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DES-7200 Configuration Guide Chapter 10 MSTP Configuration
10-24
Command Function
DES-7200(config)# spanning-tree
mode mstp/rstp/stp
Switch the spanning tree version.
DES-7200(config)# end
Return to the privileged EXEC mode.
DES-7200# show spanning-tree
Verify the configuration.
DES-7200# copy running-config
startup-config
Save the configuration.
To restore the spanning tree mode to the default value, use the no
spanning-tree mode command in the global configuration mode.
10.3.4 Configuring
Switch Priority
Switch priority allows you to select the root and draw the topology of a network.
It is recommended that administrators set the core device with higher priority (or
smaller value) to facilitate the stablization of the whole network. You can assign
different switch priorities for various instances so that various instances can run
separate spanning tree protocol.Only the priority of CIST (Instance 0) is related
to the devices between different regions.
As mentioned in Bridge ID, there are 16 values for the priority, and all of them
are multiples of 4096, which are 0, 4096, 8192, 12288, 16384, 20480, 24576,
28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and 61440. The
default value is 32768.
To configure switch priority, execute the following command in the global
configuration mode:
Command Function
DES-7200# configure terminal
Enter the global configuration mode.
DES-7200(config)# spanning-tree
[mst instance-id] priority priority
Configure different switch priorities for
different instances. This command
configures the switch priority for instance 0
without the instance-id parameter.
instance-id: ID of the instance in the range
from 0 to 64.
priority: switch priority in the range from 0
to 61440 and is increased by the integral
multiple of 4096, 32768 by default.
DES-7200(config)# end
Return to the privileged EXEC mode.
DES-7200# show running-config
Verify the configuration.