Management Users Guide  
Getting Help  
For additional support related to this device or document, contact the Cabletron Systems Global Call  
Center:  
Phone  
(603) 332-9400  
Internet mail  
FTP  
ctron.com (134.141.197.25)  
anonymous  
Login  
Password  
your email address  
BBS  
(603) 335-3358  
Modem setting  
8N1: 8 data bits, No parity, 1 stop bit  
For additional information about Cabletron Systems or its products, visit the  
World Wide Web site: http://www.cabletron.com/  
For technical support, select Service and Support.  
To send comments or suggestions concerning this document, contact the  
Cabletron Systems Technical Writing Department via the following  
email address: [email protected]  
Make sure to include the document Part Number in the email message.  
Before calling the Cabletron Systems Global Call Center, have the following information ready:  
Your Cabletron Systems service contract number  
A description of the failure  
A description of any action(s) already taken to resolve the problem (e.g., changing mode switches,  
rebooting the unit, etc.)  
The serial and revision numbers of all involved Cabletron Systems products in the network  
A description of your network environment (layout, cable type, etc.)  
Network load and frame size at the time of trouble (if known)  
The device history (i.e., have you returned the device before, is this a recurring problem, etc.)  
Any previous Return Material Authorization (RMA) numbers  
1-4  
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Chapter 2  
Installation  
Installing the MicroLAN Module  
The SmartSwitch 9000 MicroLAN Module may be installed into any of the 14 slots  
that are available. To install, follow the steps below:  
1. Switch off the power supplies and remove all power from the SmartSwitch  
9000 chassis.  
2. Remove the blank panels, covering the slots that the module is being mounted  
in. All other slots must be covered, if modules are not being installed, to  
ensure proper airflow and cooling.  
3. Carefully remove the module from the shipping box. (Save the box and  
packing materials in the event the module must be reshipped.)  
4. Attach one end of the ESD wrist strap packaged with the SmartSwitch 9000  
chassis to your wrist. Plug the other end into the ESD Wrist Strap Grounding  
receptacle in the lower right corner of the SmartSwitch 9000 Chassis shown in  
5. Remove the module from the plastic bag. Observe all precautions to prevent  
damage from Electrostatic Discharge (ESD).  
6. Carefully examine the module, checking for damage. If any damage exists,  
DO NOT install the module. Contact Cabletron Systems Technical Support  
immediately.  
7. Slide the module into a slot and lock down both the top and bottom plastic  
engages the backplane connectors properly. When installing the module,  
ensure that both circuit cards are between the card guides, as shown in  
2-1  
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Installation  
Plastic Tab  
Jack for ESD  
Wrist Strap  
Metal Back-Panel  
Module  
Module Guides  
Warning:  
Ensure that the circuit card is between the  
card guides.  
Lock down the top and bottom plastic tabs  
at the same time, applying even pressure.  
Figure 2-1. Installing the MicroLAN Module  
2-2  
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Installation  
The Reset Switch  
The Reset switch is located on the front panel, under the top plastic tab as shown  
Pressing the reset switch twice within three seconds causes the processor (i960)  
to reset.  
Pressing and holding the switch on for three or more seconds causes the  
module to shutdown. Pressing and holding again for three seconds restarts the  
module.  
SNMP management may be used to disable this switch to enhance module  
security.  
Reset Switch  
SMB  
CPU  
Figure 2-2. The Reset Switch  
2-3  
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Installation  
User-Accessible Components  
Figure 2-3 shows the various components that are accessible to the user. These  
consist of an eight-position dip switch (explained in the next section), replaceable  
PROMs and sockets for RAM. These will be used for future upgrades.  
SMB-1 PROM  
i960 Processor  
Flash SIMM  
Socket  
DIP Switch  
Boot PROM  
Shared Packet  
Memory SIMM  
Local Program Memory  
SIMM Socket  
Figure 2-3. User Accessible Components  
2-4  
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Installation  
Setting the Module Card DIP Switch  
An eight-switch DIP switch is located on the module card as shown in Figure 2-3  
and in Figure 2-4. The function of the switches are listed in Table 2-1.  
