Mapping And Unmapping Vlans To Mst Instances; Mapping Secondary Vlans To Same Msti As Primary Vlans For Private Vlans - Cisco Nexus 3000 Series Configuration Manual
Nx-os layer 2 switching configuration
guide, release 6.x
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Also See for Nexus 3000 Series:
- Command reference manual (356 pages) ,
- Configuration manual (338 pages) ,
- Installation manual (112 pages)
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Mapping and Unmapping VLANs to MST Instances
Mapping and Unmapping VLANs to MST Instances
When you change the VLAN-to-MSTI mapping, the system restarts MST.
Caution
You cannot disable an MSTI.
Note
For two or more bridges to be in the same MST region, they must have the identical MST name,
VLAN-to-instance mapping, and MST revision number.
Procedure
Step 1
Step 2
Step 3
Step 4
This example shows how to map VLAN 200 to MSTI 3:
switch# configure terminal
switch(config)# spanning-tree mst configuration
switch(config-mst)# instance 3 vlan 200
Mapping Secondary VLANs to Same MSTI as Primary VLANs for Private VLANs
When you are working with private VLANs on the system, all secondary VLANs must be in the same MSTI
and their associated primary VLAN.
Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 6.x
92
Command or Action
switch# configure terminal
switch(config)# spanning-tree mst
configuration
switch(config-mst)# instance
instance-id vlan vlan-range
switch(config-mst)# no instance
instance-id vlan vlan-range
Configuring Multiple Spanning Tree
Purpose
Enters global configuration mode.
Enters MST configuration submode.
Maps VLANs to an MST instance, as follows:
• For instance-id the range is from 1 to 4094.
Instance 0 is reserved for the IST for each MST
region.
• For vlan-range the range is from 1 to 4094.
When you map VLANs to an MSTI, the mapping is
incremental, and the VLANs specified in the
command are added to or removed from the VLANs
that were previously mapped.
Deletes the specified instance and returns the VLANs to
the default MSTI, which is the CIST.
OL-29545-03
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