Nortel Networks 207344 B User Manual

Part No. 207344-B  
February 2000  
4401 Great America Parkway  
Santa Clara, CA 95054  
Using the Centillion  
EtherSpeedII Switch Modules  
Achtung: Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes  
Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen verantwortlich  
ist.  
Attention: Ceci est un produit de Classe A. Dans un environnement domestique, ce produit risque de créer des  
interférences radioélectriques, il appartiendra alors à l’utilisateur de prendre les mesures spécifiques appropriées.  
To maintain compliance with FCC radio frequency emission limits, shielded cables are required to connect equipment  
to other Class A certified devices and the use of quadshield, RG-6/U type CATV cable is required for connection to  
the CATV system. Any changes or modifications may void the user’s authorization to operate this equipment.  
EC Declaration of Conformity  
This product conforms to the provisions of Council Directive 89/336/EEC and 73/23/EEC.  
The Declaration of Conformity is available on the Nortel Networks World Wide Web site at  
Japan/Nippon Requirements Only  
Voluntary Control Council for Interference (VCCI) Statement  
Taiwan Requirements  
Bureau of Standards, Metrology and Inspection (BSMI) Statement  
Canada Requirements Only  
Canadian Department of Communications Radio Interference Regulations  
These digital apparatuses (Centillion EtherSpeedII 10/100BASE-T 20-Port switch module and the Centillion  
EtherSpeedII 100BASE-FX 16-Port switch module) do not exceed the Class A limits for radio-noise emissions from  
digital apparatus as set out in the Radio Interference Regulations of the Canadian Department of Communications.  
Règlement sur le brouillage radioélectrique du ministère des Communications  
Cet appareil numérique (Centillion EtherSpeedII 10/100BASE-T 20-Port switch module and the Centillion  
EtherSpeedII 100BASE-FX 16-Port switch module) respecte les limites de bruits radioélectriques visant les appareils  
numériques de classe A prescrites dans le Règlement sur le brouillage radioélectrique du ministère des  
Communications du Canada.  
207344-B  
iii  
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iv  
207344-B  
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207344-B  
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vi  
207344-B  
Contents  
Preface  
Related Publications ........................................................................................................xvi  
Overview of the EtherSpeedII Switch Modules  
Spanning Tree Protocol 802.1d Support ..................................................................1-9  
Support for Virtual LANs ..........................................................................................1-9  
Filtering ....................................................................................................................1-9  
Hot-Swapping Capability ........................................................................................1-10  
10/100 Mb/s Autonegotiation Ports ..............................................................................1-10  
207344-B  
vii  
Planning a Network with EtherSpeedII Switch Modules  
Segment Switch in an Enterprise Network ...............................................................2-7  
MultiLink Trunking ....................................................................................................2-9  
Installing the EtherSpeedII Switch Modules  
Checking LEDs on the Switch Modules ..........................................................................3-6  
Removing a Module ........................................................................................................3-8  
Chapter 4  
Troubleshooting  
EtherSpeedII Switch Module Startup Failure .................................................................4-2  
Port Connection Problems ..............................................................................................4-3  
viii  
207344-B  
Appendix A  
Cables and Connectors  
UTP Cabling .................................................................................................................. B-2  
UTP Cables and Connectors ......................................................................................... B-5  
Using Shielded Twisted Pair Cables .............................................................................. B-7  
Appendix C  
LED Displays on the EtherSpeedII Switch Modules  
Index  
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ix  
x
207344-B  
Figures  
Figure 1-1.  
EtherSpeedII Switch Modules in a Network Center ................................1-2  
Figure 1-3. EtherSpeedII 100BASE-FX 16-Port Switch Module ................................1-5  
Figure 2-3. Replacing a Bridge ...................................................................................2-5  
Figure 2-4. Desktop Switch with ATM Uplinks ............................................................2-6  
Figure 2-7. MultiLink Trunking Example .....................................................................2-9  
Figure 3-5. Seating the Module ..................................................................................3-5  
Figure 3-6. LED Display for the 10/100BASE-T switch module .................................3-6  
Figure 3-9. Removing the Module from the Centillion 50/100 Chassis ....................3-10  
Figure B-1. MDI-X Internal Crossover (RJ-45 Example) ........................................... B-2  
Figure B-3. MT-RJ Connector .................................................................................... B-4  
Figure B-4. 10BASE-T/100BASE-TX Ethernet UTP Crossover Cable ...................... B-5  
Figure B-5. Fast Ethernet Type 1 Balun Media Adapter ............................................ B-7  
Figure C-1. LED Display for the EtherSpeedII 10/100BASE-T Switch Module ......... C-1  
Figure C-2. MT-RJ LEDs for the EtherSpeedII 100BASE-FX Switch Module ........... C-3  
207344-B  
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xii  
207344-B  
Tables  
Table B-1.  
Table B-2.  
Table B-3.  
Table B-4.  
10BASE-T/100BASE-TX MDI-X Port Pin Assignments .......................... B-5  
Pairs in an RJ-45 Crossover Cable ......................................................... B-6  
Table C-1.  
Table C-2.  
LEDs on the EtherSpeedII 10/100BASE-T Switch Module .................... C-2  
LEDs on the EtherSpeedII 100BASE-FX Switch Module ....................... C-4  
207344-B  
xiii  
xiv  
207344-B  
Preface  
This guide provides an overview of the Nortel NetworksCentillionEtherSpeed  
II10/100BASE-T 20-Port Switch Module and the Centillion EtherSpeedII  
100BASE-FX 16-Port Switch Module, and information about installing the  
switch modules.  
Instructions to configure both EtherSpeedII switch modules is described in Using  
SpeedView 4.2 for Windows and Release Notes for the Centillion Platform Release  
4.1.2. For more information about this topic, see Related Publicationson  
page xvi.  
In this guide, the Centillion EtherSpeedII 10/100BASE-T 20-Port switch module  
and the Centillion EtherSpeedII 100BASE-FX 16-Port switch module are also  
referred to as either EtherSpeedII switch modules or as switch modules.  
Before You Begin  
This guide is intended for local area network administrators who are responsible  
for installing, configuring, or maintaining a network and have the following  
background:  
Familiarity with Ethernet network administration  
Familiarity with the tools and procedures for installing and operating sensitive  
electronic equipment  
Understanding of Nortel Networks network management concepts and  
terminology  
207344-B  
xv  
   
Using the Centillion EtherSpeedII Switch Modules  
Related Publications  
For information about EtherSpeedII switch modules, refer to the following related  
publications:  
Using SpeedView 4.2 for Windows (Part number 893-891-E)  
Describes this application, which is used for configuring the module.  
Release Notes for the Centillion Platform Release 4.1.2  
(Part number 203315-C)  
Describes updates to SpeedView for the 4.0 software release.  
Reference Guide for the Centillion Command Line Interface 4.2  
(Part number 893-00985-D)  
Describes setup and configuration procedures for Centillionswitches using  
the command line interface.  
Installation and Reference for the Centillion 50 and 100 Chassis  
(Part number 893-894-C)  
Provides installation information for the Centillion 50and Centillion 100™  
chassis.  
Hard-Copy Technical Manuals  
You can print selected technical manuals and release notes, for free, directly from  
the Internet. Go to the http://www12.nortelnetworks.com/library Web address.  
Find the product for which you need documentation. Then locate the specific  
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address at www.adobe.com to download a free copy of Acrobat Reader.  
You can purchase selected documentation sets, CDs, and technical publications  
though the Internet at the www1.fatbrain.com/documentation/nortel/ Web address.  
xvi  
207344-B  
             
Preface  
How to Get Help  
If you purchased a service contract for your Nortel Networks product from a  
distributor or authorized reseller, contact the technical support staff for that  
distributor or reseller for assistance.  
If you purchased a Nortel Networks service program, contact one of the following  
Nortel Networks Technical Solutions Centers:  
Technical Solutions Center  
Telephone Number  
Billerica, MA  
800-2LANWAN (800-252-6926)  
800-2LANWAN (800-252-6926)  
33-4-92-96-69-68  
Santa Clara, CA  
Valbonne, France  
Sydney, Australia  
Tokyo, Japan  
61-2-9927-8800  
81-3-5740-1700  
207344-B  
xvii  
   
