Concept Guide

tagged TenGigabitEthernet 2/11,31
no shutdown
Router 3 Running-Conguration
This example uses the following steps:
1 Enable MSTP globally and set the region name and revision map MSTP instances to the VLANs.
2 Assign Layer-2 interfaces to the MSTP topology.
3 Create VLANs mapped to MSTP instances tag interfaces to the VLANs.
(Step 1)
protocol spanning-tree mstp
no disable
name Tahiti
revision 123
MSTI 1 VLAN 100
MSTI 2 VLAN 200,300
!
(Step 2)
interface TenGigabitEthernet 3/11
no ip address
switchport
no shutdown
!
interface TenGigabitEthernet 3/21
no ip address
switchport
no shutdown
!
(Step 3)
interface Vlan 100
no ip address
tagged TenGigabitEthernet 3/11,21
no shutdown
!
interface Vlan 200
no ip address
tagged TenGigabitEthernet 3/11,21
no shutdown
!
interface Vlan 300
no ip address
tagged TenGigabitEthernet 3/11,21
no shutdown
Example Running-Conguration
This example uses the following steps:
1 Enable MSTP globally and set the region name and revision map MSTP instances to the VLANs.
2 Assign Layer-2 interfaces to the MSTP topology.
3 Create VLANs mapped to MSTP instances tag interfaces to the VLANs.
(Step 1)
spanning-tree
spanning-tree configuration name Tahiti
spanning-tree configuration revision 123
spanning-tree MSTi instance 1
spanning-tree MSTi vlan 1 100
spanning-tree MSTi instance 2
spanning-tree MSTi vlan 2 200
Multiple Spanning Tree Protocol (MSTP)
643