Multiple Instance Spanning-Tree Operation

Configuring MSTP

Configuring MSTP Operation Mode and Global Settings

The commands in this section apply at the switch (global) level. For details of how to configure spanning tree settings on individual ports, see “Configuring MSTP Per-Port Parameters” on page 4-26.

MSTP Global Command

Page

spanning-tree

*

config-name < ascii-string>

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config-revision < revision-number>

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force-version < stp-compatible rstp-operation mstp-operation>

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forward-delay

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hello-time < 1..10 >

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legacy-mode

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legacy-path-cost

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max-hops < hop-count>

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maximum-age

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pending

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priority

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trap errant-bpdu

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*Enabling MSTP operation using the spanning-treeglobal command is the final step in the configuration process. See “Enabling or Disabling Spanning Tree Operation” on page 4-40.

Syntax: [no] spanning-tree config-name < ascii-string>

This command resets the configuration name of the MST region in which the switch resides. This name can include up to 32 nonblank characters and is case-sensitive. On all switches within a given MST region, the configuration names must be identical. Thus, if you want more than one MSTP switch in the same MST region, you must configure the identical region name on all such switches. If you retain the default configuration name on a switch, it cannot exist in the same MST region with another switch.

(Default Name: A text string using the hexadecimal representation of the switch’s MAC address)

The no form of the command overwrites the currently configured name with the default name.

Note: This option is available only when the switch is configured for MSTP operation. Also, there is no defined limit on the number of regions you can configure.

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