
Configuring DLSw Services
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Figure 2-2. Sample DLSw and SRB Network
For mixed topologies, an end-to-end connection path includes an SRB and a
non-SRB LAN. In such cases, do not exceed the maximum number of SRB LAN
and bridge elements allowed on the SRB LAN side of the connection path. For
detailed information on SRB, refer to Configuring Bridging Services.
Virtual Rings
Just as each physical Token Ring in a source routing network has an associated
ring ID, the DLSw network has a virtual ring ID. You enter this ring ID with the
IP Virtual Ring parameter.
The virtual ring also has an associated MTU size. The Virtual Ring MTU
parameter specifies a maximum size for frames sent from local systems to systems
on remote source routing networks. Use as a value for the MTU the smallest
frame size supported on any remote source routing segment in your network.
You can access and edit the DLSw IP Virtual Ring and Virtual Ring MTU
parameters through the DLSw Global Parameters window.
D
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S
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D
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Router A
D
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D
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R
B
S
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Front-end
processer
LLC2 LLC2
Local termination at
DLSw interfaces only
Frame Relay
(or other SRB
network)
DLS0026A
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