Configuring The Forward-Delay Time For A Vlan - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 23 Configuring STP and MST
This example shows how to verify the configuration:
Switch# show spanning-tree vlan 200 bridge brief
Vlan
---------------- -------------------- ---- ---- -----
VLAN200
Switch#

Configuring the Forward-Delay Time for a VLAN

Exercise care when configuring forward-delay time. In most cases, we recommend that you use the
Note
spanning-tree vlan vlan_ID root primary and the spanning-tree vlan vlan_ID root secondary
commands to modify the forward delay time.
To configure the spanning tree forward delay time for a VLAN, perform this task:
Command
Step 1
Switch(config)# [no] spanning-tree vlan vlan_ID
forward-time forward_time
Step 2
Switch(config)# end
Step 3
Switch# show spanning-tree vlan vlan_ID bridge
[brief]
This example shows how to configure the forward delay time for VLAN 200 to 21 seconds:
Switch# configure terminal
Switch(config)# spanning-tree vlan 200 forward-time 21
Switch(config)# end
Switch#
This example shows how to verify the configuration:
Switch# show spanning-tree vlan 200 bridge brief
Vlan
---------------- -------------------- ---- ---- -----
VLAN200
Switch#
This example shows how to display spanning tree information for the bridge:
Switch# show spanning-tree bridge
Vlan
---------------- --------------------------------- -----
VLAN200
VLAN202
VLAN203
VLAN204
VLAN205
VLAN206
Switch#
Bridge ID
49152 0050.3e8d.64c8
Bridge ID
49152 0050.3e8d.64c8
49152 0050.3e8d.64c8
49152 0050.3e8d.64c9
49152 0050.3e8d.64ca
49152 0050.3e8d.64cb
49152 0050.3e8d.64cc
49152 0050.3e8d.64cd
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Hello Max Fwd
Time Age Delay
2 36 15
Purpose
Configures the forward time of a VLAN. The
forward_time value can be from 4 to 30 seconds.
Use the no keyword to restore the defaults.
Exits configuration mode.
Verifies the configuration.
Hello Max Fwd
Time Age Delay
2 20 21
Hello
Bridge ID
Protocol
--------
ieee
Protocol
--------
ieee
Max Fwd
Time Age Dly Protocol
--- --- --------
2 20 15 ieee
2 20 15 ieee
2 20 15 ieee
2 20 15 ieee
2 20 15 ieee
2 20 15 ieee
Configuring STP
23-19