Spanning-Tree Link-Type - Cisco 4500M Command Reference Manual

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches

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
Command History Release
12.1(12c)EW
Usage Guidelines
RSTP+ fast transition only works 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
show spanning-tree
78-16201-01
spanning-tree link-type {point-to-point | shared}
no spanning-tree link-type
Interface is a point-to-point link.
Interface is a shared medium.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
interface
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
spanning-tree link-type
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