1
2
3
4
5
6
7
8
Figure 2-4. Location of Module DIP Switch  
2-5  
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Installation  
See the Cautions at the end of this table.  
Table 2-1. Function of DIP Switch  
Switch  
8
Function  
Description  
When toggled, this switch clears user-entered  
passwords stored in NVRAM, and restores the  
default passwords. Once reset you can use the  
defaults or enter new passwords.  
1
Clear Password  
The module uses NVRAM to store user entered  
parameters such as IP addresses, device name, etc.  
To reset these parameters to the factory defaults,  
toggle this switch. Once reset, you can use the  
defaults or enter new parameters, which are stored  
in NVRAM when the module is powered down,  
and remain there until the switch is toggled again.  
2
7
6
Clear NVRAM  
Toggling this switch after pulling the board out of  
the SmartSwitch 9000, clears download information  
from NVRAM and forces image files to be  
downloaded from the station configured to act as  
that modules’ BOOTP server.  
Force BootP  
Download  
For Factory Use Only  
For Factory Use Only  
For Factory Use Only  
For Factory Use Only  
5
4
3
2
Reserved  
Reserved  
Reserved  
Reserved  
Off = One ring of 24 ports (factory default)  
On = two rings of 12 ports each  
Ring  
Configuration  
1
1
Caution: Do not toggle Switch 8 unless you intend to reset the user configured  
passwords to their factory default settings.  
!
CAUTION  
2
Caution: Do not toggle Switch 7 unless you intend to reset the user parameters  
to the factory default settings.  
Ring Speed  
The module defaults to a 16Mbps ring speed on all rings. This may be changed  
though local management.  
2-6  
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Installation  
Multi-Ring Out Capability  
Any port of the module may be configured as a ring-out port through  
management software. In this configuration a stand-alone passive concentrator  
(such as an IBM 8228) may be added to the ring as shown in Figure 2-5. This  
allows for a star-wired network with the SmartSwitch 9000 at the center. Consult  
the SmartSwitch 9000 Local Management Guide for information on configuring the  
ports.  
TOKEN RING  
9T122-24  
SMB  
FNB  
CPU  
9T122-24  
2
1
16 Mb  
1
2
3
4
5
6
7
8
IBM 8228™  
9
STP Cable  
10  
11  
12  
Figure 2-5. Using a Ring-Out Port  
2-7  
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Installation  
2-8  
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Chapter 3  
Operation  
The 9T122-24 MicroLAN Module provides connectivity between the front panel  
Token Ring(s) and the FDDI rings on the backplane (FNB-1 or FNB-2).  
SmartSwitch 9000 modules connect to either the Internal Network Bus (INB) or  
the Flexible Network Bus (FNB) bus. The 9T122-24 module connects to the FNB  
configured as one Token Ring (factory default) or as two rings. In the two-ring  
configuration, the rings function as individual networks, each with 12 ports.  
Bridging/ Routing may occur between these two rings and/ or to any other  
SmartSwitch 9000 module via the FNB.  
DC/DC  
Converter  
SMB-1  
System  
Diagnostic  
Controller  
SMB-10  
Twelve  
Front Panel  
Connections  
FNB-1 or  
FNB-2  
i960 PLUS Core  
Twelve  
Front Panel  
Connections  
Figure 3-1. 9T122-24 Block Diagram  
3-1  
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Operation  
Bridging  
The 9T122-24 is configured for SRT bridging. It will pass SR (Source Routing)  
frames between the rings and provides translation to transparent frames over the  
FNB to Ethernet and FDDI modules. For information on configuring the bridging  
function, see the addendum to the SmartSwitch 9000 Local Management Users  
Guide, containing information specific to this module.  
Transparent Bridging  
Transparent Bridging is accomplished by building a Source Address Table (SAT)  
from source MAC/ physical addresses and using the SAT to make forwarding  
decisions.  
