3Com

F I R S T F L O O R

S E C O N D F L O O R

T H I R D F L O O R

3C16671

STATUS

UNIT

LinkBuilder FMS II

LinkBuilder FMS II Telco

3C1667-2

LinkBuilder FMS II

3C16670

STATUS

UNIT

LinkBuilder FMS II

3C16665

STATUS

UNIT

3C16671

STATUS

UNIT

LinkBuilder

FMS II

LinkBuilder HubConfigurationGuide

21 LinkBuilder Hub Configuration Guide

Table of Contents

Decision Tree for 3Com LinkBuilder Hubs 2

3Com Connectivity Solutions

Solution 1: Managed Ethernet Connectivity 4

Solution 2: Managed Token Ring Connectivity 6

Solution 3: Building a Resilient Network 8

Solution 4: Bridging and LAN Segmentation 10

Solution 5: LAN Switching and High-Speed Connectivity 12

LinkBuilder MSH Multi-Services Hub 14

LinkBuilder FMS II Stackable Ethernet Hubs 16

LinkBuilder FMS TR Stackable Token Ring Hubs 18

Fixed-Port Hubs, Repeaters, and Accessories 19

Intelligent Switches 21

Quick Reference Guide to 3Com Switching Products 22

Transcend Network Management 24

LinkBuilder Hub Configuration Guide 1

About This Guide

Whatever your networking environment, 3Com has a hub solution to meet your

needs. Our versatile multi-services hubs let you mix LAN technologies, wiring

types, and configurations in a single chassis, allocating bandwidth to fit the needs

of individual users and groups. Stackable Ethernet and Token Ring hubs give you

flexible, cost-effective, fault-tolerant solutions that grow with your network. Plus,

there are fixed-port repeatersboth unmanaged and intelligentto suit every

need. And every 3Com LinkBuilder hub is backed by our outstanding quality,

service, and support.

SmartAgent intelligent management agents in 3Com hubs gather and correlate

information, keeping management traffic to a minimum while eliminating manual

polling. Combined with 3Coms Transcend management applications, these

SmartAgent software agents provide integrated management of adapters, hubs, and

a wide range of other network devices. 3Coms LinkBuilder hub family is part of

our High-Performance Scalable Networking (HPSN) architecture, providing pow-erful, versatile system solutions that let you scale the performance and extend the

reach of your network.

This guide introduces 3Coms LinkBuilder hubs. Youll find network solutions that

illustrate how 3Com hubs can provide connectivity in a wide range of floor distri-

bution environments. And theres a detailed description of each hub, including its

modules and accessories. Youll also find an overview of 3Coms leading edge

switching products, which can provide a dramatic performance boost in virtually

any network.


Small LAN or workgroup where future expansion is not required (up to 50 users)

Medium- to large-sized LAN where expansion is likely (more than 50 users)

Remote office connected via a NETBuilder bridge/router

High-performance/high-traffic switched LAN or workgroup

No

No

Yes

YesandNo

Yes

Yes

No

No

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

Yes

Yes

Yes

No

No

No

Yes

Yes

Yes

No

Yes

LinkBuilder TP/83C16180

LinkBuilder TP/123C16170

LinkBuilder TP/8i3C16181

LinkBuilder FMS II3C16670 (12-port TP)3C16671 (24-port TP)3C16665 (6-port Fiber)3C16672 (24-port Telco)LinkBuilder FMS3C1625-0 (10-port Coaxial)

LinkBuilder FMS TR3C510500 (12-port)

3C510501 (24-port)

LinkBuilder MSH3C18040 (Chassis)

LinkBuilder TP/83C16180LinkBuilder TP/123C16170LinkBuilder TP/8i3C16181

LinkBuilder FMS II

LinkBuilder FMS TR

SuperStack SystemLinkBuilder FMS II

LinkBuilder FMS 1003C250-TX/I (12-port TP)

LinkSwitch 5003C30500LinkSwitch 10003C16900LinkSwitch 12003C16640LinkSwitch 22003C220000LinkSwitch 27003C32730 with OC-3c

LinkBuilder MSH3C18041 (Chassis with FDDI backplane)

8

12

8

1224624

10

12

24

Up to 240(Ethernet) up to 108

(Token Ring)up to 54(FDDI)

8

12

8

12

10

24

6

16

12

Up to 240(Ethernet) up to 108

(Token Ring)up to 54(FDDI)

10BASE-T/RJ-45

10BASE-T/RJ-45

10BASE-T/RJ-45

10BASE-T/RJ-4510BASE-T/RJ-4510BASE-FL/ST10BASE-T/Two 50-pin Telco

BNC

12 RJ-45 UTP/STP ports and 1 router port24 RJ-45 UTP/STP ports and 1 router port

10BASE-T/Telco10BASE-T/RJ-4510BASE-FL/ST10BASE-2/BNCTR Lobe UTP/RJ-45TR Lobe STP/RJ-45TR RI/RO STP/DB-9TR RI/RO Fiber/STFDDI/MICCDDI/RJ-45

10BASE-T/RJ-45

10BASE-T/RJ-45

10BASE-T/RJ-45

10BASE-T/100BASE-T

10BASE-T/RJ-45

10BASE-T/RJ-45100BASE-T/RJ-4510BASE-T/RJ-45SAS Fiber MIC10BASE-T/RJ-45SAS Fiber MIC10BASE-T/RJ-45155 Mbps OC-3c/SC or45Mbps DS-3/BNC

10BASE-T/Telco10BASE-T/RJ-4510BASE-FL/ST10BASE-2/BNCTR Lobe UTP/RJ-45TR Lobe STP/RJ-45TR RI/RO STP/DB-9TR RI/RO Fiber/STFDDI/MICCDDI/RJ-45

None

Bridge MicroModuleTransceiver Interface Modules

Bridge MicroModuleTransceiver Interface Modules

Management ModuleBridge Management Module*Bridge MicroModuleTransceiver Interface Modules

RMON ManagementAdvanced RMON Management

Copper/Fiber RI/RO

Management ModuleEthernet Bridge ModuleToken Ring Bridge ModuleToken Ring RMON ModuleMedia ModulesTransceiver Interface Modules

None

Bridge MicroModuleTransceiver Interface ModulesBridge MicroModuleTransceiver Interface Modules

RMON Management

100BASE-TX100BASE-FX

None

100BASE-FX Fiber Downlink Module

FDDI (DAS) MIC Media Module

None

None

Management ModuleEthernet Bridge ModuleToken Ring Bridge ModuleToken Ring RMON ModuleLinkSwitch 1200 ModuleMedia ModulesTransceiver Interface Modules

Module OptionsMedia/ConnectionsNumberof PortsProduct Name and Part No.

Support forMixed Media

ManagementRequirementsNetwork Type

Decision Tree for 3Com LinkBuilder Hubs

See Medium- to large-sized LAN where expansion is likely for information.



*Bridge Management Module is not available for the FMS coaxial hub.


The SuperStackAdvantage

3Coms SuperStack system gives you

a simple, cost-effective connectivity

solution for local, wide area, and SNA

networks. With SuperStack, you can

combine diverse technologies and net-

work services in one stacked system,

strengthen it with redundant power

and resilience, and manage it all with

Transcend management software.

A single SuperStack system providesconnections for a range of LAN envi-ronments: Ethernet, 100BASE-T FastEthernet, Token Ring, FDDI, and ATM.Depending on your needs, you can buildSuperStack systems for virtually any net-work environment. Capabilities include:

Flexible, cost-effective connectivityfor Ethernet or Fast Ethernet work-groups with SNMP management

Industry-leading physical layer sup-port and RMON management forToken Ring networks

Support for the multiple functionsand technologies needed in diversefloor distribution environments

Ethernet, FDDI, and ATM switchingthat boosts performance in high-speed client/server LANs

Full multiprotocol network access forusers calling in from personal officesor other off-site locations

Routing between central site andbranch offices using innovativeBoundary Routing architecture orconventional routing software for mul-tiple WAN choices, including ISDN

SNA-to-LAN conversion linking localand remote offices to an SNA hostsystem

As an important part of 3Coms High-Performance Scalable Networking archi-tecture, SuperStack is designed to meetthe demands of growth and technologicalchangeallowing you to future-proofyour network investment as you go.

Great value with plug-and-play simplicity. Compact designwith bandwidth utilization meter and advanced LED diagnos-tics for trouble-free operation. BNC backbone connectionand MDI port for cascading to other hubs.

Proven reliability, easy to install and configure. LEDs on the front panel indicate collisions, packet receptions.MDI/MDIX switch for cascading to other hubs. Optionalbackbone media and bridge modules.