Chapter 1  
Overview of the EtherSpeedII Switch Modules  
This chapter introduces the Centillion EtherSpeedII 10/100BASE-T 20-Port  
Switch Module and the Centillion EtherSpeedII 100BASE-FX 16-Port Switch  
Module, and includes information about the following topics:  
Overview of the switch modules (this page)  
Features of the switch modules (page 1-2)  
Physical description of the switch modules (page 1-4)  
Switch configuration and management (page 1-7)  
Overview of the Switch Modules  
The EtherSpeedII 10/100BASE-T 20-Port Switch Module provides 20 RJ-45  
10/100 megabit per second (Mb/s) autonegotiation ports that support servers,  
routers, or dedicated connections to users (Figure 1-1). These switch modules can  
also support multiple users through a shared-media hub connection to a port.  
The EtherSpeedII 100BASE-FX 16-Port Switch Module provides 16 MT-RJ 100  
Mb/s fiber ports for connections that support connections to other 100BASE-FX  
devices, for example, switches, servers, and routers.  
Each switch module is installed in a single slot of a Centillion 50/100 chassis.  
You can use SpeedViewnetwork management software to configure and manage  
the modules.  
207344-B  
1-1  
       
Using the Centillion EtherSpeedII Switch Modules  
Router  
Centillion 100  
chassis  
ATM MDA MCP  
module  
BayStack Ethernet hub  
100 Mb/s  
EtherSpeedII  
modules  
UTP 10/100 connections  
to users  
9465EA  
Figure 1-1.  
EtherSpeedII Switch Modules in a Network Center  
Note: You can use Category 3 UTP cable only for fixed 10 Mb/s port  
operation, not for 100 Mb/s or 10/100 autonegotiating port operation.  
Features of the Switch Modules  
The Centillion EtherSpeedII 10/100BASE-T 20-Port Switch Module and the  
Centillion EtherSpeedII 100BASE-FX 16-Port Switch Module offer the following  
features:  
Wire-speed, port-to-port, packet transfer  
Single-slot design to fit into the Centillion 50/100 chassis  
Autonegotiation of Ethernet 10/100 Mb/s speed  
(EtherSpeedII 10/100BASE-T switch module only)  
Layer 2 MAC address-based switching  
Local frame switching, module-to-module switching, backplane switching,  
and riser switching  
200 MHz RISC processor  
1-2  
207344-B  
         
Overview of the EtherSpeedII Switch Modules  
20 RJ-45 UTP network interface connectors  
(EtherSpeedII 10/100BASE-T switch module only)  
16 MT-RJ fiber connectors (EtherSpeedII 100BASE-FX switch module only)  
Front-panel LEDs to indicate port status  
Port-based virtual LANs (VLANs)  
Protocol-based VLANs  
Protocol-sensitive VLANs classify packets based on protocol types. Most  
customers have multiple protocols per LAN segment, so a switch port needs  
to support multiple VLANs based on different protocol types. This feature  
allows you to separate data based on protocols and not on physical limitations.  
IEEE 802.1Q tag recognition support  
EtherSpeedII switch modules support recognition of VLAN tagged frames  
based on IEEE 802.1Q tags. Frames entering an EtherSpeedII switch module  
port that contain an 802.1Q tag are mapped to a corresponding VLAN. Based  
on the final destination, the frame is sent as either an Ethernet-type frame or  
an 802.1Q VLAN tagged frame. VLAN membership can be assigned by any  
combination of port with either tag or protocol.  
Support for IEEE 802.1d Spanning Tree  
Content-addressable memory (CAM) support for 8192 entries  
Port steering/port mirroring  
Input and output filtering supported by switching software  
Hardware support for IP multicast  
Support for RMON Management Information Base (MIB)  
Ethernet Statistics Group  
Ethernet History Group  
Ethernet Alarm Group  
Ethernet Event Group  
Ability to install, remove, and replace a module in an operational chassis  
(hot-swap)  
Hardware Assist Multi-Protocol Over ATM (MPOA)  
207344-B  
1-3  
     
Using the Centillion EtherSpeedII Switch Modules  
MPOA is the ATM Forum standard that specifies a method to efficiently  
transport intersubnet unicast data in a LAN emulation (LANE) environment.  
MPOA uses LANE and Next Hop Resolution Protocol (NHRP) processes to  
allow direct shortcut virtual channel connections (VCCs) to be established for  
intersubnet communication without requiring passage through a router. The  
intrasubnet communication continues to be supported over LANE. For IP,  
Nortel Networks has adopted MPOA as the standard to implement layer 3  
switching in an ATM network.  
Improved performance in segmentation and reassembly (SAR) performance  
to 3.2 gigabits per second (Gb/s).  
MultiLink Trunking (MLT)  
Physical Description of the Switch Modules  
The EtherSpeedII 10/100BASE-T switch module (Figure 1-2) consists of a  
printed circuit board with a metal module faceplate. The switch module includes  
captive retaining screws and inserter/extractor levers on the top and bottom of the  
front panel.  
Backplane connector  
Captive retaining  
LEDs  
screws  
Inserter/extractor  
levers  
20 10/100BASE-T ports (RJ-45)  
Printed circuit  
board  
9454FA  
Figure 1-2.  
EtherSpeedII 10/100BASE-T 20-Port Switch Module  
1-4  
207344-B  
           
Overview of the EtherSpeedII Switch Modules  
The EtherSpeedII 100BASE-FX switch module (Figure 1-3) consists of a printed  
circuit board with a metal module faceplate. The module includes captive  
retaining screws and inserter/extractor levers on the top and bottom of the front  
panel.  
Backplane connector  
Captive retaining  
LEDs  
screws  
Inserter/extractor  
levers  
16 100BASE-FX ports (MT-RJ)  
Printed circuit  
board  
9722FA  
Figure 1-3.  
EtherSpeedII 100BASE-FX 16-Port Switch Module  
Each switch module occupies one slot in a Centillion 50/100 chassis. In a  
Centillion 100 chassis, you can install a maximum of either:  
Five EtherSpeedII switch modules and one master control processor  
(MCP) switch module  
Four EtherSpeedII switch modules and two MCP switch modules  
In a Centillion 50 chassis, you can install a maximum of two EtherSpeedII switch  
modules and one MCP switch module.  
Note: See Appendix B, Cables and Connectors,for more information about  
wiring and pin assignments.  
207344-B  
1-5  
       
Using the Centillion EtherSpeedII Switch Modules  
LED Displays on the Switch Modules  
LEDs on a switch module indicate port status. Figure 1-4 illustrates the front  
panel of an EtherSpeedII 10/100BASE-T switch module.  
LEDs  
20 10/100BASE-T ports  
(RJ-45)  
LINK 10/100  
9458FA  
Figure 1-4.  
LEDs on the EtherSpeedII 10/100BASE-T Switch Module  
Figure 1-5 illustrates the front panel of an EtherSpeedII 100BASE-FX switch  
module.  
LEDs  
16 100BASE-FX  
LINK ERROR  
ports (MT-RJ)  
9458FB  
Figure 1-5.  
LEDs on the EtherSpeedII 100BASE-FX Switch Module  
1-6  
207344-B  
           
Overview of the EtherSpeedII Switch Modules  
Note: For more information about LEDs, refer to Appendix C, LED Displays  
on the EtherSpeedII Switch Modules.”  
Switch Configuration and Management  
You manage and configure EtherSpeedII switch modules through access to an  
installed MCP module in the Centillion 50/100 chassis with the following network  
management applications and features:  
Network management applications such as SpeedView and Optivity®  
Command line interface (CLI)  
Simple Network Management Protocol (SNMP) agent with Centillion MIB  
extensions  
Trivial File Transfer Protocol (TFTP) support  
Spanning Tree Protocol support  
VLAN support  
Filtering  
Hot-swapping capability  
Network Management Applications and Features  
EtherSpeedII switch modules support the following applications and features to  
configure and manage your network.  
SpeedView  
SpeedView is a network management application that runs on Windows® 95 or  
Windows 98 and Windows NT® and provides a graphical user interface to set up  
your switch. SpeedView allows you to monitor and control network traffic and to  
perform advanced operations such as filter configuration. For more information  
about SpeedView, refer to Using SpeedView 4.2 for Windows and Release Notes  
for the Centillion Platform Release 4.1.2.  
207344-B  
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Using the Centillion EtherSpeedII Switch Modules  
Optivity  
The Optivity Network Management System(NMS) provides enterprise-wide  
configuration and monitoring support for the Centillion 50/100 chassis switches.  
SpeedView provides configuration support when integrated with Optivity NMS.  
Expanded View, OmniView, Network Atlas, Threshold Manager, and other  
Optivity applications provide comprehensive monitoring and troubleshooting  
support. For more information about Optivity network management software,  
refer to your Optivity documentation.  
Command Line Interface  
The Centillion command line interface (CLI) provides an out-of-band interface  
for the initial setup of basic configuration parameters such as IP address and  
bridging mode. For more information about the CLI structure and commands,  
refer to Reference Guide for the Centillion Command Line Interface 4.2.  
MCP Modules  
Each EtherSpeedII switch module maintains its own switch tables for directing  
traffic. A central supervisor, the master control processor (MCP), consolidates  
these distributed tables into master tables that are accessible to other modules  
within a chassis or within a network of System 5000 hubs or Centillion switch  
modules. The MCP also handles the switch-wide housekeeping functions such as  
network management.  
SNMP MIB Support  
The Centillion switch modules support a Simple Network Management Protocol  
(SNMP)-compatible agent with private MIB extensions. Built-in SNMP agent  
support ensures compatibility with existing network management tools. The MCP  
modules support MIB-I and MIB-II (RFC 1213) standards that provide access to  
detailed management statistics.  
Using SpeedView, you can configure SNMP traps to be generated automatically  
for conditions such as unauthorized access attempts or changes in operating status  
on individual ports.  
1-8  
207344-B  
                     
