
Multiple Instance
Configuring MSTP
Configuring MST Instance Parameters
When you enable MSTP on the switch, a spanning tree instance is enabled automatically. The switch supports up to sixteen configurable MST instances for each VLAN group that you want to operate as an active topology within the region to which the switch belongs. When creating an instance, you must include a minimum of one VID. You can add more VIDs later if desired.
Command | Page |
[no] | |
no |
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Syntax: [no]
Configuring MSTP on the switch automatically configures the IST instance and places all statically and dynamically configured VLANs on the switch into the IST instance. This command creates a new MST instance (MSTI) and moves the VLANs you specify from the IST to the MSTI.
You must map at least one VLAN to an MSTI when you create it. You cannot map a VLAN ID to more than one instance. You can create up to 16 MSTIs in a region.
The no form of the command removes one or more VLANs from the specified MSTI. If no VLANs are specified, the no form of the command deletes the specified MSTI.
When you remove a VLAN from an MSTI, the VLAN returns to the IST instance, where it can remain or be
Note: Starting in software release 13.x.x, you can enter the
This new default behavior differs from automatically including configured (static and dynamic) VLANs in the IST instance and requiring you to manually assign individual static VLANs to an MSTI.