Giuseppe Larosa Sun, 09/21/2008 - 11:08
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Hello Raul,


look at the following link:


http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_46_se/configuration/guide/swethchl.html#wpxref12539


this is for a C3750 IOS based switch.


the member links must have the same config about speed, duplex, access vlan (if access port) or native vlan and list of permitted vlans (if a L2 trunk link)


A L3 etherchannel can be configured by configuring the logical interface port-channel X.


Very important for L2 trunks all changes in the list of permitted vlans has to be done on the logical port-channel X and not on the single member links otherwise some instabilities can occur.


Hope to help

Giuseppe


glen.grant Sun, 09/21/2008 - 14:45
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If you have ports of the same speed ,duplex etc it can be as simple as putting " channel-group X mode desirable or channel-group X mode active if you want to use LACP " on the ports you want to use .

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