Easy plug-and-play installation, SNMP manageable,optional backbone media and bridge modules. MDI/MDIXswitch allows cascading to other hubs. Optional Transcendnetwork management.

The leading SuperStack stackable Ethernet hub. Easyexpansion stack up to 8 hubs to connect 208 users. Pro-active RMON management, security features, resilientlinks, and optional Transcend network management.

Stackable hub for easy expansionconnect up to 260users per ring. Advanced performance and fault-tolerantfeatures: Zero Delay Lockout, Distributed RecoveryIntelligence, Phase Locked Loop retiming. OptionalTranscend network management.

11-slot, advanced technology hub with hot-swappablemodules. Ethernet, Token Ring, and FDDI support. Robustfeatures; optional modules support mixed media, Ethernet-to-FDDI switching, FDDI concentration, and bridging.Advanced fault tolerance with patented LAN SecurityArchitecture to safeguard data on Ethernet LANs. Optional Transcend network management.




Combine LinkBuilder FMS II hubs with a LinkSwitch orLinkBuilder FMS 100 hub to relieve network congestion.Choose from stackable Ethernet to FDDI, ATM, and FastEthernet units. Optional Transcend network managementprovides complete control of the entire stack.

SuperStack stackable Fast Ethernet hub with optional 100BASE-TX modules and expansion to 206 Fast Ethernetports. Optional SNMP management available.


Features and Advantages

Backbone WAN/SNA Host

Network Management Software

RedundantPower System

SNA-to-LAN Converters

Remote AccessServers

Routers

Hubs

Switches

Large Remot

e Office

Central Site

NETBuilder II

in Compu

ter Room

NETBuilder R

emote Office

222LinkBuilder F

MS II (12-Po

rt)

LinkBuilder F

MS II (24-Po

rt)

Redundant P

ower System

LinkBuilder M

SHFiber

LinkBuilderRPS3C565047

Redundant Power Supply

SYSTEMLinkBuilderRemote Office

LinkBuilderFMS II

LinkBuilderFMS II

INPUT OUTPUT

Fault Overtemp

OK

Link

Active

FaultStatus

RS-449 (B) RS-232 (C)

WAN INTERFACES

STATUS

1 2 3 4 5 6 7 8 9 10 1 1 12

1 3 14 15 16 17 18 19 20 21 22 23 24

Fwd Power/Fault

Reset

Send

Active

Fault

Link

10BT

+/-A B C

Console

10-Base T AUI

UNIT

Red = Partition

1 2 3 4

5 6 7 8

MDI

MDIX

TCVR

AUI

Packet

Collision

Power

MGMT

3C16671

STATUS

1 2 3 4 5 6

7 8 9 10 1 1 12

UNIT

Red = Partition

1 2 3 4

5 6 7 8

MDI

MDIX

TCVR

AUI

Packet

Collision

Power

MGMT

3C16670green = link OK Red = Partitionoff = link fail


Solution 1: Managed Ethernet Connectivity

Solu

tion

1: M

anag

ed E

ther

net C

onne

ctiv

ity

ProductsLinkBuilder FMS II 12-Port TP Hub(3C16670)

LinkBuilder FMS II 24-Port TP Hub(3C16671)

LinkBuilder FMS II Management Module(3C16630)

NETBuilder Remote Office 222 (3C8222)

Redundant Power System (3C565047)

HighlightsAt the large remote office, two managed LinkBuilder FMS II hubscombine with a remote router in aSuperStack system, including theRedundant Power System for addedreliability and maximum uptime. Asthe network grows, more LinkBuilder

FMS II hubs can be added to the sameSuperStack system, forming a singlelogical repeater. The hubs advancedRMON functionality features aproactive polling mechanism forcost-effective remote management.

Transceiver interface modules arealso available for backbone mediaconnections. (See page 19.)

HighlightsThe large departmental workgroup atthe central site is an ideal applicationfor the powerful LinkBuilder MSHhub. The LinkBuilder MSH is 3Comsmost advanced, fault-tolerant floordistribution concentrator, providinghigh port density, resilient links, andhot-swappable modules for maximumuptime in mission-critical applica-tions. A single management moduleprovides SNMP-based Transcendmanagement for the entire hub.

Corporate Headquarters

Large Remote Office

Requirements

Connect users in an enterprise-wide Ethernet network, using a mixture of twisted-pair, thincoax, and fiber cabling. Provideintegrated network manage-ment with security features for data protection. Scale the connectivity solutionsto meet the needs of a largecorporate headquarters,an expanding remote site, a small satellite office.

Small Satel

lite Office

LinkBuilder T

P/8i

NETBuilder R

emote Office

201

Local Workg

roup

LinkBuilderTP/8iSTATUS

1 2 3 4

Red = Partition

TCVR

green = link OK Red = Partitionoff = link fail

STATUS

1 2 3 4

green = link OK Red = Partitionoff = link fail

MDI

MDIX

Packet

Collision

Power

MGMT

3C16181

Security: DefendingData and ResourcesThe LinkBuilder FMS II hubs and theEthernet modules in the LinkBuilder MSHsupport 3Coms LAN Security Architecture(LSA), making them highly effective toolsfor safeguarding valuable data and com-puting resources. A patented, chip-basedsystem, LSA provides the following power-ful security features:

Need to Know protects sensitive dataon the network by checking destinationaddresses on each packet and sendingreadable packets only to authorizednodes.

Disconnect Unauthorized Device auto-matically records and/or disables anunauthorized device attempting to logon to the network.

Audit Log gives the manager a complete record of user and devicechanges on the network.

Multiple User Levels ensure that onlyauthorized users have access to critical network functions.

Passwords can be used to identify network managers.

Stand-alone encryption systems that pro-vide the same protection are expensiveand relatively difficult to implement, andcan adversely affect network performance.

Solution 1: Managed Ethernet Connectivity

Small Satellite Office

HighlightsThe smaller satellite office is notexpected to grow, but users need toshare data and access resources at the central site. With its built-inSmartAgent intelligence and optionallocal bridging, the 8-port LinkBuilderTP/8i fixed-port hub is a robust,affordable solution.

Expansion modules connectdirectly to the LinkBuilder MSHcoax or fiber Ethernet modules.These expansion modules reduceconnectivity costs and easilyaccommodate diverse cablingrequirements. Similarly, the 7-portUTP module features six RJ-45ports and a transceiver interface port for connection to the backbone.

ProductsLinkBuilder TP/8i Hub (3C16181)

NETBuilder Remote Office 201 (3C8201)

Products LinkBuilder MSH Chassis with FDDIBackplane (3C18041)

LinkBuilder MSH 525W Power Supply Unit(3C18012)

LinkBuilder MSH 24-Port 10BASE-TRepeater Module (3C18122A)



LinkBuilder MSH Management Module(3C18500)

LinkBuilder MSH Transceiver InterfaceExpansion Module (3C18146)

Fiber-Optic Transceiver Interface Module(3C1206-5)

NETBuilder II Bridge/Router 4-Slot Chassis(3C6000)

Fiber-Optic Repeater Module (3C18135A)


Solu

tion

2: M

anag

ed T

oken

Rin

g Co

nnec

tivity

Solution 2:Managed Token Ring Connectivity

HighlightsFor flexible, cost-effective networkexpansion in Token Ring environ-ments, the LinkBuilder FMS TR fea-tures industry-leading physical layersupport, including Phase-LockedLoop (PLL) per-port retiming, ZeroDelay Lockout (ZDL), and jitterreduction, with support for up to 260 users per ring.

Optional Ring In/Ring Out expan-sion modules provide copper (UTPor STP), fiber, and copper/fiber con-nections for flexible expansion over different types of media. These RI/ROexpansion modules also allow mainring connections from separate wiringclosets as the LAN expands.

For network optimization and control, Transcend managementapplications work with theLinkBuilder FMS TR managementagent module to implement all 10RMON groups and provide network

analyzer level functionality through a user-friendly, graphical interface.

Part of 3Coms SuperStacksystem, the LinkBuilder FMS TR can be combined with 3ComsLinkConverter SNA-to-LAN con-verters for SNA internetworking, andwith the optional Redundant PowerSystem for maximum uptime.

Network Expansion with LinkBuilder FMS TRRequirementsIncorporate a new documentimaging system requiring itsown 16 Mbps Token Ring net-work into an existing 4 MbpsToken Ring network. Add anew workgroup to the networkusing Token Ring stackablehubs.

