Configuration Example: Implementing MVRP with Per-VLAN RSTP
In the following figure, a core device is attached to three edge devices. Each of the edge devices is attached to other edge devices or host stations. The effects of MVRP in this network depend on the devices where the feature is enabled.
In this configuration, the edge devices advertise their statically configured VLANs to the core device. The Core Device does not have any statically configured VLANs, but learns the VLANs from the edge devices.
Per-VLAN Spanning Tree Protocol (PVST) is enabled
by default on the MVRP untagged VLAN. To enable the MVRP dynamic VLAN to be Rapid
Spanning Tree enabled, enable the MVRP functionality globally (using the
mvrp enable command), then configure the mvrp spanning-tree
802-1w command.
Enter the following commands on the Core Device.
core-device(config)# mvrp enable core-device(config)# mvrp spanning-tree 802-1w core-device(config)# interface ethernet 1/2/1 to 1/2/3 core-device(config-mif-1/2/1-1/2/3)# mvrp enable core-device(config-mif-1/2/1-1/2/3)# mvrp point-to-point
Enter the following commands on Edge Device A.
Enable SSTP, SRSTP, STP, or RSTP on the edge devices (where VLANs are configured statically) according to the network requirement.
deviceA(config)# vlan 20 deviceA(config-vlan-20)# untagged ethernet 1/1/1 Added untagged port(s) ethernet 1/1/1 to port-vlan 20. deviceA(config-vlan-20)# spanning-tree 802-1w deviceA(config)# vlan 40 deviceA(config-vlan-40)# untagged ethernet 1/1/2 Added untagged port(s) ethernet 1/1/2 to port-vlan 40. deviceA(config-vlan-40)# spanning-tree 802-1w deviceA(config)# mvrp enable deviceA(config)# interface ethernet 1/2/1 deviceA(config-if-e40000-1/2/1)# mvrp enable deviceA(config-if-e40000-1/2/1)# mvrp point-to-point deviceA(config-if-e40000-1/2/1)# exit
These commands statically configure two port-based VLANs and enable MVRP on port 1/2/1.
Enter the following commands on Edge Device B.
deviceB(config)# vlan 20 deviceB(config-vlan-20)# untagged ethernet 1/1/1 Added untagged port(s) ethernet 1/1/1 to port-vlan 20. deviceB(config-vlan-20)# spanning-tree 802-1w deviceB(config)# vlan 30 deviceB(config-vlan-30)# untagged ethernet 1/1/2 Added untagged port(s) ethernet 1/1/2 to port-vlan 30. deviceB(config-vlan-30)# spanning-tree 802-1w deviceB(config)# mvrp enable deviceB(config)# interface ethernet 1/2/1 deviceB(config-if-e40000-1/2/1)# mvrp enable deviceB(config-if-e40000-1/2/1)# mvrp point-to-point deviceB(config-if-e40000-1/2/1)# exit
Enter the following commands on Edge Device C.
deviceC(config)# vlan 30 deviceC(config-vlan-30)# untagged ethernet 1/1/1 Added untagged port(s) ethernet 1/1/1 to port-vlan 30. deviceC(config-vlan-30)# spanning-tree 802-1w deviceC(config)# vlan 40 deviceC(config-vlan-40)# untagged ethernet 1/1/2 Added untagged port(s) ethernet 1/1/2 to port-vlan 40. deviceC(config-vlan-40)# spanning-tree 802-1w deviceC(config)# mvrp enable deviceC(config)# interface ethernet 1/2/1 deviceC(config-if-e40000-1/2/1)#mvrp enable deviceC(config-if-e40000-1/2/1)# mvrp point-to-point deviceC(config-if-e40000-1/2/1)# exit
Use the command show mvrp to display the MVRP summary information:
core-device# show mvrp --------------------------------------------------------------------------- Total configured mvrp ports : 2 Global Status : Enabled Dynamic VLAN Creation : Enabled Spanning-tree : Spanning-tree 802-1w Join-timer(in ms) : 200 Leave-timer(in ms) : 1000 Leaveall-timer(in ms) : 10000 MVRP untagged VLAN : 1 MVRP Port(s) : ethe 1/2/1 to 1/2/3 MVRP active topology port(s) : ethe 1/2/1 to 1/2/3 ---------------------------------------------------------------------------
Use the command show mvrp ethernet to verify the MVRP configuration of specific ports including the applicant mode, forbidden VLANs, and point-to-point setting:
core-device# show mvrp ethernet 1/1/24 --------------------------------------------------------------------------- MVRP Status : Enabled Join-timer(in ms) : 200 Leave-timer(in ms) : 1000 Leave-all-timer(in ms) : 10000 P2p : Yes Applicant Mode : Normal-participant --------------------------------------------------------------------------- Registered Vlan(s) : 1 20 30 40 Declared Vlan(s) : 1 Forbidden Vlan(s) : ---------------------------------------------------------------------------