Cisco 7609 User Manual

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Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
78-14064-04
Chapter 15 Configuring STP and IEEE 802.1s MST
Configuring STP
Configuring the Hello Time
Note Be careful when using this command. For most situations, we recommend that you use the
spanning-tree vlan vlan_ID root primary and spanning-tree vlan vlan_ID root secondary commands
to modify the hello time.
To configure the STP hello time of a VLAN, perform this task:
This example shows how to configure the hello time for VLAN 200 to 7 seconds:
Router# configure terminal
Router(config)# spanning-tree vlan 200 hello-time 7
Router(config)# end
Router#
This example shows how to verify the configuration:
Router# show spanning-tree vlan 200 bridge
Hello Max Fwd
Vlan Bridge ID Time Age Delay Protocol
---------------- -------------------- ---- ---- ----- --------
VLAN200 49152 0050.3e8d.64c8 7 20 15 ieee
Router#
Configuring the Forward-Delay Time for a VLAN
To configure the STP forward delay time for a VLAN, perform this task:
Command Purpose
Step 1
Router(config)# spanning-tree vlan vlan_ID
hello-time hello_time
Configures the hello time of a VLAN. The hello_time
value can be from 1 to 10 seconds. The vlan_ID value can
be 1 through 4094, except reserved VLANs (see Table 9-1
on page 9-2).
Router(config)# no spanning-tree vlan vlan_ID
hello-time
Reverts to the default hello time.
Step 2
Router(config)# end
Exits configuration mode.
Step 3
Router# show spanning-tree vlan vlan_ID bridge
[detail]
Verifies the configuration.
Command Purpose
Step 1
Router(config)# spanning-tree vlan vlan_ID
forward-time forward_time
Configures the forward time of a VLAN. The
forward_time value can be from 4 to 30 seconds. The
vlan_ID value can be 1 through 4094, except reserved
VLANs (see Table 9-1 on page 9-2).
Router(config)# no spanning-tree vlan vlan_ID
forward-time
Reverts to the default forward time.
Step 2
Router(config)# end
Exits configuration mode.
Step 3
Router# show spanning-tree vlan vlan_ID bridge
[detail]
Verifies the configuration.

Cisco 7609 Specifications

General

Brand	Cisco
Model	7609
Category	Network Router
Language	English