product overview part iv lane services (lsm) pnni, dhcp relay, group mobility, ip multicast...

Product OverviewProduct OverviewPART IVPART IV

Product OverviewProduct OverviewPART IVPART IV

LANE Services (LSM)PNNI, DHCP Relay,

Group Mobility, IP MulticastTriggered IP & IPX

OmniChannel, Omni Switch/Router, Gigabit

2

ATM LANE Service Module (LSM)ATM LANE Service Module (LSM)

LSM module LANE services integrated on the Management LANE services integrated on the Management

Processor Module (MPM)Processor Module (MPM) LES-BUSLES-BUS LECSLECS LECS InterfaceLECS Interface ATM ManagerATM Manager Connection ManagerConnection Manager NI Driver and BUS data forwarding engineNI Driver and BUS data forwarding engine

3

ATM LANE Service Module (LSM)ATM LANE Service Module (LSM)

ILMI MIB

LECS_1

Primary LES/BUS

Backup

LES/BUS

Redundancy VCC

LEC

LECS_2

LECS_1

LECS_2

LES/BUS redundancy

4

ATM LANE Service Module (LSM)ATM LANE Service Module (LSM)

Design constraints one LECS per OmniSwitchone LECS per OmniSwitch each LES-BUS is associated with a single physical each LES-BUS is associated with a single physical

ATM interfaceATM interface maximum of 128 parties on a p2mp connectionmaximum of 128 parties on a p2mp connection maximum of 64 components per ATM physical portmaximum of 64 components per ATM physical port 4MB of flash memory4MB of flash memory no broadcast control management like the MSSno broadcast control management like the MSS

5

ATM LANE Service Module (LSM)ATM LANE Service Module (LSM)

VCC resources constraints 1024 active VCCs – limit of LECs joined1024 active VCCs – limit of LECs joined 1024 p2mp connections – limit of LES-BUS instances1024 p2mp connections – limit of LES-BUS instances

Guideline:

with ASM: maximum of 80 LECS, 4 ELANswith ASM: maximum of 80 LECS, 4 ELANs with ASM-2: maximum of 300 LECS, 10 ELANswith ASM-2: maximum of 300 LECS, 10 ELANs

6

What Is PNNI?What Is PNNI?

A routing protocol multilevel hierarchical routing modelmultilevel hierarchical routing model topology distribution mechanismtopology distribution mechanism generic CAC algorithmgeneric CAC algorithm support UNI 3.1 capabilities (ptp and ptmp)support UNI 3.1 capabilities (ptp and ptmp) enable scalability of hundreds / thousands of enable scalability of hundreds / thousands of

switchesswitches

NNI signaling specification network-to-network signaling based on UNI 3.1network-to-network signaling based on UNI 3.1

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PNNI: private “network-network” or “network-node” interface

Provides the ability to create a scaleable, full- function, dynamic, multi-vendor ATM network

- or-ATM Network ATM Network

PNNIPNNI

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DHCP relayDHCP relay

The UDP Relay feature provides a mechanism for forwarding UDP / IP broadcast packets between VLANs

Useful for DHCP in VLANs

Port PoliciesPort Policies

MAC address PoliciesMAC address Policies

IP Subnet PoliciesIP Subnet Policies

IPX Subnet PoliciesIPX Subnet Policies

Protocol Type PoliciesProtocol Type Policies

Multicast PoliciesMulticast Policies

Authenticated User PoliciesAuthenticated User Policies

DHCP Port PoliciesDHCP Port Policies

DHCP MAC PoliciesDHCP MAC Policies

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DHCP relay with external routerDHCP relay with external router

130.0.0.15

130.0.0.11 130.0.0.12

130.0.0.13

130.0.0.14

Port 2130.0.0.10

DHCP Server125.0.0.2

125.0.0.1125.0.0.3

Port 1 Group 1

BOOTP Relay

OmniSwitch

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DHCP with internal routerDHCP with internal router

