Allied-telesis AT-S83 Manual de usuario Pagina 256

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Chapter 13: Spanning Tree Protocol (STP) Commands
256
SPANNING-TREE MAX-HOPS
Syntax
spanning-tree max-hops <1-40>
no spanning-tree max-hops
Parameters
1-40 Indicates the maximum number of hops the BPDU is valid.
Choose a value between 1 and 40.
Description
Use the SPANNING-TREE MAX-AGE command to specify the maximum
allowed hops for a BPDU in an MST region. The value of this command is
used by all instances of MST. The default number of max-hops is 20 (in an
MST region).
Specifying the max hops for a BPDU prevents messages from looping
indefinitely in the network. When a bridge receives a MST BPDU that has
exceeded the allowed max-hops, it discards the BPDU.
To restore the default value of this command, use the no form of this
command.
Command Mode
Configuration Terminal mode
Example
The following commands set the maximum hops to 9:
switch#configure terminal
switch(config)#spanning-tree max-hops 9
Related Commands
none
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