Quick Reference Guide

Spanning Tree (STP) Commands | 325
The instance mstid is a number in the range 0-63 that corresponds to the desired existing multiple
spanning tree instance.
0–61440 is the priority value, representing a range of 0 to 61440 in increments of 4096.
If 0 (defined as the default CIST ID) is passed as the mstid, this command sets the bridge priority
parameter to a new value for the common and internal spanning tree. The bridge priority value is a
number within a range of 0 to 61440. The twelve least significant bits will be masked, in accordance
with the 802.1s specification. This causes the priority to be rounded down to the next lower valid
priority.
The no version of this command sets the bridge priority for a specific multiple spanning tree instance
to the default value, in other words, 32768.
Default
32768
Mode
Global Config; Interface Range, which is indicated by the (conf-if-range-interface)# prompt, such as
(conf-if-range-vlan 10-20)#.
Command
History
spanning-tree msti vlan
This command adds an association between a multiple spanning tree instance and a VLAN. The VLAN
will no longer be associated with the common and internal spanning tree.
Syntax
[no] spanning-tree msti vlan msti vlanid
The mstid is a number that corresponds to the desired existing multiple spanning tree instance. The
vlanid corresponds to an existing VLAN ID.
The no version of this command removes an association between a multiple spanning tree
instance and a VLAN. The VLAN will again be associated with the common and internal
spanning tree. The instance
mstid is a number that corresponds to the desired existing multiple
spanning tree instance. The
vlanid corresponds to an existing VLAN ID.
Mode
Global Config
Command
History
Version 2.5.1
Modified: Revised syntax from
spanning-tree mst priority mstid; changed the range.
Version 2.3 Added Interface Range mode.
Related
Commands
interface Identifies an interface and enters the Interface Config mode.
interface range Defines an interface range and accesses the Interface Range mode
Version 2.5.1
Modified: Revised syntax from
spanning-tree mst vlan mstid vlanid