130.0.0.15

130.0.0.13

130.0.0.14

DHCP Server125.0.0.2

125.0.0.1 Group 3Group 2

Router

130.0.0.21125.0.0.21

BOOTP Relay

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Group mobility detailsGroup mobility details

AutoTracker supports 96 Groups with 32 VLANs / group

Group mobility adds a new capability to move between groups, rather than only within VLANs Groups are viewed as VLANs, so now we can

configure up to 500 VLANs (really groups) in the OmniSwitch

if there are no users active on the VLAN group then the if there are no users active on the VLAN group then the group is inactivegroup is inactive

when a user attaches and matches the policies, the when a user attaches and matches the policies, the group becomes activegroup becomes active

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Group mobility detailsGroup mobility details

Group mobility also provides dynamic auto-activation of LAN Emulation clients

saves switch resourcessaves switch resources saves network resourcessaves network resources scalable for large networksscalable for large networks a group can have an elan name attribute associated a group can have an elan name attribute associated

with it, so when a group becomes active the with it, so when a group becomes active the associated LEC attaches to the ELANassociated LEC attaches to the ELAN

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How does this all work?How does this all work?

The default group (Group #1) is used as a holding group for all ports participating in group mobility

AutoTracker rules operates the same; just use a AutoTracker rules operates the same; just use a group other than default Group #1 for AutoTracker if group other than default Group #1 for AutoTracker if you are also using group mobilityyou are also using group mobility

all ports on the default group are candidates to move all ports on the default group are candidates to move to one of the configured mobile groups to one of the configured mobile groups

groups now have a new group mobility flag groups now have a new group mobility flag if this flag is set the group is participating in group if this flag is set the group is participating in group

mobility and policies are applied at the group levelmobility and policies are applied at the group level

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OmniSwitch

ELANELAN

ELANELAN

ELANELAN ELANELAN

ELANELAN

ELANELAN

AutoTracker

LANE 1.0Backbone

When a new user comes on-line,AutoTracker observes his traffic andapplies it to policies of definedgroups.

When a new user comes on-line,AutoTracker observes his traffic andapplies it to policies of definedgroups.

Group mobilityGroup mobility

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OmniSwitch

ELANELAN

ELANELAN

ELANELAN ELANELAN

ELANELAN

ELANELAN

AutoTracker

LANE 1.0Backbone

The required Groupis created.

The required Groupis created.

Group mobilityGroup mobility

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OmniSwitch

ELANELAN

ELANELAN

ELANELAN ELANELAN

ELANELAN

ELANELAN

AutoTracker

LANE 1.0Backbone

The switch then joinsthe ELAN mapped tothat Group.

The switch then joinsthe ELAN mapped tothat Group.

Group mobilityGroup mobility

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OmniSwitch

ELANELAN

ELANELAN

ELANELAN ELANELAN

ELANELAN

ELANELAN

AutoTracker

LANE 1.0Backbone

Traffic matching onanother Group isobserved.

Traffic matching onanother Group isobserved.

Group mobilityGroup mobility

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OmniSwitch

ELANELAN

ELANELAN

ELANELAN ELANELAN

ELANELAN

ELANELAN

AutoTracker

LANE 1.0Backbone

The required ELANis joined.

The required ELANis joined.

Group mobilityGroup mobility

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OmniSwitch

ELANELAN

ELANELAN

ELANELAN ELANELAN

ELANELAN

ELANELAN

AutoTracker

LANE 1.0Backbone

HUBHUB

Group Mobility works withshared media hubs sinceAutoTracker providesGroup mapping for bothPorts and MACs.

Group Mobility works withshared media hubs sinceAutoTracker providesGroup mapping for bothPorts and MACs.

