Stp Root Secondary - H3C S3100 Series Command Manual

Hide thumbs Also See for S3100 Series:

Table of Contents

stp root secondary

stp [ instance instance-id ] root secondary [ bridge-diameter bridgenum

centi-seconds ] ]

undo stp [ instance instance-id ] root

instance-id: MSTI ID ranging from 0 to 16. The value of 0 refers to the CIST.

bridgenum: Network diameter of the specified spanning tree. This argument ranges from 2 to 7 and

defaults to 7.

centi-seconds: Hello time in centiseconds of the specified spanning tree. This argument ranges from

100 to 1,000 and defaults to 200.

Use the stp root secondary command to configure the current switch as a secondary root bridge of a

specified MSTI.

Use the undo stp root command to cancel the current configuration.

By default, a switch does not operate as a secondary root bridge.

If you do not specify the instance-id argument, the two commands apply to only the CIST.

You can configure one or more secondary root bridges for an MSTI. If the switch operating as the root

bridge fails or is turned off, the secondary root bridge with the least MAC address becomes the root

You can specify the network diameter and the hello time of the switch when you are configuring it as a

secondary root bridge. The switch will then figure out the other two time parameters: forward delay and

max age. If the instance-id argument is specified to 0 in this command, the current switch is configured

as the secondary root bridge of the CIST. You can configure only one root bridge for an MSTI but you

can configure one or more secondary root bridges for an MSTI.

Once a switch is configured as the root bridge or a secondary root bridge, its priority cannot be modified.

# Configure the current switch as a secondary root bridge of MSTI 4, setting the network diameter of the

switched network to 5 and the hello time of the current switch to 300 centiseconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] stp instance 4 root secondary bridge-diameter 5 hello-time 300

[ hello-time

Table of Contents