ProductsLinkBuilder FMS TR 12-Port Hub (3C510500)

LinkBuilder FMS TR 24-Port Hub (3C510501)

LinkBuilder FMS TR RMON ManagementAgent Module (3C510502)*

LinkBuilder FMS TR Advanced RMONManagement Agent Module (3C510505)*

LinkBuilder FMS TR Copper RI/RO Module(3C510504)*

LinkBuilder FMS TR Fiber RI/RO Module(3C510503)*

LinkBuilder FMS TR Copper/Fiber RI/ROModule (3C510506)*

8-Foot Redundant Ring Cascade Cable(3C510508)


*For the 12-port hub only

Solution 2: Managed Token Ring Connectivity

HighlightsThe LinkBuilder MSH Token Ringmodules provide an array of TokenRing physical layer resilience fea-tures unmatched in the industry.Phase-Locked Loop (PLL) per-portretiming, Zero Delay Lockout (ZDL),and jitter reduction ensure a cleansignal and prevent beaconing nodes.These features ensure greater relia-bility across Token Ring networks,support more devices over greaterdistances, and ensure that devices donot interrupt the network by insert-ing into the ring at the wrong speed.

This solution exploits theLinkBuilder MSH hubs ability tohandle multiple Token Ring pathsrunning at 4 or 16 Mbps. The addi-tion of a second RingBuilder

module allows the MAUs to bedivided into two Token Rings. TheLocal Token Ring Bridge moduleprovides fully integrated bridgingbetween those ringsin this case,between a 4 Mbps ring and the 16 Mbps imaging system ring.

RI/RO to 4 Mbps

Token Ringpath connections

2-Port BridgeModule

Advanced MAU Modules

16 Mbps Token Ringfor document imaging system

4 Mbps Token Ring

RingBuilderModules

Token Ring backbone

Configuring theLinkBuilder MSH in a Token RingEnvironmentUse the following rules to configurethe LinkBuilder MSH for Token Ring.

The Advanced MAU module does not count as a station.

The STP or UTP MAU modulecounts as one station.

The STP or Fiber RingBuildermodule counts as three stations.

The maximum Level 5 UTP cable lengths for the AdvancedMAU module are:400 m lobes, 260 stations (4 Mbps)200 m lobes, 260 stations (16 Mbps)

The maximum STP cable lengths for the Advanced MAUmodule are:

600 m lobes, 260 stations (4 Mbps)300 m lobes, 260 stations (16 Mbps)

The maximum STP trunk cablelengths for the RingBuilder RI/RO are: 770 meters (4 Mbps)346 meters (16 Mbps)

The maximum UTP trunk cablelengths for the RingBuilder RI/RO, when used in conjunctionwith approved media filters, are:

100 meters for Level 3 UTP



ProductsLinkBuilder MSH Chassis with FDDIBackplane (3C18041)


LinkBuilder MSH Fiber RingBuilderModules (3C18240)

LinkBuilder MSH Advanced MAU Module(3C18202)

LinkBuilder MSH 2-Port Token Ring BridgeModule (3C18620)


Bridged Token Ring with LinkBuilder MSH



Solution 3:Building a Resilient Network

Solu

tion

3: B

uild

ing

a Re

silie

nt N

etw

ork

To switch (primary)

To switch(secondary)

ManagementModule

13-Port 10BASE-T Module

PC PC

24-Port 10BASE-T Module

PC

HighlightsThis solution uses LinkBuilder MSHhubs and LinkBuilder FMS II stack-able hubs in the wiring closets linkedto two central LANplex 6004switches. The fiber optic backbonealso provides inherent resilience andimmunity from noise.

To protect the mission-criticalapplications, each LinkBuilder MSHhub has a connection to each of theLANplex switching hubs. One con-nection is designated the primary link,while the other functions as a backup.(Up to 16 Ethernet resilient link pairscan be configured on a LinkBuilderMSH hub.) The primary and second-ary links are connected to separate

modules in the LinkBuilder MSH hubsto protect the network against the fail-ure of a single component.

The LinkBuilder MSH has otherresiliency features as well. DistributedRepeater Architecture provides eachEthernet module with its own repeater,so a failure in one module cannotbring down the others. And redundantpower supplies provide additionalprotection. If one power supply fails,the other takes over and an alert issent to the management station.

LinkBuilder MSH ConfigurationRequirementsInstall a new structured cablingsystem in a multi-floor build-ing using a fiber backbone andUTP floor wiring. The newconfiguration replaces a thickEthernet backbone and thinEthernet floor wiring. Newhubs are needed in the wiringclosets on the floors and in adata center. On some floors,space considerations dictatethe use of compact, stackablehubs. This network will runmission-critical applications.


Solution 3: Building a Resilient Netw

ork

Rx TxRx

loss

HighlightsFor smaller workgroups, or wherespace is a concern, LinkBuilderFMS II stackable hubs with theBridge Management Module usingSpanning Tree Algorithm (STA)can provide redundant paths to theLANplex switching hubs in thedata center.

A Redundant Power Systemensures constant power for up tofour SuperStack units. AdditionalRedundant Power Systems can beadded if required. The system com-prises two load-sharing bulk powersupplies fed by two independent AClines. In the event of a failure in oneof the supplies, an alarm is automati-

cally sent to the management con-sole. The system also has redundantfans and LED temperature indicatorsto protect against failures caused byoverheating.


LinkBuilder FMS II Telco Hub (3C16672)

LinkBuilder FMS II Fiber Hub (3C16665)

LinkBuilder FMS II Bridge ManagementModule (3C16040)


SuperStack Configuration


2X LinkBuilder MSH 525W Power SupplyUnits (3C18012)






Solu

tion

4: B

ridgi

ng a

nd L

AN S

egm

enta

tion

Solution 4: Bridging and LAN Segmentation

3 Ethernetbackplanes

Fiber backbone

4-Port Bridge Module

UTP Modules

ManagementModule

Highlights 3Coms chassis-based LinkBuilderMSH solution provides the highdegree of segmentation required bythis organization. The LinkBuilderMSH 4-Port Ethernet Bridge Modulebridges the LAN segments across thehubs three backplanes, effectivelytripling the total network bandwidthfrom 10 Mbps to 30 Mbps. Thebridge module supports SpanningTree Algorithm (STA), adding to the resiliency of the hub.

The LinkBuilder MSH bridgemodule has extensive filtering capa-bilities, which help control networktraffic by isolating protocols andensuring that network segments areonly accessible by selected users.3Coms patented LAN Security

Architecture (LSA) providesadvanced security features like Needto Know, which ensures that onlyauthorized users receive sensitivedata, and Disconnect UnauthorizedDevice, which can automaticallydeny access to network intruders.

Traffic among users within thesame segment is filtered by thebridge module, keeping unnecessarytraffic off the rest of the network.With Transcend network managementsoftware, you can configure the entirenetwork from a single hub view, evenmoving modules from one segment toanother via software.

The ST Fiber Optic TransceiverInterface module plugs into the bridgemodule to provide connection withthe fiber optic building backbone.The LinkBuilder MSH also providesthe same level of segmentation in acoax, fiber, RJ-45, or mixed mediaenvironment.

Large Ethernet NetworkRequirementsSubdivide a large Ethernetnetwork to cope with high traf-fic levels that are adverselyaffecting performance. Providesafeguards against unautho-rized network access.

Relocate a computer-aideddesign (CAD) departmentrequiring two separate networksegments to the same floor as adepartment running NetWare.LAN traffic on all three net-works must remain separate,while still allowing for inter-connections between the depart-ments and the fiber backbone.

Provide a cost-effective LANextension with full segmenta-tion capabilities. Connect asmall segment of users to theexisting network.


Highlights3Coms stackable Ethernet hubs canprovide a cost-effective network addi-tion with full segmentation capabili-ties and the benefits of 3Coms LANSecurity Architecture. This solution isalso an option for a smaller networkwhere cost is a concern.

The slide-in LinkBuilder FMS IIBridge Management Module lets yousegment the network, manage bothhub and bridge operations, and runSpanning Tree Algorithm (STA) forredundant links. It features a fullIEEE 802.1d transparent bridge com-plete with a 1024-address filteringdatabase.

If all you need is low-cost, simplebridging without sophisticated man-agement capabilities, the LinkBuilderBridge MicroModule is the idealalternative. Just slide this unmanagedlocal bridge into the transceiver inter-face module slot of a LinkBuilderFMS II hub.

With either option, you get dramatic improvements in networkperformance without the need topurchase dedicated local bridges oneach floor.

Solution 4: Bridging and LAN Segm

entation




LinkBuilder MSH 4-Port Ethernet BridgeModule (3C18600)




LinkBuilder FMS II Telco Hub (3C16672)


LinkBuilder FMS II Bridge ManagementModule (3C16040)


CAD workstationsCADserver

NetWare users NetWare departmentserver

CAD workstationsCADserver

Rx TxRx

loss

LAN Extension

LinkBuilder FMS II Bridge Management Module


Solution 5:LAN Switching and High-Speed Connectivity

HighlightsWith powerful connectivity andswitching modules, the LinkBuilderMSH hub can provide high-speedFDDI floor concentration, as well as floor-based switching betweenEthernet and FDDI LANs. High-performance users get FDDI connec-tions from the hub, while other userskeep their Ethernet links.