Group mobilityGroup mobility

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Group mobilityGroup mobility

AutoTracker rules without group mobility; restricts any port to join only one of 32 VLANS without port reassignments

group mobility expands that to 500 VLANs (groups)group mobility expands that to 500 VLANs (groups) a user can belong to any of 500 groups, and can belong a user can belong to any of 500 groups, and can belong

to multiple groups at the same timeto multiple groups at the same time

Group mobility allows users with multiple stacks to join multiple groups using the same AutoTracker policies

the first policy match becomes the spanning tree the first policy match becomes the spanning tree mastermaster

additional policy matches do not generate BPDUsadditional policy matches do not generate BPDUs

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Server

8 OC-1216 LEC / interface128 Subnets

4 OC-364 LECS

4 OC-364 LECS

ATM SWITCH

A user can join any of 64 subnets dynamicallyA user can join any of 64 subnets dynamically

Group mobility exampleGroup mobility example

IP Multicast RoutingIP Multicast Routing&&

IP Multicast SwitchingIP Multicast Switching (IPMS) (IPMS)

IP Multicast RoutingIP Multicast Routing&&

IP Multicast SwitchingIP Multicast Switching (IPMS) (IPMS)

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What is multicast traffic?What is multicast traffic?

Similar to broadcast traffic

It’s like selective broadcast

Only those that request the traffic get it

Allows a one to many communication rather than one to one

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UnicastUnicast

MulticastMulticast

Multicast versus unicast Multicast versus unicast

unicast sends one packet per destinationunicast sends one packet per destination multicast sends one packet for many destinationsmulticast sends one packet for many destinations

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Why is multicast so great?Why is multicast so great?

It conserves bandwidth Uses for multicast:

resource discovery (OSPF, RIP2, Bootp)resource discovery (OSPF, RIP2, Bootp) multipoint file transfer (Starburst Com.)multipoint file transfer (Starburst Com.) conferencing: many to many (CuSeeMe)conferencing: many to many (CuSeeMe) video netcasting (Precept Software IPTV)video netcasting (Precept Software IPTV) redundant systems (parallel databases)redundant systems (parallel databases) battlefield simulations (parallel processing)battlefield simulations (parallel processing) information distribution in data warehousinginformation distribution in data warehousing

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What is multicast routing?What is multicast routing?

Details: multicast router knows who wants trafficmulticast router knows who wants traffic finds out who is sending the trafficfinds out who is sending the traffic delivers traffic only to those who want itdelivers traffic only to those who want it routers communicate with each other and users to routers communicate with each other and users to

gather the informationgather the information once information is shared, the traffic is sent where it once information is shared, the traffic is sent where it

needs to goneeds to go

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Protocols implementedProtocols implemented

Most commonly used protocols: IGMP (Internet Group Management Protocol)IGMP (Internet Group Management Protocol)

RFC 1112 (V2 described in draft)RFC 1112 (V2 described in draft)

DVMRP (Distance Vector Multicast Routing Protocol)DVMRP (Distance Vector Multicast Routing Protocol) RFC 1075 (v3 described in draft)RFC 1075 (v3 described in draft) used between routers to exchange multicast route used between routers to exchange multicast route

informationinformation

Internet’s MBONE built using these protocols

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Group 1 membership

Group 1 Source

Group 1 membership

DVMRP routing treeDVMRP routing tree

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Group 1 membership

Group 1 Source

Group 1 membership

DVMRP tree after pruningDVMRP tree after pruning

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Why is IPMS so much better?Why is IPMS so much better?

IPMS (IP Multicast Switching):

intercepts IGMP intercepts IGMP packets to track packets to track membership by SVPN membership by SVPN (source virtual port (source virtual port number), rather than number), rather than by networkby network

client application client application requests membership requests membership in a multicast group; in a multicast group; only those members only those members will receive the will receive the multicast trafficmulticast traffic

Traffic is controlled by port rather than by network

Performance significantly improved because forwarding decision is made by network interface

All port forwarding lists are established dynamically; no configuration required

Co-exists with existing multicast VLANs

IP / IPX Filtering IP / IPX Filtering IP / IPX Filtering IP / IPX Filtering

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Triggered IPX supportTriggered IPX support

