ETHERCHANNEL CONFIGURATION
- Go into interface configuration or interface range configuration to group several interfaces an put this command
channel-group (id) mode (depends on the protocol we will use)
- modes:
- active : initiate negotiaition (LACP)
- auto : waits for negociation (PAgP)
- desirable: initiate negotiaition (PAgP)
- on : Enable etherchannel only
- pasive: waits for negociation (LACP)
- show etherchannel summary
- show us the status of the channel, the port members, the negotiation protocol (LACP, PAgP, - (on))
- show etherchannel load-balance : show us the balance method (src-mac, src-ip, etc)
- port-channel load-balance (load balance method): set the load balance method (src-mac, src-ip, etc)
- show lacp neighbor: show us information about the port channel neighbors
TROUBLESHOOTING
- Maybe one of the members of the portchannel is connected to a different switch and bacause of that the portchannel is not coming up
- Check with "show lacp neighbor" if all the menbers are connected to the same destination switch
- This only applies if you are working with single chassis etherchannel
- To avoid loops use a portchannel protocol (the same on both sides), mode "on" will not detect loops
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