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C
OMMAND
L
INE
I
NTERFACE
4-194
Default Setting
auto
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• Specify a point-to-point link if the interface can only be connected to
exactly one other bridge, or a shared link if it can be connected to two
or more bridges.
• When automatic detection is selected, the switch derives the link type
from the duplex mode. A full-duplex interface is considered a
point-to-point link, while a half-duplex interface is assumed to be on
a shared link.
• RSTP only works on point-to-point links between two bridges. If you
designate a port as a shared link, RSTP is forbidden.
Example
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 - This is device 1.
- port - Port number. (Range: 1-26/52)
• port-channel channel-id (Range: 1-4)
Command Mode
Privileged Exec
Console(config)#interface ethernet 1/5
Console(config-if)#spanning-tree link-type point-to-point