The FDDI RingBuilder modulecreates an FDDI ring from multipleFDDI fiber-optic concentrator mod-ules within the LinkBuilder MSH hub.FDDI-attached servers offer signifi-cant improvement in file access overEthernet server connections in high-bandwidth application environments.

The LinkSwitch 1200 module and the LinkSwitch 1200 expansionmodule provide full-speed switchingbetween up to nine Ethernet segmentsand FDDI. The LinkSwitch 1200module can connect to one of the

internal FDDI backplanes, or accom-modate 1 or 2 FDDI fiber MIC mediamodules for external single-attached,dual-attached, or dual-homed con-nections to the FDDI ring. The dualhoming feature provides additionalresilience by preventing the FDDIring from fragmenting if multipledevices fail simultaneously.

Solu

tion

5: L

AN S

witc

hing

and

Hig

h-Sp

eed

Conn

ectiv

ity ProductsLinkBuilder MSH Chassis with FDDIBackplane (3C18041)

LinkBuilder MSH 525 Power Supply Unit (3C18012)


LinkBuilder MSH FDDI Fiber-Optic Module(3C18300)

LinkBuilder MSH FDDI RingBuilder Module(3C18310)

LinkBuilder MSH LinkSwitch 1200 Module(3C18640)

FDDI MIC Media Module (3C18320)

LinkBuilder MSH LinkSwitch ExpansionModule (3C18645)


LANplex 2500 (3C250100)

FDDI backbone

FDDI servers

Standardworkstations

LinkSwitch 1200 Module(3C18640)

High-performance workstations

Chassis-Based High-Performance WorkgroupsRequirementsProvide high-speed connectionsto floor-based workgroups in a large network with an FDDIor ATM backbone. Servers are distributed throughout thebuilding. Servers and high-performance workstations needhigher bandwidth than can beobtained with current Ethernetconnections.


HighlightsFor switching in the SuperStackenvironment, theres the LinkSwitchfamily of switching hubs. Choosefrom stackable Ethernet, FDDI, andATM switching units to segment floorwiring and improve performance inworkgroups, or to extend more band-width to individual servers or work-stations. Solution 5: LAN

Switching and High-Speed Connectivity

LinkSwitch: ASwitching Revolutionin the Workgroup3Coms LinkSwitch family of switcheseliminate client/server bottleneckswith fast, simple, low-cost, highlymanageable designs that have revo-lutionized workgroup switching.

PerformancePowerful switchingengines extend full 10 Mbps band-width to the workgroup and up to155 Mbps to the server or backbone,eliminating network bottlenecks.

SimplicityPlug-and-play installa-tion and drag-and-drop graphicalconfiguration make adds, moves, and changes exceptionally easy.

Low CostThe switches deliver high performance without the needfor expensive desktop or cablingchanges. They are priced for theworkgroup, making them affordablefor all workgroup applications, including connecting individualpower users.

ManageabilityTranscend manage-ment gives you at-a-glance monitor-ing and comprehensive control of theentire workgroupswitches, hubs,and adapters. Management toolscombine a high degree of flexibilitywith a common look and feel.

SuperStackEvery LinkSwitchworkgroup switch is part of 3ComsSuperStack system, allowing you toenhance connectivity, functionality,and resilience by simply adding unitsto the stack.

Fault ToleranceFor additionaluptime protection, you have theoption of using a Redundant PowerSystem.

ProductsLinkBuilder FMS II 24-Port Hub (3C16671)


LinkSwitch 500 (3C30500) or



LinkSwitch 2200 (3C220000) (Shown below) or

LinkSwitch 2700 (3C32730) with OC-3c

LinkBuilder FMS II Management Module(3C16630)


SuperStack Workgroups with LAN Switching

LinkBuilderFMS II

LinkBuilderFMS II

LinkSwitch2200

LinkBuilderRPS3C565047

Redundant Power Supply

INPUT OUTPUT

Fault Overtemp

OK

STATUS

1 2 3 4 5 6 7 8 9 10 1 1 12

1 3 14 15 16 17 18 19 20 21 22 23 24

STATUSSTATUS

ETHERNET

UNIT

Red = Partition

1 2 3 4

5 6 7 8

MDI

MDIX

TCVR

AUI

Packet

Collision

Power

MGMT

3C16671

STATUS

1 2 3 4 5 6

7 8 9 10 1 1 12

1 2 3 4 5 6

7 8 9 10 11 12

1 2 3 4 5 6

7 8 9 10 11 12

UNIT

Red = Partition

1 2 3 4

5 6 7 8

TCVR

AUI

Packet

Collision

Power

MGMT

3C16665green = link OK Red = Partitionoff = link fail

1 2 3 4 5 6

A B 7 8 9 10 11 12 1 3 14 15 16

FDDI

A B 13 14 15 16

Serial Port

Ethernet

LinkSwitch500

LinkSwitch100 0

LinkSwitch1200

LinkSwitch2200

LinkSwitch2700

Lowest Ethernet/ ATM price/port 12 RJ-45 UTP ports 8,192 MAC addresses Forwarding mode Cut-through and Store and Forward

Low entry price 6 RJ-45 UTP ports 1,014 MAC addresses Forwarding mode Store and Forward

Lowest Ethernet- FDDI price/port 16 RJ-45 UTP ports 8,192 MAC addresses Forwarding mode Store and Forward

Lowest price/port and entry price 24 RJ-45 UTP ports 500 MAC addresses* Forwarding mode Cut-through and Store and Forward 2 Fast Ethernet ports

Lowest entry price 10 RJ-45 UTP ports 8,192 MAC addresses Forwarding mode Cut-through

Fast Ethernet

Which LinkSwitch Workgroup Switch?

Which high-speed server/backbone access technology?

FDDI ATM

*Unlimited on the downlink


LinkBuilder MSH

LinkBuilder MSH is a multi-serviceshub that can support up to 10 man-aged Ethernet, 5 managed Token Ring,or 3 managed FDDI workgroups overdiverse media types.

The LinkBuilder MSH offers out-standing reliability and fault tolerance.Each Ethernet connectivity modulehas its own repeater, so a failure in onemodule cant bring down the others.Automatic resilient links ensure relia-bility and maximize uptime, and allconnectivity modules and powersupplies are hot-swappable, includ-ing fans.

The Ethernet bridge module provides the hub with affordable segmentation to boost performanceon the floor. For high-speed floorconnectivity, FDDI concentratormodules support FDDI using MICconnectors and CDDI using RJ-45connectors. FDDI RingBuilder mod-ules build a single FDDI ring frommultiple FDDI concentrator modules.

In Token Ring LANs, theLinkBuilder MSH features Phase-Locked Loop retiming for reliable sig-nals over larger rings, and Zero DelayLockout and Advanced DistributedRecovery Intelligence to isolate faultystations from the network.

The LinkBuilder MSH hubincludes integrated support forEthernet RMON network manage-ment. RMON agents and ASICs oneach connectivity module collect andcompile RMON data, providing pow-erful monitoring capabilities for everysegment on the network. BecauseRMON intelligence is integrated intothe connectivity modules, RMONfunctionality scales easily as yournetwork grows. An RMON module is also available for Token Ring.

A single management modulemanages the entire multi-technologyhub. Using 3Coms Distributed

Management Architecture, manage-ment functions are shared between themanagement module and SmartAgentmanagement agents in the connectiv-ity modules.

The hubs unique, high-speed pas-sive bus can support up to 17 separateservices at data rates up to 155 Mbpseach. This technology-independent buswill also handle 100 Mbps Ethernetand Asynchronous Transfer Mode(ATM) in the future, without the needto upgrade the chassis or backplane.

The LinkBuilder MSH does offer a full range of workgroup switchingoptions. The LinkSwitch 1200Ethernet-to-FDDI switching moduleis available now, letting you placeservers on an FDDI ring while usersremain in Ethernet workgroups on the floor. Switching modules arealso planned for Ethernet-to-ATM,100BASE-T Fast Ethernet, and TokenRing connectivity.

HUB CHASSIS

LinkBuilder MSH Chassis (3C18040)LinkBuilder MSH Chassis with FDDIBackplane (3C18041)Each chassis comes with 11 slots that accom-modate smart connectivity modules and anoptional Management Module. A single powersupply can be used; two provide resiliency.

