Chapter 17
| Spanning Tree Commands
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Example
This example disables the spanning tree algorithm for port 5.
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree spanning-disabled
Console(config-if)#
spanning-tree
tc-prop-stop
This command stops the propagation of topology change notifications (TCN). Use
the no form to allow propagation of TCN messages.
Syntax
[no] spanning-tree tc-prop-stop
Default Setting
Disabled
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
When this command is enabled on an interface, topology change information
originating from the interface will still be propagated.
This command should not be used on an interface which is purposely configured in
a ring topology.
Example
Console(config)#interface ethernet 1/1
Console(config-if)#spanning-tree tc-prop-stop
Console(config-if)#
spanning-tree
protocol-migration
This command re-checks the appropriate BPDU format to send on the selected
interface.
Syntax
spanning-tree protocol-migration interface
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-32/54)
port-channel channel-id (Range: 1-16/27)
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