OS10 Enterprise Edition User Guide Release


spanning-tree mst

Configures an MST instance and determines root and bridge priorities.

spanning-tree mst instance number priority | root {primary | secondary}
  • instance number — Enter an MST instance number (0 to 63).
  • priority priority value — Set a bridge priority value in increments of 4096 (0 to 61440). Valid 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.
  • root — Enter a primary or secondary root.
  • primary — Enter a device as a primary root.
  • secondary — Enter a device as a secondary root.
Not configured
Command Mode
Usage Information
The MSTP determines the root bridge but you can assign one bridge a lower priority to increase the probability it being the root bridge. A lower priority-value increases the probability of the bridge becoming a root bridge. The no version of this command resets the value to the default.
OS10(config)# spanning-tree mst 0 priority 0
                                       OS10(config)# spanning-tree mst 2 root primary
Supported Releases
10.2.0E or later

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