Overview of the EtherSpeedII Switch Modules  
TFTP Support  
Trivial File Transfer Protocol (TFTP) is a supported Transmission Control  
Protocol/Internet Protocol (TCP/IP) service you can use to download software and  
configuration information to the MCP module memory. TFTP allows you to  
transfer an updated switch agent and configuration files from a remote server to  
flash memory. You can perform a transfer over the network or through a serial  
connection to the installed MCP module.  
Spanning Tree Protocol 802.1d Support  
The EtherSpeedII switch module software supports the Spanning Tree Protocol  
as specified in the IEEE 802.1d standard. The Spanning Tree Protocol is  
implemented to detect and eliminate logical loops in a bridged or switched  
network. When multiple paths exist, the spanning tree algorithm configures the  
network so that a bridge or switch uses only the most efficient path. If that path  
fails, the protocol automatically reconfigures the network to make another path  
become active, thus sustaining network operations.  
Support for Virtual LANs  
Using an EtherSpeedII switch module, you can group one or more physical ports  
to form a virtual LAN (VLAN) that constitutes a single broadcast domain.  
VLANs are formed when broadcast domains are configured across multiple  
switches. Each Ethernet segment is an independent physical segment with its own  
collision domain, but all segments within a VLAN appear to the user as a  
broadcast domain.  
Filtering  
Filtering capabilities for the EtherSpeedII switch modules are implemented in  
system hardware and controlled by system software. Refer to the appropriate  
Centillion release notes for descriptions of the supported filtering capabilities,  
features, and availability.  
207344-B  
1-9  
               
Using the Centillion EtherSpeedII Switch Modules  
Hot-Swapping Capability  
You can insert EtherSpeedII switch modules into or remove them from a chassis  
without interrupting service to other modules within the Centillion 50/100 chassis.  
This feature is called hot-swapping.”  
Caution: Be sure to remove cables from all ports on the module, or disable all  
the ports through the management interface, prior to hot-swapping.  
10/100 Mb/s Autonegotiation Ports  
The EtherSpeedII 10/100BASE-T switch module contains 20 10/100 Mb/s UTP  
autonegotiating Ethernet ports with shielded RJ-45 connectors. The RJ-45  
connectors accept Category 3 or 5 unshielded twisted pair (UTP) cable or shielded  
twisted pair (STP) cable and are wired as MDI-X ports to connect end stations to  
patch panels without using crossover cables.  
Note: See Appendix B, Cables and Connectors,for information about  
wiring and pin assignments.  
1-10  
207344-B  
         
Chapter 2  
Planning a Network with  
EtherSpeedII Switch Modules  
Installing the EtherSpeedII 10/100BASE-T or EtherSpeedII 100BASE-FX switch  
modules in a network can significantly improve LAN performance. This chapter  
provides information to help you plan a network that uses either or both of these  
modules. The chapter includes the following topics:  
Connecting the EtherSpeedII Switch Modules to Ethernet hubs and network  
devices (this page)  
Typical network configuration examples (page 2-2)  
Factory-set and predefined configurations (page 2-10)  
Note: Follow the basic guidelines in Appendix A, Technical Specifications,”  
and Appendix B, Cables and Connectors,when you plan a network using  
EtherSpeedII switch modules.  
Connecting the EtherSpeedII Switch Modules to Ethernet  
Hubs and Network Devices  
This section provides information on connecting EtherSpeedII switch modules to  
Ethernet hubs and network devices.  
EtherSpeedII 10/100BASE-T Switch Module  
You connect the ports of the EtherSpeedII 10/100BASE-T switch module to the  
front panel, wired as MDI-X connections. This wiring allows you to use a  
straight-through cable between the switch module and the patch panel.  
207344-B  
2-1  
           
Using the Centillion EtherSpeedII Switch Modules  
To connect the ports on the patch panel to another Ethernet switch or an Ethernet  
hub, follow these guidelines:  
Personal computers (PCs) and servers typically have network interface cards  
(NICs) that are configured as MDI connections. To connect these devices, use  
a straight-through cable.  
Hubs and other switches typically have connectors that are configured as  
MDI-X. Some hubs and switches have ports that are set by a toggle switch for  
either MDI or MDI-X operation.  
To connect a port set for MDI to the EtherSpeedII switch module port, use  
a straight-through cable.  
To connect a port set for MDI-X to the EtherSpeedII switch module port,  
use a crossover cable.  
Note: For connector specifications for MDI and MDI-X ports, refer to  
Appendix B, Cables and Connectors.”  
EtherSpeedII 100BASE-FX Switch Module  
You connect the EtherSpeedII 100BASE-FX switch module ports to Ethernet  
hubs and network devices using MT-RJ patch cables as appropriate for your  
cabling environment.  
Note: Because multimode fiber connections do not autonegotiate, the mode of  
the devices at both ends of a link must be identical (HDX or FDX).  
Network Configuration Examples  
The EtherSpeedII 10/100BASE-T switch module and the EtherSpeedII  
100BASE-FX switch module are adaptable switches suitable for use in wiring  
closets or network centers in conjunction with the Centillion 50/100 chassis.  
Figure 2-1 shows an example of the EtherSpeedII switch modules in a sample  
network configuration.  
2-2  
207344-B  
                       
Planning a Network with EtherSpeedII Switch Modules  
This section describes the following Ethernet switching applications:  
Dedicated ports for servers (page 2-4)  
Replacement for a bridge port (page 2-5)  
Desktop switch with ATM uplinks in a wiring closet (page 2-6)  
Segment switch in a wiring closet with ATM uplinks to a network center  
switch (page 2-7)  
Desktop switch and frame-to-cell converter (page 2-8)  
MultiLink Trunking (page 2-9)  
ATM MDA MCP  
Centillion 50 Chassis  
module with  
BayStack 450-FX  
fiber MDAs  
EtherSpeedII  
100 Mb/s  
FDX  
modules  
UTP 10/100 connections  
to users  
Centillion 50 Chassis  
Redundant,  
load-balanced  
risers to closets  
UTP 10/100 connections  
to users  
Network  
Center  
Router  
ATM  
Workgroup  
servers  
A
B
C
ATM  
10/100 Mb/s  
Centillion 100  
Chassis  
Centillion 100  
Chassis  
Redundant,  
network center  
switches  
VLAN D  
Enterprise servers  
9466EB  
Figure 2-1.  
Network Example  
207344-B  
2-3  
     
Using the Centillion EtherSpeedII Switch Modules  
Giving a Server a Dedicated Port  
Moving a server from a 10 Mb/s shared-media connection to a dedicated port  
on the EtherSpeedII 10/100BASE-T switch module or the EtherSpeedII  
100BASE-FX switch module improves server response time and increases  
throughput capacity. For even higher performance, upgrade the server to 100 Mb/  
s and the switch modules can autonegotiate for 100 Mb/s.  
In Figure 2-2, the Beforeexample shows clients and servers sharing the same  
network segment. The Afterexample shows the same clients assigned to  
different segments through a shared hub (either 10/100 Mb/s or directly  
connected) and the original servers connected to switch ports on a Centillion 50  
chassis. In addition, two servers have been added through 10/100 Mb/s  
connections.  
Before  
Servers  
Clients  
Clients  
Segment  
After  
10 Mb/s  
100 Mb/s  
Centillion 50  
Chassis  
ATM MDA MCP  
module  
EtherSpeedII  
modules  
Segment  
Segment  
100 Mb/s  
10 Mb/s  
10 Mb/s  
clients  
10 or 100 Mb/s  
clients  
100 Mb/s  
clients  
Servers  
9467EA  
Figure 2-2.  
Connecting Servers to Dedicated Ports  
2-4  
207344-B  
         