RFC 2091: only changed info, rather than all info, is sentonly changed info, rather than all info, is sent receiver is able to apply changes immediatelyreceiver is able to apply changes immediately reduced routing traffic and uses less memoryreduced routing traffic and uses less memory no periodic broadcasts of “redundant” informationno periodic broadcasts of “redundant” information

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IP RIP filtersIP RIP filters

RIP inputinput filters control which networks are allowed into the routing control which networks are allowed into the routing

table when IP RIPs are receivedtable when IP RIPs are received

RIP outputoutput filters control the list of networks included in routing control the list of networks included in routing

updates sent out an interface; this controls which updates sent out an interface; this controls which networks the router advertises in its IP RIP updatesnetworks the router advertises in its IP RIP updates

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IPX Watchdog spoofingIPX Watchdog spoofing

Why? to prevent IPX Watchdog packets from initiating to prevent IPX Watchdog packets from initiating

connections on dial-on-demand links when no other connections on dial-on-demand links when no other data is being sentdata is being sent

This feature will allow the Xylan router to respond to a server’s Watchdog requests on behalf of a remote client.

the Watchdog query packet will never cross the WAN the Watchdog query packet will never cross the WAN link if IPX Watchdog spoofing is enabledlink if IPX Watchdog spoofing is enabled

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NetWare Serialization packet filtersNetWare Serialization packet filters

NetWare Serialization packet filtering: If serialization packet filtering is enabled on a WAN If serialization packet filtering is enabled on a WAN

interface, when the router receives a serialization interface, when the router receives a serialization packet, it will drop the packet instead of activating a packet, it will drop the packet instead of activating a dial-up linkdial-up link

NetWare Serialization packets will never cross a WAN NetWare Serialization packets will never cross a WAN link which has filtering enabledlink which has filtering enabled

There is one drawback: this can allow users to bypass Novell’s licensing this can allow users to bypass Novell’s licensing

schemescheme

OmniChannelOmniChannelOmniChannelOmniChannel

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OmniChannel features and benefitsOmniChannel features and benefits

Aggregation of bandwidth

OmniChannel allows OmniChannel allows up to 4 switch ports to up to 4 switch ports to be aggregated together be aggregated together as one high-speed pipe as one high-speed pipe

Existing technology

uses the same existing uses the same existing networking networking technologies available technologies available today, such as Fast today, such as Fast Ethernet Ethernet

Load balancing evenly distributes evenly distributes

network data between network data between all of the aggregated all of the aggregated links links

Scalability OmniChannel OmniChannel

backbones easily scale backbones easily scale from 100 Mbps to 800 from 100 Mbps to 800 MbpsMbps

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OmniChannelOmniChannel

One destination

Many destinations

Load balance on source address

Load balance on destination address

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OmniChannelOmniChannel

How OmniChannel works OmniChannel supports OmniChannel supports

load balancing, load balancing, flooding, spanning tree flooding, spanning tree BPDUs, and a failed BPDUs, and a failed linklink

Load balancing incoming packets are incoming packets are

assigned in a round-assigned in a round-robin fashion to one robin fashion to one OmniChannel link, OmniChannel link, offering even offering even distribution of the distribution of the traffic over each linktraffic over each link

One high-speed pipe a group of a group of

OmniChannel links OmniChannel links behaves exactly as a behaves exactly as a single high-speed linksingle high-speed link

Resiliency sub-second recovery sub-second recovery

in the event of a link in the event of a link failurefailure

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400 Mbps 400 Mbps

800 Mbps A

B C

OmniChannelOmniChannel

High-speed backbone/server solution The following application uses two 400 Mbps The following application uses two 400 Mbps

OmniChannel links into a centralized OmniSwitch; OmniChannel links into a centralized OmniSwitch; the central OmniSwitch then connects to a Sun the central OmniSwitch then connects to a Sun server at 800 Mbpsserver at 800 Mbps

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800 MbpsTotal 400 Mbps

400 Mbps

400 Mbps

A

B C

OmniChannelOmniChannel

Resilient backbone solutions this application uses multiple paths from Switch A to this application uses multiple paths from Switch A to

