Mode

To be compatible with the different iterations of the IEEE 802.1D standard, the 7210 SAS-R6 and 7210 SAS-R12 support several variants of the Spanning Tree protocol:

• rstp

  Rapid Spanning Tree Protocol (RSTP) compliant with IEEE 802.1D-2004 - default mode.

• dot1w

  compliant with IEEE 802.1w

• comp-dot1w

  operation as in RSTP but backwards compatible with IEEE 802.1w (this mode was introduced for interoperability with some MTU types).

• mstp

  compliant with the Multiple Spanning Tree Protocol specified in IEEE 802.1Q REV/D5.0-09/2005. This mode of operation is only supported in an mVPLS.

• pmstp

  compliant with the Multiple Spanning Tree Protocol specified in IEEE 802.1Q REV/D3.0-04/2005 but with some changes to make it backwards compatible to 802.1Q 2003 edition and IEEE 802.1w.

See section Spanning tree operating modes for details on these modes.

config>service>vpls service-id# stp
    mode {rstp | comp-dot1w | dot1w | mstp | pmstp}

Default: rstp