Planning a Network with EtherSpeedII Switch Modules  
Replacing a Bridge  
Using a switch instead of a bridge in the network can increase the aggregate  
network bandwidth. The Afterexample in Figure 2-3 shows one server  
connected to a dedicated 10BASE-T port. It also shows the other server and  
additional clients attached using dedicated 100BASE-TX connections. This  
network configuration allows you to have switched 10 Mb/s Ethernet along with  
segmented 10 Mb/s Ethernet to conserve ports.  
Before  
Servers  
Clients  
Clients  
Segment  
Segment  
Bridge  
After  
10 Mb/s  
100 Mb/s  
Centillion 100  
Chassis  
ATM MDA MCP  
module  
EtherSpeedII  
modules  
Segment  
Segment  
100 Mb/s  
10 Mb/s  
10 Mb/s  
clients  
10 or 100 Mb/s  
clients  
100 Mb/s  
clients  
Servers  
9468EB  
Figure 2-3.  
Replacing a Bridge  
207344-B  
2-5  
         
Using the Centillion EtherSpeedII Switch Modules  
Desktop Switch with ATM Uplinks  
In the example shown in Figure 2-4, the EtherSpeedII 10/100BASE-T switch  
module provides 20 RJ-45 switched Ethernet (10/100 Mb/s) ports to connect to  
desktops, with redundant high-speed ATM OC-3c and OC-12c ports to connect  
to an ATM backbone. This network configuration can support small to large  
wiring closets.  
Figure 2-4 also illustrates a sample network providing ATM uplinks to a  
Centillion 50/100 chassis. Servers are connected to the network through the  
Centillion 50/100 chassis, and network stations are connected to the  
10/100BASE-T ports on the EtherSpeedII 10/100BASE-T switch modules. The  
chassis are dual-homed with ATM OC-3c and OC-12c uplinks to the Centillion  
50/100 chassis and the Model 5000/5005BH chassis. These chassis can be  
interconnected with multiple ATM links.  
ATM Router  
Data Center  
ATM  
Centillion 100 Chassis  
with EtherSpeedII modules  
and ATM MDA MCP  
switch modules  
100 Mb/s  
100 Mb/s  
Servers  
10 Mb/s  
10 Mb/s  
Wiring Closet  
100 Mb/s  
Shared-media  
Model 5000BH  
Chassis  
BayStack  
hubs  
Clients  
9470EA  
Figure 2-4.  
Desktop Switch with ATM Uplinks  
2-6  
207344-B  
           
Planning a Network with EtherSpeedII Switch Modules  
Segment Switch in an Enterprise Network  
To achieve a gradual transition from shared media to switched networks, you can  
use the EtherSpeedII 10/100BASE-T switch module or the EtherSpeedII  
100BASE-FX switch module to aggregate traffic from stations connected to one  
or more hubs. Figure 2-5 shows such a network with switches used to connect  
shared-media hubs to a backbone switch. Stations connected to the EtherSpeedII  
switch module are associated with different segments through the configuration  
switching feature.  
Data Center  
ATM Router  
ATM  
Centillion 100 Chassis  
with EtherSpeedII module  
and ATM MDA MCP  
switch modules  
100 Mb/s  
100 Mb/s  
Servers  
10 Mb/s  
10 Mb/s  
Wiring Closet  
100 Mb/s  
FDX  
Shared-media  
Model 5000BH  
Chassis  
BayStack  
switches  
Clients  
9470EB  
Figure 2-5.  
Segment Switch in an Enterprise Network  
207344-B  
2-7  
           
Using the Centillion EtherSpeedII Switch Modules  
Desktop Switch and Frame-to-Cell Converter  
For wiring closets with higher densities and lower bandwidth requirements, you  
can use the EtherSpeedII 10/100BASE-T switch module to aggregate traffic from  
other stackable switch products such as the BayStack301 and BayStack 350T  
switches (providing frame switching) to an ATM backbone (providing cell  
switching). The stackable switches and the 20 RJ-45 10/100 Mb/s switched  
Ethernet ports on the EtherSpeedII 10/100BASE-T switch module provide  
desktop connectivity.  
Figure 2-7 shows a network with EtherSpeedII 10/100BASE-T switch modules  
used to connect BayStack 301 and BayStack 350T switches to the Centillion 50/  
100 chassis in a data center. The 10/100 Mb/s ports on the EtherSpeedII switch  
module provide high-speed connections to the BayStack switches. The  
EtherSpeedII switch module provides switched 10 Mb/s or 100 Mb/s capability  
for higher-bandwidth desktop connectivity. You can upgrade to 100 Mb/s with a  
client NIC upgrade.  
Data Center  
Centillion 100 Chassis  
Centillion 100 Chassis  
100 Mb/s  
100 Mb/s  
ATM  
Server  
Server  
ATM  
Centillion 100 Chassis  
ATM  
Wiring Closet  
with EtherSpeedII modules  
and ATM MDA MCP  
switch modules  
100 Mb/s  
100 Mb/s  
BayStack 350T  
switches  
BayStack 301  
switch  
350F  
10/100 Autosense Switch  
350F  
10/100 Autosense Switch  
10/100 Mb/s clients  
9471EB  
Figure 2-6.  
Desktop Switch and Frame-to-Cell Converter  
2-8  
207344-B  
         
Planning a Network with EtherSpeedII Switch Modules  
MultiLink Trunking  
MultiLink Trunking (MLT) allows up to four physical connections for the same  
media type and speed to be grouped and treated as a single logical link. MLT  
improves performance between two switches or between a switch and a server.  
Ports in a single MLT group can span multiple modules.  
MLT allows data to be carried over multiple 100 Mb/s full-duplex links connected  
to the same device, thus improving performance. Figure 2-7 shows that  
connecting multiple BayStack 450 ports into an EtherSpeedII 10/100BASE-T  
switch module allows the data load to be shared across multiple ports and multiple  
boards, improving overall performance. The ability to load share across multiple  
ports and multiple boards is commonly referred to as distributed MLT.  
Centillion 100 Chassis  
BayStack 450-24T  
100 Mb/s  
100 Mb/s  
MLT  
connection  
9472EA  
Figure 2-7.  
MultiLink Trunking Example  
207344-B  
2-9  
       
Using the Centillion EtherSpeedII Switch Modules  
Default Port Configuration  
The EtherSpeedII 10/100BASE-T switch module is shipped preconfigured with  
the factory default settings listed in Table 2-1.  
Table 2-1.  
Factory Default Settings for the 10/100BASE-T Switch  
Module  
Parameter  
Factory Default  
Configurable Options  
Switching mode  
Transparent  
Transparent  
None, IEEE  
Enable/Disable  
Enable/Disable  
Auto/10/100  
Auto/HDX/FDX  
2–32  
Spanning Tree Protocol  
Port state  
None  
Enable  
Filters  
Disable (none)  
Port speed  
Auto  
Auto  
2
Connection Mode  
Spanning tree group  
Priority  
128  
10  
0–255  
Path cost  
1–65535  
The EtherSpeedII 100BASE-FX switch module is shipped preconfigured with the  
settings listed in Table 2-2.  
Table 2-2.  
Parameter  
Factory Default Settings for the 100BASE-FX Switch Module  
Factory Default  
Configurable Options  
Switching mode  
Spanning Tree Protocol  
Port state  
Transparent  
Transparent  
None, IEEE  
Enable/Disable  
Enable/Disable  
2–32  
None  
Enable  
Filters  
Disable (none)  
Spanning tree group  
Full/half-duplex setting  
Priority  
2
FDX  
128  
10  
HDX/FDX  
0–255  
Path cost  
1–65535  
2-10  
207344-B  
                                           
Planning a Network with EtherSpeedII Switch Modules  
Predefined SpeedView Configurations  
SpeedView offers several predefined configurations. You may choose one of these  
without configuring individual ports. Predefined configurations are available for  
the following applications:  
All transparent switching with no IEEE 802.1d Spanning Tree support  
All transparent switching with IEEE 802.1d Spanning Tree support  
You must enter additional configuration information if you are using any of the  
following features:  
ATM  
VLANs  
Filtering  
Combinations of bridging modes and Spanning Tree Protocol not offered as  
defaults  
Instructions for using these features are available in Using SpeedView 4.2 for  
Windows and Release Notes for the Centillion Platform Release 4.1.2.  
207344-B  
2-11  
   