Switch B for a total of 800 Mbps; an alternate path is Switch B for a total of 800 Mbps; an alternate path is used for two of the backbone links to protect the used for two of the backbone links to protect the backbone from a single catastrophic event, such as a backbone from a single catastrophic event, such as a backhoe break, from bringing down the backbone backhoe break, from bringing down the backbone between Switches A and Bbetween Switches A and B

Omni Switch/RouterOmni Switch/RouterOmni Switch/RouterOmni Switch/Router

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OmniS/R is a powerful Gigabit switchOmniS/R is a powerful Gigabit switch

8

16

32

64

256

256

1 10 100 1000

P-o-SONET

ATM

GE

FR

10/100

TR

22 Gbps switching fabric

12 Mpps layer-three switching

Up to 19 RISC processors

Up to 61 Xylan-designed switching ASICs

Up to 32 Gigabit Ethernet ports

Maximum port densityMaximum port density

44

Mgmt. Processor

Firewall

ATM Uplink Module

OC-12 SAR

LEC(s)

10/100 Ethernet Switching Module

HardwareRtg. Engine

Gigabit Ethernet Switching Module

HardwareRtg. Engine

OmniS/R architectureOmniS/R architecture

OmniS/R system capacity: switching capacity: 22 switching capacity: 22

GbpsGbps sustained: 11.5 Gbpssustained: 11.5 Gbps

OmniS/R distributed layer-three switching

12 million pps12 million pps

22 Gbps Frame Fabric

45

Omni Switch/Router featuresOmni Switch/Router features

Non-blocking frame fabric

On-board switching

Full duplex

Extended burst capacity

Standards-compliant flow control

High-performance routing

Complete network management

46

OmniS/R layer-three switchingOmniS/R layer-three switching

HRE-X: fully distributed, multi-protocol layer-three fully distributed, multi-protocol layer-three

switching ASICswitching ASIC IP and IPXIP and IPX RIP, RIP II, OSPF, RIP, RIP II, OSPF,

IP Multicast, IP Multicast, DCHP relayDCHP relay

12 Mpps / switch12 Mpps / switch

one HRE-X per bladeone HRE-X per blade

ISP-class table sizeISP-class table size 256,000 route entries256,000 route entries 64,000 next-hop destinations64,000 next-hop destinations

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MPX: Management Processor ModuleMPX: Management Processor Module

Management Processor Module for OmniS/R (MPX)

contains a slot for 1 high-speed uplink port, an out-contains a slot for 1 high-speed uplink port, an out-of-band Ethernet port, and the standard front-panel of-band Ethernet port, and the standard front-panel DB-9 console and modem ports.DB-9 console and modem ports.

8MB of Flash, and 16MB RAM standard8MB of Flash, and 16MB RAM standard Supports both OmniS/R and VBUS Supports both OmniS/R and VBUS

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ESX modules for OmniS/RESX modules for OmniS/R

Ethernet and Fast Ethernet OmniS/R modules ESX-100C-12WESX-100C-12W

12-port 10/100BaseTX switching module12-port 10/100BaseTX switching module ESX-100C-12W-L3ESX-100C-12W-L3

12-port 10/100BaseTX switching module with HRE-X12-port 10/100BaseTX switching module with HRE-X ESX-100FM-8WESX-100FM-8W

8-port multimode fiber 100BaseFX switching module8-port multimode fiber 100BaseFX switching module ESX-100FM-8W-L3ESX-100FM-8W-L3

8-port multimode fiber 100BaseFX switching module with HRE-8-port multimode fiber 100BaseFX switching module with HRE-XX

ESX-100FS-8WESX-100FS-8W 8-port single mode fiber 100BaseFX switching module8-port single mode fiber 100BaseFX switching module

ESX-100FS-8W-L3ESX-100FS-8W-L3 8-port single mode fiber 100BaseFX switching module with 8-port single mode fiber 100BaseFX switching module with

