Configuring The Mst Port Priority - Cisco Nexus 7000 Series Configuration Manual

Configuring the MST Port Priority

Command or Action
Step 3
exit
Example:
switch(config)# exit
switch#
Step 4 show spanning-tree mst
Example:
switch# show spanning-tree mst
Step 5
copy running-config startup-config
Example:
switch(config)# copy running-config
startup-config
This example shows how to configure the priority of the bridge to 4096 for MSTI 5:
switch# config t
switch(config)# spanning-tree mst 5 priority 4096
switch(config)# exit
switch#
Configuring the MST Port Priority
If a loop occurs, MST uses the port priority when selecting an interface to put into the forwarding state. You
can assign lower priority values to interfaces that you want selected first and higher priority values to the
interface that you want selected last. If all interfaces have the same priority value, MST puts the interface
with the lowest interface number in the forwarding state and blocks the other interfaces.
Before You Begin
Ensure that you are in the correct VDC (or enter the switchto vdc command).
SUMMARY STEPS
1. config t
2. interface {{type slot/port} | {port-channel number}}
3. spanning-tree mst instance-id port-priority priority
4. exit
5. (Optional) show spanning-tree mst
6. (Optional) copy running-config startup-config
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x
160
Purpose
Priority values are 0, 4096, 8192, 12288, 16384, 20480, 24576,
28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and
61440. The system rejects all other values.
Exits global configuration mode.
(Optional)
Displays the MST configuration.
(Optional)
Copies the running configuration to the startup configuration.
Configuring MST Using Cisco NX-OS