Chapter 3  
Installing the EtherSpeedII Switch Modules  
This chapter explains how to install and connect the EtherSpeedII 10/100BASE-T  
switch module or the EtherSpeedII 100BASE-FX switch module, and includes the  
following information and procedures:  
Preparing for installation (this page)  
Installing a switch module (page 3-2)  
Checking LEDs to verify the installation (page 3-6)  
Connecting cables to Model # ports (page 3-8)  
Removing a switch module (page 3-8)  
Preparing for Installation  
Before you install the EtherSpeedII 10/100BASE-T switch module or the  
EtherSpeedII 100BASE-FX switch module, make sure that the Centillion 50/100  
chassis is assembled and ready to accept modules. For more information, refer to  
Installation and Reference for the Centillion 50 and 100 Chassis.  
You need the following tools and materials for installation:  
Medium flat-tip screwdriver for the captive retaining screws  
Grounded antistatic mat and wrist strap  
207344-B  
3-1  
     
Using the Centillion EtherSpeedII Switch Modules  
Safety  
Always follow static electricity and other safety guidelines when handling  
EtherSpeedII switch modules.  
Caution: Centillion equipment uses electronic components that are sensitive to  
static electricity. Static discharge from your clothing or other fixtures around  
you can cause damage. Take all possible precautions to prevent static discharge  
damage when working with printed circuit boards.  
Place each module on a grounded antistatic mat until you are ready to install  
the module. If you do not have an antistatic mat, wear a wrist strap or  
discharge leash to free yourself of static before touching any of the modules, or  
free yourself of static by touching the metal chassis before handling the module.  
Installing a Switch Module  
You can insert or remove a 10/100BASE-T switch module or a 100BASE-FX  
switch module from a chassis while the power is on without interrupting service in  
the other modules. This ability is referred to as hot-swapping.”  
Note: EtherSpeedII switch modules can be hot-swapped in and out of a chassis  
at any time. However, before removing an active module from the Centillion  
50/100 chassis, either unplug all port cables or disable all ports on the module.  
This step deactivates the module. For additional information, see Removing a  
Moduleon page 3-8.  
3-2  
207344-B  
       
Installing the EtherSpeedII Switch Modules  
To install and secure the module in the chassis:  
1. Remove the filler panel.  
Using the medium flat-tip screwdriver, loosen the two captive retaining  
screws on the filler panel until they pop free of the chassis. Rotate the left and  
right inserter/extractor levers away from the center of the filler panel to their  
protruding positions and remove the filler panel (Figure 3-1).  
6463  
Figure 3-1.  
Removing the Filler Panel  
2. Make sure the module inserter/extractor levers are protruding forward  
(Figure 3-2).  
6464  
Figure 3-2.  
Inserter/Extractor Levers Ready for Installation  
207344-B  
3-3  
         
Using the Centillion EtherSpeedII Switch Modules  
3. Align the left and right edges of the module in the guides on each side of  
the slot (Figure 3-3).  
6465  
Figure 3-3.  
4. Slide the module into the chassis until you feel it engage the backplane.  
The inserter/extractor levers should still be protruding and in contact  
with the front of the chassis. Do not push the module all the way into the  
chassis (Figure 3-4).  
6466  
Figure 3-4.  
Inserting the Module Until It Engages the Backplane  
3-4  
207344-B  
       
Installing the EtherSpeedII Switch Modules  
5. To seat the module onto the backplane, push the inserter/extractor levers  
inward toward the module (Figure 3-5).  
6537FA  
Figure 3-5.  
Seating the Module  
When the front panel of the module is flush with the front of the chassis, the  
module backplane connectors are properly seated.  
6. Use the flat-tip screwdriver to tighten the captive retaining screw at each  
end of the module front panel.  
Note: The captive retaining screws on the module must be tightened to at least  
2 inch-pounds, but no more than 4 inch-pounds, of torque. Finger tightening is  
also adequate. Do not overtighten.  
207344-B  
3-5  
   
Using the Centillion EtherSpeedII Switch Modules  
Checking LEDs on the Switch Modules  
If an EtherSpeedII 10/100BASE-T switch module is installed correctly, upon  
power-up, all of the LEDs on the front panel light in a sequential pattern. As you  
connect devices to the switch modules ports, watch the LEDs on the front panel  
(Figure 3-6). An established link displays the following LED color sequence:  
The LINK LED lights green for each port showing link status.  
The 10/100 LEDs lights green when you have a 100 Mb/s Ethernet  
connection and is off (no light) when you have a 10 Mb/s connection.  
The 10/100 LED lights amber if a line error is detected. Line errors may be  
one or more CRC errors, data alignment errors, or frames that are too long.  
LEDs  
20 10/100BASE-T ports  
(RJ-45)  
LINK 10/100  
9458FA  
Figure 3-6.  
LED Display for the 10/100BASE-T switch module  
3-6  
207344-B  
       
Installing the EtherSpeedII Switch Modules  
If an EtherSpeedII 100BASE-FX switch module is installed correctly, upon  
power-up, all of the LEDs on the front panel light in a sequential pattern. As you  
connect devices to the switch modules ports, watch the LEDs on the front panel  
(Figure 3-7).  
The LINK LED lights green for each port for which a link is established.  
The ERROR LED lights amber if a line error is detected. Line errors may be  
one or more CRC errors, data alignment errors, or frames that are too long.  
LEDs  
16 100BASE-FX  
ports (MT-RJ)  
LINK ERROR  
Figure 3-7.  
LED Display for the EtherSpeedII 100BASE-FX Switch  
Module  
Note: See Appendix C, LED Displays on the EtherSpeedII Switch Modules,”  
for a complete description of LED displays for the EtherSpeedII 10/100BASE-T  
and the EtherSpeedII 100BASE-FX switch modules.  
207344-B  
3-7  
   
Using the Centillion EtherSpeedII Switch Modules  
Making 10/100 Mb/s Cable Connections  
The 10/100 Mb/s jacks on the EtherSpeedII 10/100BASE-T switch module accept  
standard UTP or STP cable connections.  
To connect network devices to the 10/100 Mb/s ports on the switch module,  
follow these guidelines:  
Use Category 3 or 5 UTP cable or STP cable with RJ-45 connectors for the  
ports on the switch module.  
Use straight-through cables to connect the network interface card (NIC) in a  
PC workstation or server. These devices typically have MDI connectors.  
Use a crossover cable to connect to ports configured as MDI-X (such as  
Ethernet hubs).  
Note: For more information about cables, connectors, and connector pin  
assignments, see Appendix B, Cables and Connectors.”  
Removing a Module  
You can hot-swap a 10/100BASE-T switch module or a 100BASE-FX switch  
module at any time. However, to remove an active module from the Centillion 50/  
100 chassis:  
1. Disable all ports on the module using SpeedView, or disconnect the cables  
from each port.  
Disabling the ports on a module is described in Using SpeedView 4.2 for  
Windows.  
Note: If the power for the Centillion 50/100 chassis is off, this step is not  
necessary.  
3-8  
207344-B  
                   
Installing the EtherSpeedII Switch Modules  
2. Wait 45 seconds.  
Waiting allows the system software to process the requests to disable the ports.  
Caution: If you remove a module without waiting 45 seconds after disabling  
the ports, you must power cycle the Centillion 50/100 chassis. When you turn  
off the power on the chassis, you must wait 15 to 20 seconds before turning  
the power back on. The switch modules begin switching an additional 15 to 20  
seconds after power is resumed.  
3. Using the medium flat-tip screwdriver, loosen the two captive retaining  
screws on the module until they pop free of the chassis.  
4. Rotate the left and right inserter/extractor levers away from the center of  
the module to their protruding positions (Figure 3-8).  
The module is disengaged from the backplane.  
6470  
Figure 3-8.  
Disengaging the Module  
207344-B  
3-9  
   
Using the Centillion EtherSpeedII Switch Modules  
5. Slide the switch module out of the chassis (Figure 3-9).  
Hold the front panel with one hand while you support the bottom of the switch  
module with the other hand.  
6471  
Figure 3-9.  
Removing the Module from the Centillion 50/100 Chassis  
6. Place the switch module on an antistatic mat until you are ready to put it  
back into the chassis.  
7. If you are not installing another switch module of the same model, install  
Installing the Replacement Switch Module  
To install the replacement switch module, follow the procedure described in  
Installing a Switch Moduleon page 3-2.  
The EtherSpeedII 10/100BASE-T and the EtherSpeedII 100BASE-FX switch  
modules keep the configuration of an identical replacement module. If the  
replacement is not of the same model type, you must reconfigure the module after  
it is replaced. Follow the procedure described in Checking LEDs on the Switch  
Moduleson page 3-2.  
3-10  
207344-B  
             
