Etherchannel on Cisco IOS Catalyst Switch

Hi Hans,

The default is src mac based load balancing.

From SW1’s perspective this is a great choice as each computer has a different MAC address. Traffic from the computers will be load balanced when it is sent from SW1 to SW2.

From SW2 to SW1, it’s another story. The MAC address of the router remains the same so using src mac based load balancing is not a good idea. All traffic will be sent using the same physical interface. It’s better to change it to dst mac address load balancing since the destination MAC address will be one of the four computers.

The same principle applies to L3 yes.

When your etherchannel is overloaded, you will see drops yes.

Rene

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