Friday, September 10, 2010

Beacon Probing

When using Beacon Probing to detect vSwitch uplink path failures, 3+ uplinks are needed to accurately detect a bad path. In the event that ESX(i) cannot detect with guaranteed certainty which path has gone bad, such as in the case of using only 2 pNICs with Beacon Probing, the hypervisor will "shotgun" traffic down all pNIC uplinks, hoping the frames will reach their intended destination on at least 1 of the paths.
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