ModulesPOWER375W Power Supply (3C18011)525W Power Supply (3C18012)Choose the 375W or the 525W power supplyto power the LinkBuilder MSH. Installingtwo provides load-sharing resilience forincreased reliability.

MANAGEMENT

Management Module (3C18500)Provides SNMP management of all technolo-gies and workgroups in the hub using 3ComsDistributed Management Architecture.

ETHERNET MODULES

LinkBuilder MSH provides state-of-the-artEthernet support with connectivity modulesfor the full range of media types and securityneeds. Modules designated smart imple-ment 3Coms Distributed ManagementArchitecture.

13-Port 10BASE-T Repeater Module(3C18120A)Smart, secure module providing connectionsfor 12 UTP users via a Telco connector, with a13th port for a transceiver interface module.

12-Port 10BASE-T Repeater Module(3C18121A)Smart, secure module providing connectionsfor 12 UTP users via RJ-45 connectors.

24-Port 10BASE-T Repeater Module(3C18122A)Smart, secure module providing connectionsfor 24 UTP users via two Telco connectors.

7-Port 10BASE-T Repeater Module(3C18124A)Smart, secure module providing connectionsfor six UTP users via RJ-45 connectors andone optional transceiver interface module.

3C18500

3C18121A3C18120A 3C18122A 3C18140A3C18124A 3C18135A

Hub Chassis

Power Supplies


Fiber-Optic Repeater Module (3C18135A)Smart, secure module providing connectionsfor six fiber users via ST connectors. Moduleconforms to the 10BASE-FL standard.

6-Port Coax Repeater Module (3C18140A)Smart, secure module providing connectionsfor six coax users via BNC connectors. Eachport has a separate switch to allow for inter-nal segment termination.

EXPANSION MODULES

LinkBuilder MSH expansion modules cost-effectively increase the number of availableports. Media may be mixed for maximum flexibility.

Fiber-Optic Expansion Module (3C18136)Adds six fiber ST ports to a coax or fiberrepeater module.

Coax Expansion Module (3C18141)Adds six coax ports to a coax or fiber repeater module.

Transceiver Interface Expansion Module(3C18146)Equipped with slots for two TransceiverInterface Modules (see page 19), cost-effectively adding transceiver connections for a variety of media to LinkBuilder MSHcoax or fiber repeater modules.

TOKEN RING MODULES

The LinkBuilder MSH lets you fully integrateToken Ring LANs into your enterprise networkwhile maintaining a high degree of dataintegrity.

UTP MAU Module (3C18200)STP MAU Module (3C18201)Connections for 12 UTP or STP users viashielded RJ-45 connectors.

Advanced MAU Module (3C18202)Connections for 12 UTP or STP users viashielded RJ-45 connectors. UTP and STP connections can be mixed on one module.Module includes advanced reliability and performance features.

STP RingBuilder Module (3C18241)Provides Ring In/Ring Out (RI/RO) connectionsand smart management for any number ofMAUs in the LinkBuilder MSH chassis. DB-9 STP connectors.

Fiber RingBuilder Module (3C18240)Provides Ring In/Ring Out (RI/RO) connectionsand smart management routines for anynumber of MAUs in the LinkBuilder MSHchassis. ST fiber and DB-9 STP connectors.

RMON probe (3C18250) Supports all ten groups for one Token Ring.

FDDI CONNECTIONS

The LinkBuilder MSH provides high-speedFDDI concentration in both fiber-optic andUTP copper modules.

FDDI Fiber-Optic Module (3C18300)Connections for four single-attached workstations via fiber MIC connectors.

CDDI UTP Module (3C18301) Connections for six single-attached work-stations via UTP FDDI RJ-45 connectors.

FDDI RingBuilder Module (3C18310)Forms a single FDDI ring from multipleLinkBuilder MSH FDDI concentrator modulesusing the hubs backplane.

FDDI Fiber MIC Media Module (3C18320)Lets you set up a link to an external ring, ortwo links for resilient dual-attach or dual-home FDDI configurations.

BRIDGING

4-Port Ethernet Bridge Module (3C18600)Local Ethernet bridge with three internal portsfor workgroup connections to the hub back-planes and one external port for a backboneconnection via a transceiver interface module.Supports Spanning Tree Algorithm and a fullrange of user-configurable filter options.

2-Port Token Ring Bridge Module(3C18620)Local 4/16 Mbps SRT Token Ring bridge withone internal port for a workgroup connectionand one port that is switchable between asecond internal Token Ring or an externalconnection with DB-9 RI/RO connectors.

SWITCHING

LinkSwitch 1200 Module (3C18640)Provides frame switching between the hubsthree Ethernet buses and FDDI. Can connectto the internal FDDI backplane or optionalinterfaces for external single- or dual-attached FDDI rings.

LinkSwitch Expansion Module (3C18645)Connects six additional switched UTPEthernet segments or high-performanceworkstations to the hubs three Ethernet backplanes and FDDI.

3C18200 3C18201 3C18202 3C18241 3C18240 3C18650

3C18136 3C18141 3C18146

3C18300 3C18301 3C18310

3C18320

3C186203C18600

3C18640 3C18645


LinkBuilder FMS II

LinkBuilder FMS II stackable hubsprovide media flexibility, manage-ability, and economy, with an unbeat-able list of features that includesbridging, built-in resilient links, andoptional redundant power supplies.

With LinkBuilder FMS II, youcreate a single- or mixed-mediaEthernet stack with 12-port and 24-port RJ-45 twisted-pair, 24-portTelco twisted pair, and 6-port STfiber hubs. You can also integrate theLinkBuilder FMS coaxial hub with a LinkBuilder FMS II mixed mediastack. These hubs keep your initialinvestment low, letting you increaseport density and add bridging andcomprehensive SNMP managementwhen you need it.

LinkBuilder FMS II hubs workwith 3Coms innovative SuperStacksystems, allowing you to easily inte-grate hubs, bridges, routers, switches,and redundant power, managingthem as a single system.

Hubs

12-Port TP Hub (3C16670)Provides 12 shielded RJ-45 twisted-pairconnectors, along with a standard AUIport or a slot for a slide-in transceiverinterface module.

Fiber Hub (3C16665)Provides six ST fiber connectors, alongwith a standard AUI port and a slot for aslide-in transceiver interface module.

Telco Hub (3C16672)Provides two 50-pin Telco connectors,along with a standard AUI port and a slotfor a slide-in transceiver interface module.

24-Port TP Hub (3C16671)Provides 24 shielded RJ-45 twisted-pairconnectors, along with a standard AUIport and a slot for a slide-in transceiverinterface module.

LinkBuilder FMS Coaxial Hub (3C1625-0)Provides 10 BNC coaxial ports alongwith a standard AUI port and a slot for a slide-in transceiver interface module.(Not shown.)

LinkBuilder FMS II Stack (back view)

LinkBuilder FMS IIManagement Module

Redundant Power System connector

StandardAUI port

3C16671

LinkBuilderBridgeMicroModule

Transceiver InterfaceModule for backbone connections (BNC, ST Fiber, TP, AUI)

Separate resilientpower supply

Expansioncable

3C16665

3C16672

3C16670

LinkBuilder FMS II Stack (front view)


LinkBuilder FMS II HubStacking RulesLinkBuilder FMS II hubs can be linkedtogether to form a stack, or users canmix LinkBuilder FMS II or LinkBuilderFMS hubs in a stack. Here are somestacking rules for common configurations.

1. Up to eight LinkBuilder FMS II hubscan be stacked in a managed orunmanaged configuration to form a single logical repeater.

2. Unmanaged LinkBuilder FMS orLinkBuilder FMS II hubs can beplaced in any position in the stack.

3. A LinkBuilder FMS II ManagementModule (3C16630) or LinkBuilder FMSManagement Module (3C1603-0) can be used to manage a stack ofLinkBuilder FMS II or LinkBuilder FMShubs. (Management module softwareversion 2.0 or greater is required.)

4. Managed LinkBuilder FMS hubs canbe mixed with LinkBuilder FMS IIhubs, providing they are in positions 1 through 4 in the stack.

5. A combination of LinkBuilder FMS IItwisted-pair, telco, and fiber hubs canbe placed in any position in a stack.

Diagram A

LinkBuilder FMS Management Moduleinstalled in LinkBuilder FMS hub

LinkBuilder FMS Management Module (3C16030)

LinkBuilder FMS II Management Module (3C16630)

LinkBuilder Bridge MicroModule (3C16060)

Diagram B

LinkBuilder FMS II Management Moduleinstalled in LinkBuilder FMS II hub

Modules

Management Module (3C16630)User-installable SNMP module thatcan be added to any hub in the stackat any time. A single module man-ages the entire stack, supporting in-band management from an SNMPmanagement station over IP or IPX,via a telnet session, or out-of-bandusing the local port, a modem, orSerial Line Interface Protocol (SLIP)over a remote serial connection.

