Spanning Tree Commands
4-147
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Command Usage
This command sets the maximum time (in seconds) the root device will wait
before changing states (i.e., discarding to learning to forwarding). This delay is
required because every device must receive information about topology
changes before it starts to forward frames. In addition, each port needs time to
listen for conflicting information that would make it return to the discarding
state; otherwise, temporary data loops might result.
Example
spanning-tree hello-time
This command configures the spanning tree bridge hello time globally for this switch.
Use the no form to restore the default.
Syntax
spanning-tree hello-time time
no spanning-tree hello-time
time - Time in seconds. (Range: 1-10 seconds).
The maximum value is the lower of 10 or [(max-age / 2) -1].
Default Setting
2 seconds
Command Mode
Global Configuration
Command Usage
This command sets the time interval (in seconds) at which the root device
transmits a configuration message.
Example
Related Commands
spanning-tree forward-time (4-146)
spanning-tree max-age (4-147)
Console(config)#spanning-tree forward-time 20
Console(config)#
Console(config)#spanning-tree hello-time 5
Console(config)#
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