3.12.1. instance (MST)

Syntax

instance instance-id vlan vlan-list

no instance instance-id vlan vlan-list

Parameter

instance-id The MSTP instance ID from 0 to 15.

vlan vlan-list Add the VLAN list to the MSTP instance.

Default

All VLANs are mapped to the Common and Internal Spanning Tree (CIST)instance (instance 0).

Mode

MST Configuration

Usage

To map the VLAN to the Multiple Spanning Tree (MSTP) instances, use the command instance in the MST Configuration mode; and use the no form of the command to restore its default configuration.

All VLANs that are not explicility configured to an MSTP instance are mapped to the CIST instance (instance 0). For two or more switches in the samp MSTP regiom, their VLAN mapping, name and revision number configuration, must be the same.

Example

The following example maps the vlan 10-20 to the MSTP instance 1, and VLAN 100 to instance 2.

Switch(config)# spanning-tree mst configuration
Switch(config-mst)# instance 1 vlan 10-20
Switch(config-mst)# instance 2 vlan 100