Multiple Spanning Tree Protocol (MSTP)

MSTP (802.1s) ensures that only one active path exists between any two nodes in a spanning-tree instance. A spanning-tree instance comprises a unique set of VLANs. MSTP instances significantly improve network resource utilization while maintaining a loop-free environment.

Configuration commands

(switch#) Enable MSTP (default mode for spanning-tree):

spanning-tree
spanning-tree mode mstp
spanning-tree mst revision 1
spanning-tree mst name mellanox

Show commands to validate functionality

(switch#)

show spanning-tree

Expected results

  • spanning-tree mode is configured.
  • spanning-tree is enabled, if loops are detected ports should go blocked state.
  • spanning-tree splits traffic domain between two DUTs.

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