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DELL 9.7(0.0) User Manual

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Figure 88. MSTP with Three VLANs Mapped to Two Spanning Tree Instances
Router 1 Running-Configuration
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 1/21
  no ip address
  switchport
  no shutdown
!
interface TenGigabitEthernet 1/31
  no ip address
  switchport
  no shutdown
!
(Step 3)
interface Vlan 100
  no ip address
  tagged TenGigabitEthernet 1/21,31
  no shutdown
!
interface Vlan 200
  no ip address
  tagged TenGigabitEthernet 1/21,31
604
Multiple Spanning Tree Protocol (MSTP)