Hi,
i) You using vmxnet3 drivers? if not i would
ii) Would use LACP if your switches have the capability http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004048 (more a nice to have though as you mentioned the other vm's ok
iii) Take a look http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1009517 too
Many tx
