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Configuring Transparent Bridging
Transparent and SRT Bridging Configuration Examples
BC-67
Cisco IOS Bridging and IBM Networking Configuration Guide
Integrated Routing and Bridging with Multiple Bridge Groups Example
In the example illustrated in Figure 15, integrated routing and bridging is used to route and bridge IP
between two bridge groups.
Figure 15 Integrated Routing and Bridging with Multiple Bridge Groups
The following example shows the relevant portions of the configuration for the router in Figure 15:
interface Ethernet 1
bridge-group 1
!
interface Ethernet 2
bridge-group 1
!
interface Ethernet 3
bridge-group 2
!
interface Ethernet 4
bridge-group 2
!
interface BVI 1
ip address 3.0.0.1 255.0.0.0
!
interface BVI 2
ip address 5.0.0.1 255.0.0.0
!
bridge irb
bridge 1 protocol ieee
bridge 1 route ip
bridge 2 protocol ieee
bridge 2 route ip
Transparently Bridged VLANs Configuration Example
The following example shows the configuration for the topology in Figure 9. The “striped” VLAN is
identified as security association identifier 45; the “dot” VLAN is identified as security association
identifier 1008; the “sliced” VLAN is identified as security association identifier 4321. Note that the
assignment of bridge group, interface, and subinterface numbers is of local significance only. You must
coordinate only the configuration of a common Security Association Identifier across bridges.
Bridge
group 1
Bridge
group 2
S4772
BVI
1
3.0.0.1
BVI
2
5.0.0.1
E1
E2
E2
E3