nic teaming

Is there any way I can check this from my end (vmware)?

The Host cannot check what configuration is on the switch.....how would it? does your ESXi host have an admin/password to login and control your physical switch! - so I'm afraid no!

The configuration of teaming on the ESXi host, only affects the outbound traffic from the host.

Inbound traffic to the host, is controlled by the configuration of the physical switch.

So configuration on the host (teaming policy) needs to match the configuration on the switch.

see here (the top three articles are very important, if you are not a Network Guy, or Network Manager, speak nicely to yours!)

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004088

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004048

http://blog.scottlowe.org/2006/12/04/esx-server-nic-teaming-and-vlan-trunking/

http://blog.scottlowe.org/2008/07/16/understanding-nic-utilization-in-vmware-esx/

http://blog.scottlowe.org/2008/09/05/vmware-esx-nic-teaming-and-vlan-trunking-with-hp-procurve/