EtherChannel/trunking On Catalyst 3550

[Roberto Kippins]

Hey I was wondering if i configured two trunk ports on my catalyst 3550  woul the switch use both simultaniously  or will i need to configure etherchannel  on the trunk ports and if so what would the configs look like. Thanks.

[John Blakley]

Roberto,

The only way to load balance across trunk links would be to create a channel-group on those ports.

You could try the following config:

int range fa0/1 - 2

swit trunk encaps dot1q

switch mode trunk

channel-group 1 mode desirable

int po1

swit trunk encaps dot1q

switch mode trunk

channel-group 1 mode desirable

The other side also has to be configured for an etherchannel in order for the link to work. Desirable/Auto enables pagp in Active/Passive (respectively). For lacp, you can use mode Active/Passive for Active/Passive respectively.

HTH,
John

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