Cisco 7604 User Manual

19-24
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 19 Configuring Standard-Compliant IEEE MST
Configuring MST
To configure the switch priority, perform this task:
To return the router to its default setting, use the no spanning-tree mst instance_id priority global
configuration command.
Configuring the Hello Time
You can configure the interval between the generation of configuration messages by the root bridge by
changing the hello time.
Note Exercise care when using this command. For most situations, we recommend that you use the
spanning-tree mst instance_id root primary and the spanning-tree mst instance_id root secondary
global configuration commands to modify the hello time.
To configure the hello time for all MST instances, perform this task:
Command Purpose
Step 1
Router# configure terminal
Enters global configuration mode.
Step 2
Router(config)# spanning-tree mst instance_id
priority priority
(Optional) Configures the switch priority.
• For instance_id, you can specify a single instance, a
range of instances separated by a hyphen, or a series
of instances separated by a comma. The range is 0 to
4094.
• For priority, the range is 0 to 61440 in increments of
4096; the default is 32768. The lower the number, the
more likely the router will be chosen as the root
bridge.
Priority values are 0, 4096, 8192, 12288, 16384,
20480, 24576, 28672, 32768, 36864, 40960, 45056,
49152, 53248, 57344, and 61440. All other values
are rejected.
Step 3
Router(config)# end
Returns to privileged EXEC mode.
Step 4
Router# show spanning-tree mst instance_id
Verifies your entries.
Step 5
Router# copy running-config startup-config
(Optional) Saves your entries in the configuration file.
Command Purpose
Step 1
Router# configure terminal
Enters global configuration mode.
Step 2
Router(config)# spanning-tree mst hello-time
seconds
(Optional) Configures the hello time for all MST
instances. The hello time is the interval between the
generation of configuration messages by the root bridge.
These messages mean that the router is alive.
For seconds, the range is 1 to 10; the default is 2.
Step 3
end
Returns to privileged EXEC mode.

Cisco 7604 Specifications

General

Brand	Cisco
Model	7604
Category	Network Router
Language	English