Specifying The Configuration On An Mst Region - Cisco Nexus 9000 Series Configuration Manual

Configuring MST Using Cisco NX-OS

Specifying the Configuration on an MST Region

If two or more devices are to be in the same MST region, they must have the same VLAN-to-instance mapping,
the same configuration revision number, and the same MST name.
A region can have one member or multiple members with the same MST configuration; each member must
be capable of processing IEEE 802.1w RSTP BPDUs. There is no limit to the number of MST regions in a
network, but each region can support only up to 65 MST instances. You can assign a VLAN to only one MST
instance at a time.
Procedure
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Command or Action
config t
Example:
switch# config t
switch(config)#
spanning-tree mst configuration
Example:
switch(config)# spanning-tree mst
configuration
switch(config-mst)#
instance instance-id vlan vlan-range
Example:
switch(config-mst)# instance 1
vlan 10-20
name name
Example:
switch(config-mst)# name region1
revision version
Example:
switch(config-mst)# revision 1
exit or abort
Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
Specifying the Configuration on an MST Region
Purpose
Enters configuration mode.
Enters MST configuration submode.
Maps VLANs to an MST instance as follows:
• For instance-id, the range is from 1 to 4094.
• For vlan vlan-range, the range is from 1 to 3967.
When you map VLANs to an MST instance, the
mapping is incremental, and the VLANs specified
in the command are added to or removed from the
VLANs that were previously mapped.
To specify a VLAN range, enter a hyphen; for example,
enter the instance 1 vlan 1-63 command to map VLANs
1 through 63 to MST instance 1.
To specify a VLAN series, enter a comma; for example,
enter the instance 1 vlan 10, 20, 30 command to map
VLANs 10, 20, and 30 to MST instance 1.
Specifies the instance name. The name string has a
maximum length of 32 characters and is case sensitive.
Specifies the configuration revision number. The range
is from 0 to 65535.
• exit
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