Configure Port-Channel Interfaces

1. Enable port channeling, and create the port channel (1 in this example).

   SEFOS# configure terminal
   SEFOS(config)# set port-channel enable
   SEFOS(config)# interface port-channel 1
   SEFOS(config-if)# no shutdown

2. Configure the port.

   SEFOS(config)# interface extreme-ethernet 0/3
   SEFOS(config-if)# no shutdown

3. Configure the physical port in the port channel, and specify the mode by which the port becomes part of the port channel.

   SEFOS(config-if)# channel-group channel_group_number mode mode_value
   SEFOS(config-if)# end

   where:

   • channel_group_number can be 1 to 64. Each port channel can have up to eight compatibly configured Ethernet interfaces.

   • mode_value can be:

     • active - LACP negotiation is started unconditionally.

     • passive - LACP negotiation is started only when an LACP packet is received from the peer.

     • on - Forces the interface to be a part of the port channel without communicating through the LACP protocol. This value is equivalent to manual aggregation.

4. Review the etherchannel information to ensure that the values for the channel group and the mode have changed in both switches.

   The following output has been truncated for readability. The output in both switches should be the same.

   SEFOS# show etherchannel 1 detail
    
   ...
   -------------
   Port State = Up in Bundle
   Channel Group : 1
   Mode : Active
   Port-channel = Po1
   ...

5. If the port channel interface is not present, you must create it by typing these commands.

   SEFOS# configure terminal
   SEFOS(config)# interface port-channel port_number
   SEFOS(config-if)# no shutdown
   SEFOS(config-if)# end

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   Note - Verify the LACP feature by enabling LACP (Active or Passive) on both actor and partner sides. If LACP is enabled on the actor side and manual on the partner side (or vice versa), LACP results in inconsistent behavior. Thus, you must avoid this misconfiguration.

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