Chapter 19
| Spanning Tree Commands
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Default Setting
All ports and trunks belong to a common group.
Command Mode
Global Configuration
Command Usage
A port can only belong to one group. When an interface is added to a group, it is
removed from the default group. When a TCN BPDU or BPDU with the TC flag set is
received on an interface, that interface will only notify members in same group to
propagate this topology change.
Example
Console(config)#spanning-tree tc-prop group 1 ethernet 1/1-5
Console(config)#
spanning-tree
transmission-limit
This command configures the minimum interval between the transmission of
consecutive RSTP/MSTP BPDUs. Use the no form to restore the default.
Syntax
spanning-tree transmission-limit count
no spanning-tree transmission-limit
count - The transmission limit in seconds. (Range: 1-10)
Default Setting
3
Command Mode
Global Configuration
Command Usage
This command limits the maximum transmission rate for BPDUs.
Example
Console(config)#spanning-tree transmission-limit 4
Console(config)#
max-hops This command configures the maximum number of hops in the region before a
BPDU is discarded. Use the no form to restore the default.
Syntax
max-hops hop-number
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