Bridge Management Module(3C16040)User-installable module that pro-vides local bridging, bridge manage-ment, and hub management for allLinkBuilder FMS II hubs. Lets yousegment the network, manage bothhub and bridge operation, and runSpanning Tree Algorithm (STA) forredundant links.

Bridge MicroModule (3C16060)User-installable, unmanaged, self-learning local bridge that slides intothe transceiver interface moduleslot of a LinkBuilder FMS II hub.Provides low-cost, simple bridgingin situations where management isnot needed.

Transceiver Interface ModulesSee page 19 for details.

Power Options

Redundant Power System(3C565047)Provides two load-sharing bulkpower supplies fed by independentAC lines. Either of the two suppliescan support up to four LinkBuilderFMS II hubs or other units in aSuperStack system.

1. LinkBuilder FMS

2. LinkBuilder FMS

3. LinkBuilder FMS

4. LinkBuilder FMS II






2. LinkBuilder FMS

3. LinkBuilder FMS

4. LinkBuilder FMS






LinkBuilder FMS TR

LinkBuilder FMS TR hubs combineRMON-based management with themost advanced physical layer supportin an affordable, expandable platformfor mission-critical Token Ring networks.

The hubs provide an array ofToken Ring features unmatched inthe industryincluding advancedZero Delay Lockout and DistributedRecovery Intelligence error recoveryand fault isolation technologies,Phase-Locked Loop retiming mech-anisms, and sophisticated SNMPRMON network management.

For connectivity in a central wiringcloset, cascade connectors can link upto 20 hubs in one rackup to 260users in all. Ring In/Ring Out mod-ules allow main ring connections to20 hubs in different locations up to660 feet (200 meters) apart.

LinkBuilder FMS TR is part of3Coms innovative SuperStack sys-tem, allowing you to easily integratehubs, bridges, routers, switches, SDLCconversion devices, and redundantpower into a single, manageable stack.

Hubs

12-Port Hub (3C510500)Provides 13 RJ-45 twisted-pair ports,along with two DB-15 cascade connec-tors and a cascade cable. Hub has slotsfor management and RI/RO expansionmodules.

24-Port Hub (3C510501)Provides 25 RJ-45 twisted-pair ports,along with two DB-15 cascade connec-tors and a cascade cable.

Modules

RMON Management Agent Module(3C510502)User-installable SNMP RMON modulethat adds a network analyzer level ofmanagement to the LinkBuilder FMSTR hubs. Slides into the LinkBuilderFMS TR 12-port hub only; includes an RS-232 DB-9 serial port.

Advanced RMON Management AgentModule (3C510505)User-installable SNMP RMONmodule that supports all ten groups ofthe Token Ring RMON specification.Slides into the LinkBuilder FMS TR 12-port hub only; includes an RS-232DB-9 serial port.

Fiber RI/RO Module (3C510503)Slide-in module providing Ring In/RingOut expansion to multiple wiring closets.Module has two pairs of fiber ST con-nectors and slides into the LinkBuilderFMS TR 12-port hub only.

Copper RI/RO Module (3C510504)Slide-in module providing Ring In/RingOut expansion to multiple wiring closets.Module has two RJ-45 ports and slidesinto the LinkBuilder FMS TR 12-porthub only.

Copper/Fiber RI/RO Module (3C510506)Slide-in module providing Ring In/RingOut expansion to multiple wiring closets.Module has one RJ-45 port and one pairof fiber ST connectors and slides into theLinkBuilder FMS TR 12-port hub only.

Accessories

Hub Expansion Cascade Cable (spare)(3C510507)

8-Foot Redundant Ring Cascade Cable(3C510508)

Power Options

Redundant Power System (3C565047)Provides two load-sharing bulk powersupplies fed by independent AC lines.Either of the two supplies can support up to four LinkBuilder FMS TR hubs or other units in a SuperStack system.

LinkBuilder FMS II TR Stack

3C510500

3C510501

3C565047


Fixed-Port Hubs,Repeaters, andAccessories

Fixed-Port Hubs

LinkBuilder TP/8i Hub (3C16181)Standalone 10BASE-T hub designed for small remote offices with a require-ment for SNMP management. Supportsup to eight twisted-pair ports via RJ-45connections, with an optional, modu-lar backbone port. Features built-inSmartAgent management and supportfor local bridging using the LinkBuilderBridge MicroModule. Backed by a life-time warranty, the LinkBuilder TP/8iis a robust entry point for reliable, man-aged 10BASE-T networking.

LinkBuilder TP/12 Hub (3C16170)Unmanaged, standalone workgroup hubproviding 12 shielded RJ-45 twisted-pairconnectors, along with a slot for optionaltransceiver interface modules for back-bone connections. The LinkBuilderBridge MicroModule (3C16060), whichfits into the transceiver interface slot,provides unmanaged bridge functionality.

LinkBuilder TP/8 Hub (3C16180)Unmanaged, standalone workgroup hubproviding eight shielded RJ-45 twisted-pair connectors, along with a standardBNC connector for backbone connec-tions. Eighth port can be used as a station port or for cascading multiplehubs on the same segment. Power sup-plied from external AC power source.

Repeaters3Coms LinkBuilder repeaters let youconnect coax, twisted-pair, and fibercabling in a standard Ethernet network.A third network segment may be addedusing an optional transceiver interfacemodule. These repeaters offer reliabilitybased on proven technology, and can beused in combination with any of 3ComsEthernet hubs to provide a completeLAN solution.

LinkBuilder AUI/BNC Repeater (3C16210)One AUI, one BNC

LinkBuilder AUI/Fiber Repeater(3C16505)One AUI, one pair ST

LinkBuilder AUI/AUI Repeater (3C16200)Two AUI

Accessories

TRANSCEIVER INTERFACE MODULES

These modules plug into special slots orexpansion modules in many LinkBuilderhubs to provide backbone connectionsover a variety of media.

AUI Transceiver Interface Module(3C1206-0)One female AUI connector

Fan-Out Transceiver Interface Module(3C1206-4)One male AUI connector

Fiber-Optic Transceiver InterfaceModule (3C1206-5)One pair of ST connectors

Coaxial TransceiverInterface Module (3C1206-6)One BNC connector

TP Transceiver InterfaceModule (3C12063)One RJ-45 connector

ISOLAN TRANSCEIVERS

ISOLAN transceivers are an inexpen-sive and flexible way to connect networksegments or integrate a small networkonto a LAN backbone. The TP and fibermicro transceivers are ideal for directconnection to AUI ports. The ISOLANFan Out uses AUI connections to allowup to 64 users to access an Ethernet seg-ment through a single transceiver.ISOLAN Transceiver without taps (3C1114-0)ISOLAN Transceiver with cable-piercing tap for thick Ethernet cable (3C1114-1)ISOLAN Transceiver with N-series tap for cable terminated using N-type connectors (3C1114-2)ISOLAN Transceiver with BNC tap for thin Ethernet cable (3C1114-3)ISOLAN TP Transceiver (3C1681-0)ISOLAN Fiber-Optic Micro Transceiver (ST)(3C1680-5)ISOLAN Diagnostic Fan Out (3C1131-0)Mounting Bracket (for ISOLAN 3C114-x transceivers) (3C1191-7)Universal Mounting Bracket (for ISOLAN 3C1131-0 and ISOLAN3C14xx bridges ) (3C1192-0)Continued on next page

Fiber-Optic and 10BASE-T Transceiver Interface Modules

Ethernet Cabling Token Ring Cabling

CABLES

PVC Transceiver Cables:2 meters (3C110-002)5 meters (16 feet) (3C110-005)10 meters (32 feet) (3C110-010)15 meters (49 feet) (3C110-015)

Teflon Transceiver Cables:4.6 meters (15 feet)IEEE 802.3(3C6156)9.1 meters (30 feet)IEEE 802.3(3C6157)15.2 meters (50 feet)IEEE 802.3(3C6158)22.9 meters (75 feet)IEEE 802.3(3C6159)

Positive Attachment Transceiver Cables:4.6 meters (15 feet)IEEE 802.3(3C6139)9.1 meters (30 feet)IEEE 802.3(3C6140)15.2 meters (50 feet)IEEE 802.3(3C6141)22.9 meters (75 feet)IEEE 802.3(3C6142)Transceiver Cable Adapter (3C6145)Transceiver Attachment Kits replacestandard Ethernet slidelocks and are usedto ensure additional mechanical restraintof the transceiver cable connection.802.3 Alternative Transceiver CableAttachments Kits are available with thefollowing cables:

15-foot cable (3C6193)30-foot cable (3C6194)50-foot cable (3C6195)75-foot cable (3C6196)100-foot cable (3C6197)150-foot cable (3C6198)Transceiver Cable Securing Plate (set of 5) (3C110-ACC)

Thin Ethernet Accessories:Terminator Kit (Two Ohm 50 BNC terminators) (3C535) Barrel Connector (BNC, connects two thin Ethernetsegments) (3C536)T Connector (BNC) (3C539)

10BASE-T(Twisted Pair)100 m maximumsegment length.Hub can haveRJ-45 or Telco RJ-21 connectors.