Chapter 4  
Troubleshooting  
This chapter provides suggestions for troubleshooting problems with the  
EtherSpeedII 10/100BASE-T switch module or the EtherSpeedII 100BASE-FX  
switch module and includes the following topics:  
EtherSpeedII switch module startup failure (page 4-2)  
Port connection problems (page 4-3)  
To expedite support if you call Nortel Networks, have the following information  
ready:  
Hardware configuration  
Software configuration (including the image file version number and  
SpeedView version number)  
Network diagram  
Module or switch part number and serial number for the suspected module  
Brief description of the problem  
207344-B  
4-1  
     
Using the Centillion EtherSpeedII Switch Modules  
EtherSpeedII Switch Module Startup Failure  
Symptom: All LEDs are solidly lit (do not blink) on the switch module.  
To resolve the problem:  
1. Ensure that an MCP module is present and operational with the  
appropriate version of software.  
The EtherSpeedII 10/100BASE-T switch module requires version  
4.1.2 software or greater.  
The EtherSpeedII 100BASE-FX switch module requires version  
4.2.1 software or greater.  
2. Ensure that all modules in the chassis are firmly seated and that the  
retaining screws have been tightened.  
3. Remove and reinsert the failing module.  
If the problem persists, contact the nearest Nortel Networks Technical  
Solutions Center.  
4-2  
207344-B  
       
Troubleshooting  
Port Connection Problems  
Symptom: The LED on a switch port is off.  
If an LED does not light when traffic is present, there may be a port connection  
problem.  
To resolve the problem:  
1. Verify whether or not the port is enabled, using SpeedView or the CLI.  
a. From the Map window in SpeedView, choose Switch and then choose  
Configure.  
When the configuration information has been downloaded to the  
management station, check the port state. The port state should be either  
enabled or disabled.  
b. From the Map window, choose Statistics.  
When the statistics information has been downloaded to the management  
station, check the port state. If the port state is Down, the port is receiving  
no link signal or is disabled.  
c. From a configuration terminal connected to the serial port on the  
switch, access the CLI.  
Use the show port command and specify the module number and port  
number for the suspected port. When the port information is displayed,  
verify that port_state is up and that the SPT state is forwarding.  
2. Verify that the cable is correctly connected at both ends of the link.  
Disconnect and reseat the cable at the switch module port, at the patch panel  
or punchdown block, and at the device to which the link is attached. Check  
the port LED for a change in status.  
207344-B  
4-3  
       
Using the Centillion EtherSpeedII Switch Modules  
3. Verify that the port is transmitting and receiving data frames.  
a. Check the green RJ-45 LED, which indicates a data exchange.  
Refer to Appendix C, LED Displays on the EtherSpeedII Switch  
Modules,for additional information.  
b. From the Map window in SpeedView, choose Statistics.  
When the statistics information is displayed at the management station,  
verify that the octet counts for transmit and receive are incrementing.  
Also verify that the frame counts for transmit and receive unicast traffic  
and for multicast traffic are incrementing.  
c. From a configuration terminal connected to the serial port on the  
switch, access the CLI.  
Use the show port command and specify the module number and port  
number for the suspected port. Verify that the following counters are  
incrementing:  
InOctet  
OutOctet  
InUcastPkt  
OutUcastPkt  
MulticastTransmittedOk  
MulticastReceivedOk  
BroadcastTransmittedOk  
BroadcastReceivedOk  
4. If the port still fails, try inserting it into another switch network or  
shared segment.  
If the port functions correctly, check the status of the first switch network or  
shared segment.  
If the port fails to function, contact the nearest Nortel Networks Technical  
Solutions Center. Be ready to give the service representative the information  
listed on page 4-1.  
4-4  
207344-B  
Appendix A  
Technical Specifications  
This appendix provides technical specifications for the EtherSpeedII switch  
modules. For connector pin assignments and other information about cables,  
see Appendix B, Cables and Connectors.”  
Industry Protocols  
and Standards  
ISO/IEC 8802-3 (ANSI/IEEE 802.3) Fifth Edition  
1996-07-29  
Clause 4: Medium Access Control  
Clause 14: Twisted-Pair Medium Attachment Unit (MAU)  
and Baseband Medium Type 10BASE-T  
IEEE Std. 802.3u-1995, Media Access Control (MAC)  
Parameters, Physical Layer, Medium Attachment Units,  
and Repeater for 100 Mb/s Operation, Type 100BASE-T  
(Clauses 2130)  
Interface Options  
Data Rates  
EtherSpeedII 10/100BASE-T switch module:  
RJ-45 copper, twisted-pair connectors (8-pin modular)  
EtherSpeedII 100BASE-FX switch module:  
MT-RJ fiber-optic connectors  
EtherSpeedII 10/100BASE-T switch module:  
10/100 Mb/s switched Ethernet  
EtherSpeedII 100BASE-FX switch module:  
100 Mb/s switched Ethernet  
Autonegotiating Features EtherSpeedII 10/100BASE-T switch module:  
10/100 Mb/s speed autonegotiation  
Microprocessor  
64-bit MIPS 5000 series processor, 200 MHz per module  
207344-B  
A-1  
               
Using the Centillion EtherSpeedII Switch Modules  
Memory  
Processing  
8 MB  
Dynamically Allocated  
Buffer Pool  
16 MB  
CAM (Content Addressable 8,192 entries  
Memory)  
Electrical Specifications  
Power Consumption  
Thermal Rating  
52 W (max)  
194.5 BTU/hr (max)  
Physical Specifications  
Dimensions  
(L) 10.5 in. x (W) 12.25 in. x (H) 1.0 in.  
[(L) 26.7 cm x (W) 31.7 cm x (H) 2.5 cm  
Module alone: 2.5 lbs (1.1 kg)  
Weight  
Environmental  
Specifications  
Operating Temperature  
Storage Temperature  
Operating Humidity  
Storage Humidity  
Operating Altitude  
Free Fall/Drop  
5° to 40° C (ambient)  
-25° to 70° C (ambient)  
85% maximum relative humidity, noncondensing  
95% maximum relative humidity, noncondensing  
10,000 ft (3,000 m) max  
ISO 4180-s, NSTA 1A  
Vibration  
IEC 68-2-6/34  
Shock/Bump  
IEC 68-2-27-29  
Electromagnetic  
Emissions  
Meets requirements of:  
FCC Part 15, Subpart B, Class A  
EN 55 022 (CISPR 22:1985), Class A  
VCCI Class 1 ITE  
Electromagnetic  
Susceptibility  
Electrostatic Discharge  
(ESD)  
EC 801-2, Level 2  
Radiated Electromagnetic  
Field  
EC 801-2, Level 2, EC 801-4, Level 2  
Electrical Fast Transient  
Burst  
Electrical Surge  
IEC 801-5, Levels 1 and 2  
Complies with EN 50082-1 (European CE mark  
requirements)  
Safety Agency Approvals International Electrical Code of 950 (IEC 950)  
Underwriters Laboratories (UL 1950)  
Canadian Standards Association (C22.2 No. 950) or  
Bi-national Standard (UL1950 and C22.2 No. 950)  
equivalent to UL and cUL  
European Union (EN60950)  
Norma Oficial Mexicana (NOM-19-SCFI)  
Meets UL-94-V1 (PWB) flammability requirements  
A-2  
207344-B  
           
Technical Specifications  
Mean Time Between  
Failure (MTBF)  
177,000 hours  
Cabling Specifications  
EtherSpeedII 10/100BASE-T switch module:  
Types: Category 3 or 5 unshielded twisted pair (UTP)  
or shielded twisted pair (STP)  
Note: You can use Category 3 UTP cable only for 10 Mb/s  
port operation, not for 100 Mb/s or 10/100 Mb/s  
autonegotiating port operation where the negotiated rate  
may be 100 Mb/s.  
-Maximum Length: 100 meters (cable plant and patch —  
cables inclusive)  
-Connector Types: Shielded RJ-45 connectors  
EtherSpeedII 100BASE-FX switch module:  
MT-RJ to SC: Nortel Networks Part No. AA0018032  
MT-RJ to ST: Nortel Networks Part No. AA0018033  
MT-RJ to MT-RJ: Nortel Networks Part No.  
AA0018034  
*See the disclaimer on page ii of this manual.  
207344-B  
A-3  
   
