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DLSw Implementation Notes

2-7

Figure 2-5. Router Logical Considerations for DLSw Support

The internal LAN is not an actual network, but you must account for it in topology

calculations for SRB environments. The internal LAN also has an associated ID

that you enter when you conﬁgure the source routing bridge global parameters for

DLSw operation.

Refer to Conﬁguring Routers or Conﬁguring Bridging Services for more

information on the internal LAN ID.

Count the internal LAN only once per source routing segment. (Ensure that the

Group LAN ID is the same for all Bay Networks routers in the same source

routing segment.)

Counting the DLSw Bridge

Each DLSw peer in your network implements a DLSw bridge between the

internal LAN and the IP virtual ring. (Refer to Figure 2-5.) The DLSw bridge is

part of the router software, not an actual bridge. You must, however, count this as

one bridge in a source routing segment.

Source routing bridge software DLSw software

Bridge

Ring 1

Bridge 1Ring 2Bridge 2

Internal LAN DLSw Bridge

Virtual Ring

Token 

Ring

Circuit

Token 

Ring

Circuit

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Avaya Configuring DLSw Services Manual do Utilizador Página 45