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| Sun Ethernet Fabric Operating System ### VLAN Administration Guide

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## Enable STP Packet Tunneling

If dot1q-tunneling is enabled on a port, you can enable BPDU tunneling on that port.

1. Enable tunneling of STP BPDUs.

       SEFOS# configure terminal
       SEFOS(config)# interface extreme-ethernet 0/15
       SEFOS(config-if)# switchport mode access
       SEFOS(config-if)# switchport mode dot1q-tunnel
       SEFOS(config-if)# spanning-tree disable
       SEFOS(config-if)# l2protocol-tunnel stp

2. Review the configuration details.

       SEFOS# show l2protocol-tunnel
        COS for Encapsulated STP Packet : 7
        Port  Protocol  Encapsulation Counter  Decapsulation Counter
       ----  --------  ---------------------  ---------------------
       Ex0/15     stp          0                    0
       Ex0/15     gvrp         0                    0

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