The 9T122-24 prevents unnecessary network traffic from passing through the  
module by implementing two separate filtering processes — IEEE 802.1d or  
Cabletrons Special Filtering Database. These processes may be used individually  
or in tandem.  
The first process, the IEEE 802.1D filtering process, begins with the creation of a  
list of local node addresses in the SAT. When the 9T122-24 first goes on-line, it  
initially forwards all packets across the bridge. After receiving a packet on the  
bridge port, the 9T122-24 learns the address of the sending node from the packet  
and stores that address in the SAT. In this manner, the bridge learns the address of  
each node on each side of the bridge. The bridge then uses the addresses stored in  
the table to compare the destination address of each subsequent packet that  
travels to the bridge. If the destination address of a packet resides on the bridge  
segment, the 9T122-24 does not forward across the Token Ring link.  
The second filtering process, the Cabletron Systems Special Filtering Database,  
provides an additional step in the filter/ forward decision. Through Remote  
Management, you can define up to 10 additional filtering parameters for  
incoming network traffic. These parameters include (but are not limited to) the:  
Destination address  
Source address  
Type field (protocol)  
64 bytes of the data field (using a data offset)  
For example, using this process, you can ensure that the 9T122-24 always filters or  
forwards packets with a specific protocol or address.  
3-2  
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Operation  
Source Route Bridging  
Source Route Bridging operates by transmitting frames over a designated route.  
Unlike Transparent Bridging, all devices in a Source Route Bridged (SRB) network  
“know” the locations of other stations within the network. Using a portion of the  
MAC frame header known as the RIF (Routing Information Field), the source  
device determines the route for the frames it sends.  
In order for source routing to work, the source station must determine the proper  
route to reach the desired destination. To accomplish this:  
1. The source station sends out frames called All Route Explorer (ARE) or Single  
Route Explorer (SRE) frames onto the network. All Source Route Bridges  
recognize these frames and forwards them to their outbound ports.  
2. The receiving bridges append their own route information to the Route  
Information Field (RIF) in the MAC frame header and transmit the frame  
again.  
3. Eventually, the original source device receives all of the ARE replies from the  
other end stations on the network.  
4. From this information, the source device can determine a desired route for  
each frame it transmits.  
Spanning Tree Algorithm  
The 9T122-24 promotes maximum network use in multiple-bridge environments.  
A bridge learns the bridge topology of its network from bridge protocol data that  
it receives from other bridges within the network. The bridges then apply the  
Spanning Tree Algorithm (STA) to select a root bridge, and then determine  
primary data paths within potential data loop configurations.  
Spanning Tree Algorithm is a hierarchy (or tree) of priorities that bridges establish  
between themselves. This hierarchy guarantees that primary and redundant data  
paths are clearly defined at all times, so that the network is continuously available  
to users.  
In a multiple-bridge environment, one bridge in the network establishes itself as  
the root bridge. As the root, this bridge has priority over all other bridges. In a  
Spanning Tree, all of the bridges must determine which bridge is the root, and  
then determine their own relative priority within the network.  
3-3  
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Operation  
Flexible Network Bus (FNB)  
The FNB consists of two dual FDDI networks, the FNB-1 and FNB-2, providing  
up to 400 Mbps of data bandwidth. These FDDI networks are 100% ANSI  
FDDI-compliant supporting SMT (version 7.3), MAC, PHY, and PMD standards.  
This allows the FNB to traverse multiple SmartSwitch 9000 hubs, or connect to  
any ANSI FDDI-compliant device, through standard A/ B port connections, using  
the FDDI repeater module.  
System Management Buses  
There are two management channels within the SmartSwitch 9000 system: the  
SMB-1 and the SMB-10. These buses provide out-of-band management and inter-  
module management communication.  
