Installation guide

Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
How to Configure EtherSwitch HWICs
49
Cisco IOS Release 12.3(8)T4
OL-6454-01
Understanding the Default Fallback Bridging Configuration
Table 2 shows the default fallback bridging configuration.
Creating a Bridge Group
To configure fallback bridging for a set of SVIs, these interfaces must be assigned to bridge groups. All
interfaces in the same group belong to the same bridge domain. Each SVI can be assigned to only one
bridge group.
Beginning in privileged EXEC mode, follow these steps to create a bridge group and assign an interface
to it.
SUMMARY STEPS
1. configure terminal
2. no ip routing
3. bridge bridge-group protocol vlan-bridge
4. interface interface-id
5. bridge-group bridge-group
6. end
7. show vlan-bridge
8. show running-config
9. copy running-config startup-config
Table 2 Default Fallback Bridging Configuration
Feature Default Setting
Bridge groups None are defined or assigned to an interface. No
VLAN-bridge STP is defined.
Switch forwards frames for stations that it has
dynamically learned
Enabled.
Bridge table aging time for dynamic entries 300 seconds.
MAC-layer frame filtering Disabled.
Spanning tree parameters:
• Switch priority
• Interface priority
• Interface path cost
• Hello BPDU interval
• Forward-delay interval
• Maximum idle interval
• 32768.
• 128.
• 10 Mbps: 100.
100 Mbps: 19.
1000 Mbps: 4.
• 2 seconds.
• 20 seconds.
• 30 seconds.