Cisco Systems 3560 Manual De Usuario

Beginning in privileged EXEC mode, follow these steps to configure the switch priority. This procedure 
is optional.

To return the switch to its default setting, use the no spanning-tree mst instance-id priority global 
configuration command.

You can configure the interval between the generation of configuration messages by the root switch by 
changing the hello time.

Beginning in privileged EXEC mode, follow these steps to configure the hello time for all MST 
instances. This procedure is optional.

To return the switch to its default setting, use the no spanning-tree mst hello-time global configuration 
command.

Enter global configuration mode.

spanning-tree mst instance-id priority priority

Configure 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 switch will be chosen as the root switch. 

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.

Return to privileged EXEC mode.

show spanning-tree mst instance-id

Verify your entries.

(Optional) Save your entries in the configuration file.

Enter global configuration mode.

spanning-tree mst hello-time seconds

Configure the hello time for all MST instances. The hello time 
is the interval between the generation of configuration 
messages by the root switch. These messages mean that the 
switch is alive.

For seconds, the range is 1 to 10; the default is 2.

Return to privileged EXEC mode.

Verify your entries.

(Optional) Save your entries in the configuration file.