Cisco Systems 7600 manual Configuring the EtherChannel Min-Links Feature, 12-12

Chapter 12 Configuring EtherChannels

Configuring EtherChannels

Configuring the EtherChannel Min-Links Feature

Note Release 12.2(18)SXF and later releases support the EtherChannel Min-Links feature.

The EtherChannel Min-Links feature is supported on LACP EtherChannels. This feature allows you to configure the minimum number of member ports that must be in the link-up state and bundled in the EtherChannel for the port channel interface to transition to the link-up state. You can use the EtherChannel Min-Links feature to prevent low-bandwidth LACP EtherChannels from becoming active. This feature also causes LACP EtherChannels to become inactive if they have too few active member ports to supply your required minimum bandwidth.

To configure the EtherChannel Min-Links feature, perform this task:

	Command	Purpose
Step 1
	Router(config)# interface port-channel group_number	Selects an LACP port channel interface.
Step 2
	Router(config-if)#port-channel min-links number	Configures the minimum number of member ports that
		must be in the link-up state and bundled in the
		EtherChannel for the port channel interface to
		transition to the link-up state.
	Router(config-if)#no port-channel min-links	Reverts to the default number of active member ports
		(one).
Step 3
	Router(config-if)# end	Exits configuration mode.
Step 4
	Router# show running-config interface type1	Verifies the configuration.
	slot/port
	Router# show interfaces type1 slot/port etherchannel

Note Although the EtherChannel Min-Links feature works correctly when configured only on one end of an EtherChannel, for best results, configure the same number of minimum links on both ends of the EtherChannel.

This example shows how to configure port channel interface 1 to be inactive if fewer than 2 member ports are active in the EtherChannel:

Router# configure terminal

Router(config)# interface port-channel 1

Router(config-if)#port-channel min-links 2

Router(config-if)# end

Tip For additional information (including configuration examples and troubleshooting information), see the documents listed on this page:

http://www.cisco.com/en/US/products/hw/routers/ps368/tsd_products_support_series_home.html

	Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
12-12	OL-4266-08