SMB-1 Bus  
The SMB-1 is a 1Mbs management bus located within the SmartSwitch 9000. This  
bus is utilized by all diagnostic controllers in the system including connectivity  
modules, power supply modules and the environmental module. The SMB-1  
transports inter-chassis information between system components, such as power  
and environmental information, as well as diagnostic messages. Periodic  
loop-back tests are preformed by all modules that share this bus to ensure the  
validity of SMB-1. In the event a failure is detected on SMB-1, the SMB-10 may be  
used as an alternate communication channel.  
SMB-10 Bus  
The SMB-10 is a 10Mbs management bus located within the SmartSwitch 9000  
that is also used for inter-chassis communication of modules, as well as serving as  
an out-of-band management channel into the SmartSwitch 9000. The SMB-10 is  
externalized from the chassis via an optional Ethernet Port Interface Module  
(EPIM) located on the front of the Environmental Module. Through an EPIM  
connection, full SNMP management of the SmartSwitch 9000 is available out-of-  
band from user data. Modules that share the SMB-10 bus periodically send out  
loop-back packets to ensure the validity of SMB-10. In the event a fault is detected  
on the SMB-10, the SMB-1 can be used as an alternate communication channel by  
the modules.  
3-4  
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Operation  
System Diagnostic Controller  
This diagnostic controller is composed of a Z-80 microprocessor and its  
supporting logic. The diagnostic controller is designed to control the power-up  
sequencing of modules, monitor the 9T122-24 input and output power  
parameters, keep watch over the main host processor, as well as monitor the  
temperature and control the SMB LANVIEW diagnostic LED. Although the  
diagnostic controller and the main host processor can operate independent of  
each other if needed, they exchange information about each others status and  
overall module condition. The information gathered by the diagnostic controller  
is available to the network manager via local/ remote management and the LCD  
located on the environment module. The 9T122-24 has been designed so that in  
the event of a diagnostic controller fault, the module will continue to function.  
DC/DC Converter  
The DC/ DC converter converts the 48 VDC on the system power bus to the  
necessary operating voltages for its host network services module. The diagnostic  
controller controls the operation of the DC/ DC converter.  
FNB Interface  
SmartSwitch 9000 modules are designed with one of two attachment policies. One  
allows a module to dual attach to either FNB-1 or FNB-2; the second allows dual  
attachment to both FNB-1 and FNB-2. The 9T122-24 have one dual attachment to  
the FNB backplane, connecting to either FNB-1 or FNB-2. The module can insert  
into the FNB or bypass it. These flexible configuration options make the  
SmartSwitch 9000 ideal for networks designed to Bridge/ Route multiple lower  
speed LANs to FDDI and/ or networks designed using an FDDI collapsed  
backbone.  
i960 Core  
The i960 core in the FNB module serves two major functions: it provides the  
packet forwarding logic and performs all network management services. FNB  
modules can be configured to run as layer 2 bridges, layer 3 routers or as  
SecureFast Packet Switches. It is possible to run the bridging and routing options  
concurrently, but the SFPS option cannot run with bridging and routing.  
3-5  
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Operation  
The i960 core provides the SNMP protocol stacks, as well as support for industry-  
standard MIBs. Additionally, Cabletron enterprise-extension MIBs are supported  
for each media type. Advanced management services, such as the Distributed  
LAN Monitor, RMON, telnet and network address to MAC address mapping,  
are also provided by the i960 core.  
3-6  
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Chapter 4  
LANVIEW LEDs  
The front panel LANVIEW LEDs, shown in Figure 4-1, indicate the status of the  
module and may be used as an aid in troubleshooting.  
TOKEN RING  
9T122-24  
System Status  
FNB Receive  
FNB Transmit  
SMB  
FNB  
CPU  
Token Ring Mac Transmit  
Token Ring Mac Receive  
2
1
Token Ring Speed  
(16mb)  
16 Mb  
1
2
3
4
5
Link  
Figure 4-1. LANVIEW LEDs  
4-1  
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LANVIEW LEDs  
The functions of the two System Status LEDs, System Management Bus (SMB)  
and the CPU, are listed in Table 4-1.  
Table 4-1. System Status LEDs (SMB and CPU)  
LED Color  
State  
Description  
Fully operational.  
