Cisco Nexus 7000 Series Configuration Manual page 132

Configuring a Secondary Root Bridge—CLI Version
With the device configured as the root bridge, do not manually configure the hello time, forward-delay
Note
time, and maximum-age time using the spanning-tree mst hello-time, spanning-tree mst forward-time,
and spanning-tree mst max-age global configuration commands.
Before You Begin
Ensure that you are in the correct VDC (or enter the switchto vdc command).
SUMMARY STEPS
1. config t
2. spanning-tree vlan vlan-range root secondary [diameter dia [hello-time hello-time]]
3. exit
4. (Optional) show spanning-tree vlan vlan_id
5. (Optional) copy running-config startup-config
DETAILED STEPS
Command or Action
Step 1
config t
Example:
switch# config t
switch(config)#
Step 2 spanning-tree vlan vlan-range root secondary
[diameter dia [hello-time hello-time]]
Example:
switch(config)# spanning-tree vlan 5 root
secondary diameter 4
Step 3 exit
Example:
switch(config)# exit
switch#
Step 4 show spanning-tree vlan vlan_id
Example:
switch# show spanning-tree vlan 5
Step 5 copy running-config startup-config
Example:
switch# copy running-config startup-config
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x
116
Configuring Rapid PVST+ Using Cisco NX-OS
Purpose
Enters global configuration mode.
Configures a device as the secondary root bridge. The
vlan-range value can be 2 through 4094 (except for reserved
VLAN values). The dia default is 7. The hello-time can be
from 1 to 10 seconds, and the default value is 2 seconds.
Exits global configuration mode.
(Optional)
Displays the STP configuration for the specified VLANs.
(Optional)
Copies the running configuration to the startup
configuration.