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
dual-active detection (virtual switch)
channel-group configuration associated with it.
• If a trusted port is changed to a virtual switch port, the trust mode configuration is deleted when the
port becomes restricted and the following warning message is displayed:
Port-channel num is a trusted port-channel for PAgP
dual-active detection. Deletion of this
port-channel has deleted the dual-active trust
channel-group configuration associated with it.
• If you enter the dual-active detection pagp trust port-channel command on a virtual switch port
channel, the following error message is displayed:
Cannot configure dual-active trust mode on a virtual switch port-channel
Examples The following example shows how to configure interfaces for PAgP dual-active detection:
Router(config)# switch virtual domain domain-id
Router (config-vs-domain)# dual-active detection pagp
Router (config-vs-domain)#
The following example shows how to specify that EtherChannel/port bundling to be used for PAgP
dual-active detection:
Router(config)# switch virtual domain domain-id
Router (config-vs-domain)# dual-active detection pagp trust port-channel 20
Router (config-vs-domain)#
The following example shows how to configure an interface for fast hello dual-active detection:
Router(config)# switch virtual domain domain-id
Router (config-vs-domain)# dual-active detection
Router (config-vs-domain)# exit
Router(config)# interface fastethernet 1/2/40
Router(config-if)# dual-active
WARNING: Interface FastEthernet1/2/40 placed in restricted config mode. All extraneous
configs removed!
Router(config-if)# no shutdown
Related Commands Command Description
show switch virtual (virtual switch) Displays information about dual-active detection
configuration and status.

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