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SRB Configuration Examples
BC-154
Bridging and IBM Networking Configuration Guide
Assume that the following configuration for SRB and transparent bridging existed before you
wanted to enable SR/TLB:
interface tokenring 0
source-bridge 1 1 2
!
interface tokenring 1
source-bridge 2 1 1
!
interface ethernet 0
bridge-group 1
!
interface ethernet 0
bridge-group 1
!
bridge 1 protocol dec
To enable SR/TLB, one aspect of this configuration must change immediately—a third ring must be
configured. Before SR/TLB, the two Token Ring interfaces were communicating with two-port local
source-route bridging; after SR/TLB, these two interfaces must be reconfigured to communicate
through a virtual ring, as follows:
source-bridge ring-group 10
!
interface tokenring 0
source-bridge 1 1 10
!
interface tokenring 1
source-bridge 2 1 10
!
interface ethernet 0
bridge-group 1
!
interface ethernet 1
bridge-group 1
!
bridge 1 protocol dec
Now you are ready to determine two things:
• A ring number for the pseudo-ring that is unique throughout the source-route bridged network.
For the preceding example configuration, use the number 3.
• A bridge number for the path to the pseudo-ring. For the preceding example configuration, use
the number 1.