etherchannel questions

[csalling]

We are using cisco switches in a stacked configuration and to stop mac flapping we have to create etherchannels.  My question is do we create one etherchannel and include the ports from all of the hosts in the cluster or do we create seperate etherchannels for each host?

[rickardnobel]

csalling wrote:

My question is do we create one etherchannel and include the ports from all of the hosts in the cluster or do we create seperate etherchannels for each host?

There must be separate etherchannels into each hosts. If not, lots of frames to VMs will getting forwarded into another host than they really execute on.

[peetz]

You must create one Etherchannel per host (more exactly: even per virtual switch).

For sample configurations and more info: See http://kb.vmware.com/kb/1004048

- Andreas