Hi I have found the response to this question :In a Gigastack configuration, it is not possible to use ports on different switches to form one etherchannel. The ports must be on the same switch to form the etherchannelThanks
Hi You can clear the xlate table with the command clear xlate or you can change the timeout of the xlate (by default it is set to 3 hours) with the command timeout xlate 0:05:00 (5 min per example)MohammedRegards