MSTP Control over Ethernet Tunnels

When MSTP is used to control VLANs, a range of VLAN IDs is normally used to specify the VLANs to be controlled on the 7450 ESS and 7750 SR.

If an Ethernet tunnel SAP is to be controlled by MSTP, the Ethernet tunnel SAP ID needs to be within the VLAN range specified under the mst-instance.

vpls 400 customer 1 m-vpls create
            stp
                mode mstp
                mst-instance 111 create
                    vlan-range 1-100
                exit
                mst-name "abc"
                mst-revision 1
                no shutdown
            exit
            sap 1/1/1:0 create // untagged
            exit
            sap eth-tunnel-1 create
            exit
            no shutdown
        exit
        vpls 401 customer 1 create
            stp
                shutdown
            exit
            sap 1/1/1:12 create
            exit
            sap eth-tunnel-1:12 create
                // Ethernet tunnel SAP ID 12 falls within the VLAN
                // range for mst-instance 111
                eth-tunnel
                    path 1 tag 1000
                    path 8 tag 2000
                exit
            exit
            no shutdown
        exit