Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
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.
spanning-tree link-type {point-to-point | shared}
no spanning-tree link-type
Syntax Description
Defaults Link type is derived from the duplex mode.
Command Modes Interface configuration mode
Command History
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
point-to-point Specifies that the interface is a point-to-point link.
shared Specifies that the interface is a shared medium.
Release Modification
12.1(12c)EW Support for this command was introduced on the Catalyst 4500 series switch..
Command Description
show spanning-tree Displays spanning-tree information.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E