Spanning-Tree Mst Hello-Time - Cisco Catalyst 2950 Command Reference Manual

spanning-tree mst hello-time

spanning-tree mst hello-time
Use the spanning-tree mst hello-time global configuration command to set the interval between hello
bridge protocol data units (BPDUs) sent by root switch configuration messages. Use the no form of this
command to return to the default setting.
This command is available only if your switch is running the enhanced software image (EI).
Syntax Description
seconds
Defaults
The default is 2 seconds.
Command Modes
Global configuration
Command History Release
12.1(9)EA1
Usage Guidelines
After you set the spanning-tree mst max-age seconds global configuration command, if a switch does
not receive BPDUs from the root switch within the specified interval, the switch recomputes the
spanning-tree topology. The max-age setting must be greater than the hello-time setting.
Changing the spanning-tree mst hello-time command affects all spanning-tree instances.
Examples
This example shows how to set the spanning-tree hello time to 3 seconds for all MST instances:
Switch(config)# spanning-tree mst hello-time 3
You can verify your settings by entering the show spanning-tree mst privileged EXEC command.
Catalyst 2950 Desktop Switch Command Reference
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spanning-tree mst hello-time seconds
no spanning-tree mst hello-time
Interval between hello BPDUs sent by root switch configuration messages. The
range is 1 to 10 seconds.
Modification
This command was first introduced.
Chapter 2 Cisco IOS Commands
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