Appendix B  
Cables and Connectors  
This appendix provides general information about 10BASE-T and 100BASE-TX  
cabling and connections.  
UTP Cable Length Limitations  
All 10BASE-T/100BASE-T ports on EtherSpeedII switch modules support the  
maximum lengths for twisted pair cable that are specified in the IEEE 802.3  
10BASE-T/100BASE-TX Ethernet specification. This specification defines the  
maximum segment length in terms of the performance characteristics of the cable  
media, which can vary according to cable type. In most networks, cable runs are  
less than 100 meters (m) to ensure that data is not distorted or lost.  
For UTP links of #24 AWG cable between a network interface (transceiver or  
10BASE-T/100BASE-TX network interface card) and a hub or between hubs,  
these performance specifications are normally met by a cable run of 100 m  
(330 ft.) or less, including any patch cables and cross-connect cables. The  
10BASE-T/100BASE-TX standard specifies this length as a design objective.  
The EtherSpeedII switch module is designed to support a maximum cable length  
of 100 m.  
Your cable plant can contain Category 3 or 5 UTP cables, up to a maximum length  
of 100 m between the end station and the switch module. Use an appropriate patch  
cable to connect your cable to this module.  
207344-B  
B-1  
         
Using the Centillion EtherSpeedII Switch Modules  
UTP Cabling  
A 10BASE-T/100BASE-TX connection between two ports requires two twisted  
pairs. The transmit data (TD) pair carries data out from the port transmitter.  
The receive data (RD) pair carries data in to the port receiver.  
The 10BASE-T/100BASE-TX TD and RD circuits must be connected as follows:  
Individual conductors must provide pin-to-pin continuity (TD+ to RD+,  
TD- to RD-, and so on) between the EtherSpeedII switch module port and the  
attached MDI port on a transceiver or other network interface.  
Each signal circuit must use a single twisted pair throughout the link.  
Standard Ethernet patch panels and cables provide the previous features.  
10BASE-T/100BASE-TX MDI Ports and MDI-X Ports  
In the 10BASE-T/100BASE-TX standard, MDI is the electrical and mechanical  
interface specified for the 10BASE-T/100BASE-TX transceiver or network  
interface card connector (for example, on the station at the end of a link).  
MDI port pins 1 and 2 carry the transmit (TD) signal, and pins 3 and 6 carry the  
receive (RD) signal as shown in Figure B-1.  
1
2
1
2
Transmit  
Receive  
Transmit  
Receive  
Twisted pairs  
3
3
6
6
MDI port network  
interface card or  
transceiver port  
Host module MDI-X port  
(transmit and receive  
connections reversed)  
9729EA  
Figure B-1.  
MDI-X Internal Crossover (RJ-45 Example)  
B-2  
207344-B  
           
Cables and Connectors  
The switch module receives data on pins 1 and 2 and transmits its data on pins  
3 and 6. The host module ports implement this MDI standard crossover internally  
and are called MDI-X (the X for crossover), as shown in Figure B-1. All  
EtherSpeedII switch module 10BASE-T ports are MDI-X standard.  
Two simple rules govern all usual RJ-45 connections from each switch module  
10BASE-T/100BASE-TX port to the 10BASE-T/100BASE-TX port on another  
device:  
A straight-through cable (MDI to MDI-X) is customarily used for connection  
to a station NIC, to a transceiver, or to a cable plant patch panel.  
A crossover cable or adapter (MDI-X to MDI-X; as shown in Figure B-2) is  
customarily used for connection to another switch or hub port.  
Twisted  
pairs  
1
2
1
2
Receive  
Transmit  
Receive  
3
6
3
6
Transmit  
MDI-X port  
MDI-X port  
Figure B-2.  
MDI-X to MDI-X External Crossover (RJ-45 Example)  
Making the crossover externally with a crossover cable or adapter that exchanges  
the TD and RD wire pairs (as shown in Figure B-2) is possible but has the  
following disadvantages:  
A crossover cable is not standard. You may need to special order one or make  
your own.  
Crossover cables and standard cables that resemble one another in a network  
can cause confusion.  
Caution: Make any crossover cable you use look obviously different from  
normal straight-through cables and put a tag on each end; for example, use a  
distinctive color like yellow and put a tag labeled X-overon each end.  
207344-B  
B-3  
         
Using the Centillion EtherSpeedII Switch Modules  
Figure B-3 illustrates an MT-RJ connector.  
9721FA  
Figure B-3.  
MT-RJ Connector  
Table B-1 lists the optical specifications for multimode fiber.  
Table B-1.  
Optical Specifications for Multimode Fiber Optic Cable  
Specification  
Description  
Fiber Type  
Duplex 62.5/125-micron fiber  
Connector type  
Link budget  
MT-RJ  
6 dB  
Maximum run length in full-duplex mode  
Maximum run length in half-duplex mode  
2000 meters  
412 meters  
Table B-2 lists the specifications for multimode fiber.  
Table B-2.  
Specifications for Multimode Fiber Optic Transceivers  
Description  
Specification  
LED  
1310 nm  
Fiber Type  
Duplex 62.5/125-micron fiber  
-20 to -14 dBm  
-26 dBm  
Mean launched power  
Minimum receive sensitivity  
B-4  
207344-B  
           
Cables and Connectors  
UTP Cables and Connectors  
Table B-3 shows the pin assignments for 10BASE-T/100BASE-TX ports in the  
standard MDI-X configuration.  
Table B-3.  
10BASE-T/100BASE-TX MDI-X Port Pin Assignments  
RJ-45 Connector Port  
Pin #  
MDI-X Ports  
1
2
3
4
5
6
7
8
Receive data +  
Receive data –  
Transmit data +  
Not used  
Not used  
1 2 3 4 5 6 7 8  
Transmit data –  
Not used  
Not used  
Figure B-4 shows a 10BASE-T/100BASE-TX Ethernet UTP crossover cable used  
to connect an Ethernet hub directly to the EtherSpeedII switch module.  
RD+  
RD-  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
RD+  
RD-  
TD+  
TD+  
Unused  
Unused  
TD-  
Unused  
Unused  
TD-  
Unused  
Unused  
Unused  
Unused  
6740.2  
Figure B-4.  
10BASE-T/100BASE-TX Ethernet UTP Crossover Cable  
207344-B  
B-5  
             
Using the Centillion EtherSpeedII Switch Modules  
Pin 1 crosses to pin 3, and pin 2 crosses to pin 6. To build this cable, you must  
cross pairs. The pairs are listed in Table B-4, with an example of the color  
combinations found in two typical cables.  
Table B-4.  
Pairs  
Pairs in an RJ-45 Crossover Cable  
Example 1  
Example 2  
Color Combinations  
Color Combinations  
1 and 2  
3 and 6  
4 and 5  
7 and 8  
Orange/white and white/orange  
Green/white and white/green  
Blue/white and white/blue  
Orange and blue  
Yellow and black  
Red and green  
Brown and gray  
Brown/white and white/brown  
Using Category 5 Unshielded Twisted Pair Cables  
Unshielded twisted pair (UTP) cable is the recommended wiring option for  
100BASE-TX Fast Ethernet, as specified in the IEEE 802.3 standard for Ethernet.  
Fast Ethernet recommended UTP cable consists of four pairs of twisted insulated  
copper conductors bound in a single plastic sheath. The 100BASE-TX Fast  
Ethernet transmissions are implemented through two-pair or four-pair Category 5  
UTP wiring using standard shielded RJ-45 connectors. Category 5 cable is  
certified to handle up to 100 MHz bandwidth. The EIA/TIA T568A standard  
recommends the installation of Category 5 UTP cable for 100 Mb/s networks.  
Use the following guidelines to ensure that your cables perform to specifications:  
CertificationMake sure that your Category 5 UTP cable has completed the  
Underwriters Laboratories (UL) or Electronic Testing Laboratories (ETL)  
certification process.  
Terminating methodTo minimize crosstalk noise, maintain the twist ratio of  
the cable up to the point of termination (untwist at any termination should not  
exceed 0.5 in.).  
Pairing optionsFor optimal performance from your cable plant, use the  
EIA-T568A Commercial Building Wiring Standard pairing option at each end  
of the cable. The terminating hardware offered by most major manufacturers  
is correctly color-coded for proper wire placement according to that standard.  
B-6  
207344-B  
             
