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Dell SmartFabric OS10 User Guide Release 10.5.3

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spanning-tree mst

Configures an MST instance and determines root and bridge priorities.

Syntax
spanning-tree mst instance number priority | root {primary | secondary}
Parameters
  • instance number — Enter an MST instance number, from 0 to 63. For Z9332F-ON platform, enter a MST instance value from 0 to 61.
  • priority priority value — Set a bridge priority value in increments of 4096, from 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.
Default
Not configured
Command Mode
CONFIGURATION
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.
Example 
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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