10BASE-5 (Coaxial, needs transceiver link to hub)500 m maximum segment length. 100 transceivers per segment. 2.5 m transceiver spacing. Absolute maximum of 3 km DTE to DTE path length.

10BASE-2(Coaxial/Thinnet)185 m maximum segment length.Maximum 30 mtransceiver spacing. Abso-lute maximum of 1.4 km DTE to DTE path.

Fiber Optic10BASE-FL (fiber link) supports 2 km over 62.5 m cable.Maximum of 4 km DTE to DTE path.

Active TokenRing(B) Category 3 UTP at 4 Mbps (660 ft/200 m) or 16 Mbps (330 ft/100 m)

(B) Category 4 or5 UTP at 4 Mbps (1320 ft/400 m) or 16 Mbps (660 ft/200 m)

(A) Type 1 STP on 4 Mbps (2000 ft/600 m) or 16 Mbps (1000 ft/300 m)

Token RingExpansionMaximum Main RingLengths

(B) Category 3 UTP at 4 Mbps (660 ft/200 m) or 16 Mbps (330 ft/100 m)

(B) Category 4 or 5 UTPat 4 Mbps (1320 ft/400 m)or 16 Mbps (660 ft/200 m)

(A) Type 1 STP on 4 Mbps(2000 ft/600 m) or 16 Mbps (1000 ft/300 m)

50/125 micron fiber on 4 Mbps (6600 ft/2000 m)or 16 Mbps (6600 ft/2000 m)

62.5/125 micron fiber on 4 Mbps (6600 ft/2000 m)or 16 Mbps (6600 ft /2000 m)

100/140 micron fiber on 4 Mbps (3300 ft/1000 m)or 16 Mbps (3300 ft/1000 m)


Continued from previous page

3Coms Token RingSwitching StrategyHigh-speed, multimedia applicationsdemand ever-increasing levels of LANperformance and traffic segmentation.3Coms switching strategy focuses ondelivering high-speed switching where it is needed on the network, from thedata center to the periphery.

The strategy protects network invest-ment by providing a migration path forhigh-speed technologies while preserv-ing the organizations existing networkinfrastructure.

During 1995, 3Com will announce a broadrange of Token Ring scalable switchingproducts for chassis and stackable con-figurations. The switching architectureis based on the Token Ring SwitchingEngine (TRSE) ASIC, the latest leading-edge integrated chip that enables 3Com to drive switching to new price/performance levels.

Like the ISE-chip for the high-speedEthernet/FDDI LANplex switch productline, the TRSE integrates advancedswitching functionality onto hardware for a low-cost, high-speed switch solu-tion. The resulting Token Ring switchingarchitecture features cut-through andstore-and-forward switching, sourceroute and transparent bridging, 802.1dand IBM Spanning Tree support, flexiblevirtual network configuration, and amigration path to FDDI/ATM.

Intelligent Switches

3Com switches enhance your net-works performance by creatingmicrosegments that are intercon-nected using a high-speed switchingmatrix. Microsegmenting means thata switched node doesnt share band-width with other nodes, even whenthey share the same portwhichtranslates to dramatic increases inperformance.

3Com leads the industry in breadthof switching offerings with a total ofthree product families: LinkSwitch,

LANplex, and CELLplex. Thisbroad choice of options ensures thatyoull get precisely the switchingfunctionality you need.

Network technologies currentlysupported by 3Com switches includeEthernet, 100BASE-T Fast Ethernet,Fiber Distributed Data Interface(FDDI), and Asynchronous TransferMode (ATM). Support for TokenRing switching is also planned.

And you can manage every 3Comswitch with 3Coms Transcend inte-grated management applications.

3Coms LinkSwitch switchesmake performance enhancementseasy at the workgroup level withstackable convenience and plug-and-play simplicity. The LinkSwitchfamily also lets you extend high-speed FDDI, Fast Ethernet, or ATMpipes from Ethernet workgroups to aserver, eliminating desktop-to-serverbottlenecks.

The LANplex family ofworkgroup/departmental and datacenter switches provides peak per-formance and modular, scalable connections for Ethernet and FDDInetworks. And the CELLplex familyuses powerful, state-of-the-art cellswitching technology to deliver low-latency, high-throughput ATM performance on the backbone or inbandwidth-constrained departments.

3Com switches are powered bycustom-designed switching enginesbased on sophisticated application-specific integrated circuits (ASICs).These highly integrated ASICs make switching fast, simple, and economical. They also contribute to a fault-tolerant architecture you can trust with your mission-critical applications.


LinkSwitch Family

LANplex Family

CELLplex Family

Technologies Maximum SuperStack Special Module Part No. Environment Supported Switched Ports Support Options

LinkSwitch 500 3C30500 Workgroup Ethernet (10BASE-T) 10 Ethernet Yes

LinkSwitch 1000 3C16900 Workgroup Ethernet (10BASE-T) 24 Ethernet Yes 100BASE-FXFast Ethernet 1-2 Fast Ethernet Downlink Module, (100BASE-FX Transceiver or 100BASE-TX) Interface Module

LinkSwitch 1200 3C16640 Workgroup Ethernet (UTP) 6 Ethernet Yes FDDI MIC Media FDDI (fiber MIC) 1 FDDI (DAS) Module

LinkSwitch 1200 3C18640 Workgroup Ethernet (backplane) 3 Ethernet No FDDI MIC MediaModule for MSH FDDI (fiber MIC) 1 FDDI Module

3C18645 Workgroup Ethernet (10BASE-T) 6 Ethernet No FDDI MIC MediaModule

LinkSwitch 2200 3C220000 Workgroup Ethernet (10BASE-T) 16 Ethernet YesFDDI (fiber) 1 FDDI (DAS)

LinkSwitch 2700 3C32701 Workgroup Ethernet (10BASE-T) 12 Ethernet YesATM (with OC-3c 1 ATM155 Mbps or withDS-3 45 Mbps)

LANplex 2016 3C201610 Workgroup Ethernet (10BASE-T, 16 Ethernet No(1 power 10BASE-FL, 10BASE-2, supply) 10BASE-5)

3C201620 Workgroup Ethernet (10BASE-T, 16 Ethernet No(2 power 10BASE-FL, 10BASE-2, supplies) 10BASE-5)

Quick Reference Guide to 3Com Switching Products


Technologies Maximum SuperStack Special Module Part No. Environment Supported Switched Ports Support Options

LANplex 2500 3C250100 Department Ethernet (10BASE-T, 16 Ethernet No FDDI Multimode(1 power 10BASE-FL, 10BASE-2, 2 FDDI/CDDI Optical Bypasssupply) 10BASE-5) Switch

FDDI (UTP, fiber)

3C250200 Department Ethernet (10BASE-T, 16 Ethernet No FDDI Multimode (2 power 10BASE-FL, 10BASE-2, 2 FDDI/CDDI Optical Bypass supplies) 10BASE-5) Switch

FDDI (UTP, fiber)

LANplex 6000 3C6012-001 Data Ethernet (10BASE-T, Depends on No Ethernet Switching, (12 slots, center 10BASE-FL, AUI, configuration Ethernet/FDDI 1 power 10BASE-2) Switching, FDDI supply) FDDI (UTP, fiber) Concentration,

Token Ring (STP) Token Ring Switching

3C6012-002 Data Ethernet (10BASE-T, Depends on No Ethernet Switching, (12 slots, center 10BASE-FL, AUI, configuration Ethernet/FDDI 2 power 10BASE-2) Switching, FDDI supplies) FDDI (UTP, fiber) Concentration,


3C6004-001 Data Ethernet (10BASE-T, Depends on No Ethernet Switching, (12 slots, center 10BASE-FL, AUI, configuration Ethernet/FDDI 1 power 10BASE-2) Switching, FDDI supply) FDDI (UTP, fiber) Concentration,


3C6004-002 Data Ethernet (10BASE-T, Depends on No Ethernet Switching, (12 slots, center 10BASE-FL, AUI, configuration Ethernet/FDDI 2 power 10BASE-2) Switching, FDDI supplies) FDDI (UTP, fiber) Concentration,


CELLplex 7000 3C37000 Campus and ATM (with OC-3c 16 ATM Nobuilding 155 Mbps or withbackbone DS-3 45 Mbps)

CELLplex 7200 3C37200 Department Ethernet (10BASE-T) 48 Ethernet NoATM (with OC-3c and 4 ATM; 155 Mbps or with or 8 ATMDS-3 45 Mbps)



SNMP-Based NetworkManagement That CutsComplexity

Transcend Network ManagementSolutions3Coms Transcend family of networkmanagement applications solves thechallenges of configuring, trouble-shooting, expanding, and securingnetwork resources for every device in your networkincluding adapters,hubs, switches, bridge/routers, andremote access servers. Transcend prod-ucts support a broad range of popularmanagement platforms: MicrosoftWindows, Sun MicrosystemsSunNet Manager, HP OpenView,IBMs NetView AIX and OS/2,and Novells NMS. Transcend takesmanagement all the way down tothe desktop level, with hub-port-to-adapter data correlation, PC assetinventory and control, and the ability to group devices accordingto the managers priorities rather than physical device connections.