Green  
Yellow  
Functional  
Crippled  
Booting  
Reset  
Not fully operational (i.e., one bad port).  
Blinks yellow and green while booting.  
Normal power-up reset.  
Yellow/ Green  
Red  
Red (Flashing)  
Off  
Failed  
Fatal error has occurred.  
Power off  
Module powered off.  
The functions of the FNB receive LED are listed in Table 4-2.  
Table 4-2. FNB Receive LEDs  
LED Color  
State  
Red  
Red (Flashing)  
Green  
No link, Port disabled  
Link, Port disabled  
Link, No activity, Port enabled  
Activity (Flashing rate indicates rate of activity).  
No activity  
Yellow (Flashing)  
Off  
The functions of the FNB transmit LED are listed in Table 4-3.  
Table 4-3. FNB Transmit LEDs  
LED Color  
State  
Red  
Port disabled  
Fault or Error (Flashing rate indicates rate)  
Port in standby state  
Red (Flashing)  
Yellow (Flashing)  
Green (Flashing)  
Off  
Activity (Flashing rate indicates rate of activity).  
No activity  
4-2  
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LANVIEW LEDs  
The functions of the Token Ring Mac receive LEDs are listed in Table 4-4.  
Table 4-4. Token Ring Receive LED  
LED Color  
State  
Red  
Red (Flashing)  
Green  
No link, Port disabled  
Link, Port disabled  
Link, No activity, Port enabled  
Yellow (Flashing) Link, Activity (Flashing rate indicates rate of activity).  
Off No link, No activity, Port enabled  
The function of the Token Ring Mac transmit LEDs are listed in Table 4-5.  
Table 4-5. Token Ring Transmit LED  
LED Color  
State  
Red  
Port Disabled  
Fault, Ring is Beaconing  
Red (Flashing)  
Green (Flashing)  
Yellow (Flashing)  
Off  
Activity (Flashing rate indicates rate of activity).  
Port in standby state, Link  
No activity, Port enabled  
The functions of the Link LED are listed in Table 4-6.  
Table 4-6. Port Link LEDs  
LED Color  
State  
Red  
Red (Flashing)  
Green  
No link, Port disabled  
Link, Port disabled or Speed fault  
Link, Port enabled  
Off  
No link, Port enabled  
4-3  
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LANVIEW LEDs  
The function of the Token Ring speed LEDs is listed in Table 4-7.  
Table 4-7. Token Ring Speed  
LED Color  
State  
Yellow  
Off  
16 Mbs  
4 Mps  
4-4  
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Chapter 5  
Specifications  
Safety  
It is the responsibility of the person who sells the system to which the module will  
be a part to ensure that the total system meets allowed limits of conducted and  
radiated emissions.  
!
CAUTION  
This equipment meets the safety requirements of:  
UL 1950  
CSA C22.2 No. 950  
EN 60950  
IEC 950  
EMI Requirements of FCC Part 15 Class A  
EN 55022 Class A  
VCCI Class I  
EMC requirements of:  
EN 50082-1  
IEC 801-2 ESD  
IEC 801-3 Radiated susceptibility  
IEC 801-4 EFT  
Service  
MTBF (MHBK-217E)  
MTTR  
>200,000 hrs.  
<0.5 hr.  
5-1  
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Specifications  
Physical  
Dimensions:  
35.0 D x 44.0 H x 3.0 W centimeters  
(13.8 D x 17.4 H x 1.2 W inches)  
Weight:  
Unit:  
1.36 kg. (3lb)  
Shipping:  
1.81 kg. (4lb)  
Electrical  
CPU:  
i960  
Shared DRAM Memory:  
4Mb (expandable to 12 Mb)  
4Mb (expandable to 12 Mb)  
2Mb (expandable to 14 Mb)  
(2) Texas Instruments TMS380C26 Controllers  
128 Kb  
Local DRAM Memory:  
Flash:  
Token Ring Interfaces:  
NVRAM:  
5-2  
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