Cisco Catalyst 4500 Series - Page 293

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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.