HRE-XHRE-X

49

High density ESX modules for OmniS/RHigh density ESX modules for OmniS/R

Ethernet and Fast Ethernet OmniS/R modules ESX-100C-32WESX-100C-32W

32-port 10/100BaseTX switching module, 1K CAM32-port 10/100BaseTX switching module, 1K CAM

ESX-100C-32W-L3ESX-100C-32W-L3 32-port 10/100BaseTX switching module with HRE-X32-port 10/100BaseTX switching module with HRE-X

Features: More than 250 switched 10/100 Ethernet ports in a More than 250 switched 10/100 Ethernet ports in a

single Omni-9 chassissingle Omni-9 chassis IEEE 802.1x Flow Control provides backoff message IEEE 802.1x Flow Control provides backoff message

to sending stations, preventing overflow of input data to sending stations, preventing overflow of input data ports.ports.

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Gigabit Ethernet Modules for OmniS/RGigabit Ethernet Modules for OmniS/R

GSX-FM-2W or 4WGSX-FM-2W or 4W 2-port or 4 port 1000BaseSX Gigabit switching module 2-port or 4 port 1000BaseSX Gigabit switching module

GSX-FM-2W-L3 or 4W-L3GSX-FM-2W-L3 or 4W-L3 2-port or 4 port 1000BaseSX Gigabit switching module with 2-port or 4 port 1000BaseSX Gigabit switching module with

HRE-XHRE-X

GSX-FS-2W or 4WGSX-FS-2W or 4W 2-port or 4 port 1000BaseLX Gigabit switching module 2-port or 4 port 1000BaseLX Gigabit switching module

GSX-FS-2W-L3 or 4W-L3GSX-FS-2W-L3 or 4W-L3 2-port or 4 port 1000BaseLX Gigabit switching module with 2-port or 4 port 1000BaseLX Gigabit switching module with

HRE-XHRE-X

51

Token Ring Switching Modules for OmniS/RToken Ring Switching Modules for OmniS/R

TSX-CD-16W-4CTSX-CD-16W-4C 16 port Token Ring Switching Module, UTP/STP16 port Token Ring Switching Module, UTP/STP

TSX-CD-16W-4C-L3TSX-CD-16W-4C-L3 16 port Token Ring Switching Module, UTP/STP w/ HRE-X16 port Token Ring Switching Module, UTP/STP w/ HRE-X

TSX-CD-32W-4CTSX-CD-32W-4C 32 port Token Ring Switching Module, UTP/STP32 port Token Ring Switching Module, UTP/STP

TSX-CD-32W-4C-L3TSX-CD-32W-4C-L3 32 port Token Ring Switching Module, UTP/STP w/ HRE-X32 port Token Ring Switching Module, UTP/STP w/ HRE-X

TSX-F-8W-4CTSX-F-8W-4C 8 port Token Ring Switching Module, fiber8 port Token Ring Switching Module, fiber

TSX-F-8W-4C-L3TSX-F-8W-4C-L3 8 port Token Ring Switching Module, fiber w/ HRE-X8 port Token Ring Switching Module, fiber w/ HRE-X

52

Wide Area Switching Modules for OmniS/RWide Area Switching Modules for OmniS/R

WSX-S-2W-4CWSX-S-2W-4C 2 port WAN Switching Module; serial ports2 port WAN Switching Module; serial ports

WSX-S-2W-4C-L3WSX-S-2W-4C-L3 2 port WAN Switching Module with HRE-X; serial ports2 port WAN Switching Module with HRE-X; serial ports

WSX-S-4W-4CWSX-S-4W-4C 4 port WAN Switching Module; serial ports4 port WAN Switching Module; serial ports

WSX-S-4W-4C-L3WSX-S-4W-4C-L3 4 port WAN Switching Module with HRE-X; serial ports4 port WAN Switching Module with HRE-X; serial ports

WSX-S-8W-4CWSX-S-8W-4C 8 port WAN Switching Module; serial ports8 port WAN Switching Module; serial ports

