Configuring Fallback Bridging - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 36

Configuring Fallback Bridging

Configuring Fallback Bridging
These sections describe how to configure fallback bridging on your switch:
•
•
•
•
•
•
•
Default Fallback Bridging Configuration
Table 36-1
Table 36-1 Default Fallback Bridging Configuration
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:
•
•
•
•
•
•
Fallback Bridging Configuration Guidelines
A maximum of 31 bridge groups can be configured on the switch.
An interface (an SVI or routed port) can be a member of only one bridge group.
Use a bridge group for each separately bridged (topologically distinct) network connected to the switch.
78-11194-09
Default Fallback Bridging Configuration, page 36-3
Fallback Bridging Configuration Guidelines, page 36-3
Creating a Bridge Group, page 36-4
Preventing the Forwarding of Dynamically Learned Stations, page 36-5
Configuring the Bridge Table Aging Time, page 36-6
Filtering Frames by a Specific MAC Address, page 36-6
Adjusting Spanning-Tree Parameters, page 36-7
shows the 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.
•
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Fallback Bridging
36-3