Cables and Connectors  
Using Shielded Twisted Pair Cables  
Type 1 shielded twisted pair (STP) cabling also operates with 10BASE-T Ethernet  
and 100BASE-TX Fast Ethernet. Type 1 STP cable consists of tinned-copper  
braided shield surrounding two data-grade twisted pairs of #22 AWG solid copper  
conductors that have individual or S-shaped shields of aluminum-backed  
insulating tape or metallized Mylar foil.  
Note: A balanced unbalanced (balun) media adapter is required when  
connecting 100-ohm RJ-45 100BASE-TX ports to a 150-ohm STP cable plant.  
This adapter provides impedance matching between UTP (100-ohm) and STP  
(150-ohm) cabling.  
Type 1 cable generally is used between wiring closets or from the wiring closet  
patch panel to the work area wall outlet.  
Type 1 cable generally is terminated with an IBM four-position data connector.  
Nortel Networks Fast Ethernet supports 100BASE-TX Fast Ethernet over STP  
media through the application of a specialized balun media adapter, also referred  
to as a Type 1 balun (Figure B-5). When adapting 150-ohm STP cable plants for  
Fast Ethernet applications, balun media adapters are required at both the hub and  
station ends of the STP cable plant. Media adapters (such as AMP part number  
558421-1) are available that plug into the RJ-45 patch cable connectors, allowing  
the patch cable to connect with an IBM data connector. The media adapter and  
patch cable provide impedance matching between UTP (100-ohm) and STP  
(150-ohm) cabling.  
6737  
Figure B-5.  
Fast Ethernet Type 1 Balun Media Adapter  
Note: For additional information about AMP Type 1 balun media adapters  
(part number 558421-1), contact your AMP reseller or distributor. The user  
should verify that the combination of the STP cable plant and the impedance-  
matching baluns meets the requirements of the applicable LAN standard.  
207344-B  
B-7  
           
Appendix C  
LED Displays on the  
EtherSpeedII Switch Modules  
This appendix describes the LED displays for the Centillion EtherSpeedII 10/  
100BASE-T 20-Port switch module and the Centillion EtherSpeedII  
100BASE-FX 16-Port switch module.  
The EtherSpeedII 10/100BASE-T switch module LED display (Figure C-1)  
consists of two LEDs for each port. The LEDs indicate specific operating status.  
LEDs  
20 10/100BASE-T ports  
(RJ-45)  
LINK 10/100  
9458FA  
Figure C-1.  
LED Display for the EtherSpeedII 10/100BASE-T Switch  
Module  
207344-B  
C-1  
         
Using the Centillion EtherSpeedII Switch Modules  
Table C-1 describes the operating conditions that cause the LEDs to light on the  
switch module.  
Table C-1.  
LEDs on the EtherSpeedII 10/100BASE-T Switch Module  
Label  
Color/Status Meaning  
LINK (port status)  
Green  
Yellow  
Off  
Link present  
TX/RX activity  
No link established  
Port operating at 10 Mb/s  
Port operating at 100 Mb/s  
Line error  
10/100 (port speed) Off  
Green  
Amber  
The port speed LED illuminates amber for  
the following reasons:  
Frame too long  
CRC errors  
Alignment errors  
Transmit and receive collisions (HDX mode)  
C-2  
207344-B  
   
LED Displays on the EtherSpeedII Switch Modules  
The EtherSpeedII 100BASE-FX switch module LED display (Figure C-2)  
consists of two LEDs for each port. The LEDs indicate specific operating status.  
LEDs  
16 100BASE-FX  
ports (MT-RJ)  
LINK ERROR  
9458FB  
Figure C-2.  
MT-RJ LEDs for the EtherSpeedII 100BASE-FX Switch  
Module  
207344-B  
C-3  
     
Using the Centillion EtherSpeedII Switch Modules  
Table C-2 describes the operating conditions that cause the LEDs to light on the  
switch module.  
Table C-2.  
LEDs on the EtherSpeedII 100BASE-FX Switch Module  
Label  
Color/Status Meaning  
LINK (port status)  
Green  
Yellow  
Off  
Link present  
TX/RX activity  
No link established  
Line error  
ERROR  
Amber  
This port speed LED illuminates amber for the  
following reasons:  
Frame too long  
CRC errors  
Alignment errors  
Transmit and receive collisions (HDX mode)  
C-4  
207344-B  
   
Index  
port priority parameters, 2-10  
port state parameters, 2-10  
removing, 3-8  
STP parameters, 2-10  
features, 1-2  
switching mode parameters, 2-10  
technical specifications, A-1  
802.1d standard, 1-9  
802.1Q tags, 1-3  
A
ATM uplinks, 2-6  
autonegotiation  
features, 1-2, A-1  
ports, 1-10  
software requirements, 4-2  
B
backbone switch, 2-7  
features, 1-2  
C
cable  
10BASE-T Ethernet UTP crossover, 3-8  
Category 3 UTP, 3-8  
LAN performance, 2-1  
Category 5 UTP, 3-8, B-6  
connecting to EtherSpeed ports, 3-8  
crossover, 2-2, B-3, B-6  
EIA/TIA-T568A cable standard, B-6  
length limits, B-1  
RJ-45 crossover, B-6  
STP, B-7  
STP (shielded twisted pair), 3-8  
straight-through, 2-2, B-3  
LEDs, 1-6, C-4  
network configuration examples, 2-2  
path cost parameters, 2-10  
physical configuration, 2-2  
physical description, 1-5  
207344-B  
Index-1  
technical specifications, A-3  
Type 1, B-7  
UTP, B-2, B-6  
Ethernet hubs, connecting to, 2-1  
EtherSpeedII ports connection problems, 4-3  
cable length limitations, B-1  
Category 3 UTP cable  
connecting with, 3-8  
F
factory default settings  
CLI, 1-8, 4-3  
features  
100BASE-FX 16-port switch module, 1-2  
configuration  
ATM uplinks, 2-6  
filter parameters  
frame-to-cell converter, 2-8  
SpeedView, 1-1, 1-7  
10/100BASE-T 20-port switch module, 2-10  
filtering, 1-9  
H
hot-swapping, 1-10, 3-2, 3-8, 3-10  
connections  
problem, 4-3  
to servers, 2-4  
hubs, Ethernet  
module, 2-2  
connectors  
MT-RJ, B-4  
I
Industry Protocols and Standards, A-1  
installation  
tools and materials, 3-1  
verifying, 3-6  
D
data rates, A-1  
dedicated ports, 2-4  
interface options, A-1  
L
E
electrical specifications, A-2  
LEDs  
10/100BASE-T 20-port switch module, 1-6  
100BASE-FX 16-port switch module, 1-6  
annunciator, C-1, C-3  
description, C-2, C-4  
matrix illustration, C-1, C-3  
verifying installation, 3-6  
electromagnetic emissions requirements, A-2  
electromagnetic susceptibility, A-2  
enterprise network, segment switch in, 2-7  
environmental specifications, A-2  
Index-2  
207344-B  
M
configured as MDI connections, 2-2  
connecting to, 3-8  
MCP  
network management software  
Optivity, 1-8  
media adapters, B-7  
SpeedView, 1-7  
O
Optivity, configuring with, 1-8  
MIB, 1-8  
P
MLT, 2-9  
path cost parameters  
modules  
installing, 3-3, 3-10  
reconfiguring, 3-10  
10/100BASE-T 20-port switch module, 2-1  
physical description  
MPOA (Multi-Protocol Over ATM), 1-3  
MT-RJ connectors, B-4  
10/100BASE-T 20-port switch module, 1-4  
100BASE-FX 16-port switch module, 1-5  
multimode fiber  
pin assignments  
port  
N
connections, 1-10  
dedicated, 2-4  
full/half-duplex settings, 2-10  
MDI, B-2  
frame-to-cell converter, 2-8  
MDI-X, 2-2, B-2, B-5  
network example, 2-3  
replacing a bridge, 2-5  
segment switch, 2-7  
10/100BASE-T 20-port switch module, 2-10  
network devices  
port state parameters  
connecting the 10/100BASE-T 20-port switch  
module, 2-2  
10/100BASE-T 20-port switch module, 2-10  
100BASE-FX 16-port switch module, 2-10  
connecting the 100BASE-FX 16-port switch  
module, 2-2  
product support, xvii  
207344-B  
Index-3  
publications  
hard copy, xvi  
related, xvi  
stackable switches, 2-8  
STP (shielded twisted pair) cable  
guidelines, B-7  
STP cable  
R
removal, 3-8  
support, Nortel Networks, xvii  
RFC 1213, 1-8  
RJ-45 crossover cable, B-6  
switch module  
physical specifications, A-2  
port connection problems, 4-3  
S
safety agency approval, A-2  
segment switch, 2-7  
10/100BASE-T 20-port switch module, 2-10  
server  
improving response time, 2-4  
T
technical publications, xvi  
technical specifications, A-1  
software requirements  
10/100BASE-T 20-port switch module, 4-2  
U
URL  
Adobe Systems, xvi  
Spanning Tree Protocol  
support, 1-9  
B-6  
V
specifications, technical, A-1  
SpeedView  
VLANs  
configuring with, 1-7  
predefined configurations, 2-11  
using for troubleshooting, 4-3  
description, 1-9  
protocol-based, 1-3  
support for, 1-9  
Index-4  
207344-B  

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