Configuring Fallback Bridging - Cisco NM-8B-U - HW ROUTERS L-M User Manual

16- and 36-port ethernet switch module for cisco 2600 series, cisco 3600 series, and cisco 3700 series
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16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series

Configuring Fallback Bridging

This section describes how to configure fallback bridging on your switch. It contains this configuration
information:
Understanding the Default Fallback Bridging Configuration
Table 16
Table 16
Feature
Bridge groups
Switch forwards frames for stations that it has
dynamically learned
Bridge table aging time for dynamic entries
MAC-layer frame filtering
Spanning tree parameters:
Creating a Bridge Group
To configure fallback bridging for a set of SVIs or routed ports, these interfaces must be assigned to
bridge groups. All interfaces in the same group belong to the same bridge domain. Each SVI or routed
port can be assigned to only one bridge group. A maximum of 31 bridge groups can be configured on
the switch.
Understanding the Default Fallback Bridging Configuration, page 121
Creating a Bridge Group, page 121
Preventing the Forwarding of Dynamically Learned Stations, page 122
Configuring the Bridge Table Aging Time, page 123
Filtering Frames by a Specific MAC Address, page 124
Adjusting Spanning-Tree Parameters, page 124
Monitoring and Maintaining the Network, page 129
shows the default fallback bridging configuration.
Default Fallback Bridging Configuration
Switch priority
Interface priority
Interface path cost
Hello BPDU interval
Forward-delay interval
Maximum idle interval
Default Setting
None are defined or assigned to an interface. No
VLAN-bridge STP is defined.
Enabled.
300 seconds.
Disabled.
32768.
128.
10 Mbps: 100.
100 Mbps: 19.
1000 Mbps: 4.
2 seconds.
20 seconds.
30 seconds.
Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ
Configuration Tasks
121

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