Transcend Offers Two Levels of Management Transcend Enterprise Manager

integrates a full range of networkactivities, devices, and technologiesfor a building or campus network.

Transcend WorkGroup Managersupports local management forEthernet or Token Ring work-groups.

Transcend Features Transcends support for todays

popular open platforms lets youleverage your current networkmanagement investment anddoesnt lock you into a single-vendor management solution.

Transcends common interfaceacross all device managementapplications lets you integrateadministrative tasks while sim-plifying network coordination;the software presents a commonset of metrics for network optimi-zation and troubleshooting, andwith Virtual Grouping you cangroup PCs in ways that optimizenetwork oversight and control.

Transcend applications match thelook and feel of your current plat-form, eliminating the learningcurve that usually accompaniesnew applications; Transcend canalso be integrated with critical plat-form services like topology map-ping, reporting, and event logging.

Transcend SmartAgent software,built into 3Com manageabledevices, distributes managementtasks to make network manage-ment operations more efficientand increase the power and flex-ibility of standard SNMP agents;SmartAgent intelligence alsoallows you to logically groupdevices for monitoring and control.

A set of Transcend common-tasktools provides consolidated manage-ment aimed at common activitiessuch as universal administrationof all bridging, management ofRMON alarms for diverse devices,and remote software distributionand configuration.

This Product Is Manageable by This Product Part Number Platforms

Transcend Enterprise Manager Version 3.0 for Windows 3C15010C Windows 3.x

Transcend Enterprise Manager Version 2.0 for UNIX 3C27850A SunNet Manager running on SunOS 4.1.x or Solaris 2.3

HP OpenView 3.3 running on HP/UX 9.0, X-Windows (OSF Motif), LAN 9000, ARPA Services 9000, SunOS 4.1.x, or Solaris 2.3

NetView for AIX running on IBM AIX/6000 3.2 or IBM AIX Windows Environment/6000


Transcend Workgroup Manager Version 3.0 for Windows 3C15000D Windows 3.x

Transcend Enterprise Manager Version 2.0 for UNIX 3C27850A SunNET Manager running on SunOS 4.1.x or Solaris 2.3

HP OpenView 3.3 running on HP/UX 9.0, X-Windows (OSF Motif),LAN 9000, ARPA Services 9000, SunOS 4.1.x, or Solaris 2.3



Transcend Workgroup Manager Version 3.0 for Windows 3C15000D Windows 3.x

Transcend Enterprise Manager Version 2.0 for UNIX 3C27850A SunNet Manager running on SunOS 4.1.x or Solaris 2.3 HPOpenView 3.3 running on HP/UX 9.0, X-Windows (OSF Motif), LAN 9000, ARPA Services 9000, SunOS 4.1.x, or Solaris 2.3


Transcend LinkBuilder Token Ring Manager Version 3.0 for OS/2 3C512620 IBM OS/2

LinkBuilder MSH

LinkBuilder FMS IILinkBuilder TP/8iLinkSwitch Switches

LinkBuilder FMS TR


Notes

3Com CorporationP.O. Box 581455400 Bayfront PlazaSanta Clara, CA 95052-8145Phone: 800-NET-3Comor 408-764-5000Fax: 408-764-6740

World Wide Web:http://www.3com.com

3Com ANZA

ANZA East Phone: 61 2 959 3020Fax: 61 2 956 6247

ANZA WestPhone: 61 3 9653 9515Fax: 61 3 9653 9505

3Com Asia Limited

Beijing, ChinaPhone: 8610 8492568Fax: 8610 8492789

Shanghai, ChinaPhone: 86 21 3740220 Ext. 6115Fax: 86 21 3552079

Hong KongPhone: 852 2501 1111Fax: 852 2537 1149

IndonesiaPhone: 6221 523 9181Fax: 6221 523 9156

KoreaPhone: 822 732 4434Fax: 822 732 4437

MalaysiaPhone: 60 3 233 6162Fax: 60 3 233 6174

SingaporePhone: 65 538 9368Fax: 65 538 9369

TaiwanPhone: 886 2 377 5850Fax: 886 2 377 5860

3Com Benelux B.V.

Belgium, LuxembourgPhone: 32 2 716 4880Fax: 32 2 716 4780

NetherlandsPhone: 31 3402 55033Fax: 31 3402 54630

3Com Canada

CalgaryPhone: 403 265 3266Fax: 403 265 3268

MontrealPhone: 514 874 8008Fax: 514 393 1249

TorontoPhone: 416 498 3266Fax: 416 498 1262

VancouverPhone: 604 434 3266Fax: 604 434 3264

3Com European HQPhone: 44 1628 897000Fax: 44 1628 897041

3Com France Phone: 33 1 69 86 68 00 Fax: 33 1 69 07 11 54

3Com GmbH

GermanyPhone: 49 89 627320Fax: 49 89 62732233

PolandPhone: 48 2 6451351Fax: 48 2 6451352

SwitzerlandPhone: 41 31 9984555Fax: 41 31 9984550

3Com IrelandPhone: 353 1 820 7077Fax: 353 1 820 7107

3Com JapanPhone: 81 3 3345 7251Fax: 81 3 3345 7261

3Com Latin America

U.S. HeadquartersPhone: 408-764-6075Fax: 408-764-5730

ArgentinaPhone: 541 312 8612Fax: 541 313 5915

Brazil Phone: 55 11 546 0869Fax: 55 11 247 7399

ChilePhone: 562 633 9242Fax: 562 633 4338

ColombiaPhone: 571 218 3933Fax: 571 226 9770

MexicoPhone: 525 531 0591Fax: 525 254 3159

3Com Northern LatinAmerica

Miami, FloridaPhone: 305-261-3266Fax: 305-261-4901

VenezuelaPhone: 582 261 0710Fax: 582 261 5257

3Com Mediterraneo

Milano, ItalyPhone: 39 2 253011Fax: 39 2 27304244

Rome, ItalyPhone: 39 6 5917756Fax: 39 6 5918969

SpainPhone: 34 1 3831700Fax: 34 1 3831703

3Com Middle EastPhone: 971 4 349049Fax: 971 4 349803

3Com Nordic AB

SwedenPhone: 46 8 632 91 00Fax: 46 8 632 09 05

NorwayPhone: 47 22 18 40 03Fax: 47 22 18 23 85

DenmarkPhone: 45 33 37 71 17Fax: 45 33 32 43 70

FinlandPhone: 358 0 435 420 67Fax: 358 0 435 422 00

3Com South AfricaPhone: 27 11 803 7404/5Fax: 27 11 803 7411

3Com UK Ltd.

BuckinghamshirePhone: 44 1628 897000Fax: 44 1628 897003

ManchesterPhone: 44 161 873 7717Fax: 44 161 873 8053

1995, 3Com Corporation. All rights reserved. 3Com is a publicly owned corporation (NASDAQ:COMS). 3Com, Boundary Routing, LANplex, LinkBuilder, NETBuilder, NETBuilder II, SmartAgent, andTranscend are registered trademarks and CELLplex, FMS, LinkConverter, LinkSwitch, MSH, RingBuilder, and SuperStack are trademarks of 3Com Corporation. Novell and NetWare are registered trademarks of Novell, Inc. SunNet is a trademark of Sun Microsystems, Inc. IBM, NetView, and OS/2 are registered trademarks of International Business Machines Corporation. HP and OpenView are registered trademarks of Hewlett-Packard Company. Windows is a trademark of Microsoft Corporation.

Printed in Canada. 100209-001 8/95

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