WSX-S-8W-4C-L3WSX-S-8W-4C-L3 8 port WAN Switching Module with HRE-X; serial ports8 port WAN Switching Module with HRE-X; serial ports

53

Wide Area Switching Modules for OmniS/RWide Area Switching Modules for OmniS/R

WSX-BRI-SC-1W [2W]-4CWSX-BRI-SC-1W [2W]-4C 1 or 2 serial port BRI WAN Switching module supports PPP 1 or 2 serial port BRI WAN Switching module supports PPP

or Frame Relay or Frame Relay

WSX-BRI-SC-1W [2W]-4C-L3WSX-BRI-SC-1W [2W]-4C-L3 1 or 2 serial port BRI WAN Switching module supports PPP 1 or 2 serial port BRI WAN Switching module supports PPP

or Frame Relay; with HRE-Xor Frame Relay; with HRE-X

WSX-FE1-SC-1W [2W]-4CWSX-FE1-SC-1W [2W]-4C 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both

support PPP or Frame Relay, Fractional E1, supports single support PPP or Frame Relay, Fractional E1, supports single Nx64K cluster and FDL protocolNx64K cluster and FDL protocol

WSX-FE1-SC-1W [2W]-4C-L3WSX-FE1-SC-1W [2W]-4C-L3 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both

support PPP or Frame Relay, Fractional E1, supports single support PPP or Frame Relay, Fractional E1, supports single Nx64K cluster and FDL protocol, with HRE-XNx64K cluster and FDL protocol, with HRE-X

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Wide Area Switching Modules for OmniS/RWide Area Switching Modules for OmniS/R

WSX-FT1-SC-1W [2W]-4CWSX-FT1-SC-1W [2W]-4C 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both

support PPP or Frame Relay, Fractional T1, supports single support PPP or Frame Relay, Fractional T1, supports single Nx64K cluster and FDL protocolNx64K cluster and FDL protocol

WSX-FT1-SC-1W [2W]-4C-L3WSX-FT1-SC-1W [2W]-4C-L3 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both 1 or 2 serial ports, 1 or 2 FE1 ports with integral CSU. Both

support PPP or Frame Relay, Fractional T1, supports single support PPP or Frame Relay, Fractional T1, supports single Nx64K cluster and FDL protocol, with HRE-XNx64K cluster and FDL protocol, with HRE-X

Gigabit EthernetGigabit EthernetDirection for Direction for

OmniStack andOmniStack andVBUSVBUS

Gigabit EthernetGigabit EthernetDirection for Direction for

OmniStack andOmniStack andVBUSVBUS

56

Gigabit EthernetGigabit Ethernet

Xylan’s Gigabit Ethernet family is divided into three different product groups:

Gigabit uplink sub-modulesGigabit uplink sub-modules Gigabit switch access modulesGigabit switch access modules high-speed Gigabit switching modules high-speed Gigabit switching modules

1000Base-SX and 1000Base-LX for multimode and single mode fiber

57

OSGSM-FM-2 2-port Gigabit Ethernet sub-module for the OmniStack 2000, 2-port Gigabit Ethernet sub-module for the OmniStack 2000,

3000, and 5000 families; (1000Base-SX) SC multimode (850nm) 3000, and 5000 families; (1000Base-SX) SC multimode (850nm) fiber for short haulfiber for short haul

OSGSM-FS-2

2-port Gigabit Ethernet sub-module for the OmniStack 2000, 2-port Gigabit Ethernet sub-module for the OmniStack 2000, 3000, and 5000 families; (1000Base-LX) single mode (1330nm) 3000, and 5000 families; (1000Base-LX) single mode (1330nm) fiber for long distancefiber for long distance

1 2

Tx Fx Tx Fx 1 2

ACT

LINK

1000Base-SX

1 2

Tx Fx Tx Fx 1 2

ACT

LINK

1000Base-SX

Gigabit Ethernet for OmniStackGigabit Ethernet for OmniStack

58

Gigabit backbone solutionGigabit backbone solution

59

Gigabit Ethernet applicationGigabit Ethernet application