Spanning-Tree Link-Type - Cisco Catalyst 4500 Series Command Reference Manual

spanning-tree link-type

spanning-tree link-type
To configure a link type for a port, use the spanning-tree link-type command. To return to the default
settings, use the no form of this command.
Syntax Description
point-to-point
shared
Defaults
Link type is derived from the duplex mode.
Command Modes
Interface configuration mode
Command History Release
12.1(12c)EW
Usage Guidelines
RSTP+ fast transition works only on point-to-point links between two bridges.
By default, the switch derives the link type of a port from the duplex mode. A full-duplex port is
considered as a point-to-point link while a half-duplex configuration is assumed to be on a shared link.
If you designate a port as a shared link, RSTP+ fast transition is forbidden, regardless of the duplex setting.
Examples
This example shows how to configure the port as a shared link:
Switch(config-if)# spanning-tree link-type shared
Switch(config-if)#
Related Commands Command
show spanning-tree
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0SG and IOS 15.1(1)SG)
2-944
spanning-tree link-type {point-to-point | shared}
no spanning-tree link-type
Specifies that the interface is a point-to-point link.
Specifies that the interface is a shared medium.
Modification
Support for this command was introduced on the Catalyst 4500 series switch..
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Description
Displays spanning-tree information.
OL-25342 -01