You cannot have loop.
Usally each "virtual port" on the vSwitch has only one uplink.
Team is simply done, splitting some "virtual port" on different uplink.
The only execption is when you use "Route based on IP hash" team policy. But in this case you have to configure your ports on physical switch with 802.3ad link aggregation.
Andre
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Andre | http://about.me/amauro | http://vinfrastructure.it/ | @Andrea_Mauro
