Nexus OS STP “diameter”特性

NX-OS provides the diameter keyword, and if needed, adjusts these timers
according to best practices. In this topology, a single-tier Layer 2 design is implemented
with access switches connecting to both aggregation switches; therefore, the maximum
number of bridges between any two stations (diameter) is 3. If no diameter is specified,
the default of 7 applies. By specifying the diameter of the spanning tree domain, hello,
forward-delay, and max-age timers are adjusted for optimal reconvergence in the event
that a spanning tree recalculation occurs.

Example 2-29 demonstrates how the diameter keyword is used to manipulate spanning
tree timers.

Congo(config)# spanning-tree vlan 1-10 root primary diameter 3
Congo(config)# spanning-tree vlan 11-20 root secondary diameter 3
-----------------------------------------------------------------------------
Egypt(config)# spanning-tree vlan 1-10 root primary diameter 3
Egypt(config)# spanning-tree vlan 11-20 root secondary diameter 3

转自秦柯blog

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