This is what I sent my manager to explain what has happened:
"As I suspected all our vmnics are active and esx is using IP hash to loadbalance between them - so esx decides what interface to send vm traffic out based on the source/destination ip address of the traffic - this means vm traffic (from the same vm) will be spread out across all 4 vmnics, so this is why Jason was seeing 'flapping' on the switches.
This was a recent change as they were originally setup as active/passive
These need to be changed back to its originall configuration if we want stability back, unless they were changed for a reason ?"
This is the response I got for the above statement from a network guy my manager has asked to look into it.
"To load balance both ends must be configured in an etherchannel bundle. With this in place load balancing works and no flaps should be seen.
Can we verify the physical patching and also the ESX config as if all is present and correct we shouldn't see these flaps (which are continuing)"
I dont understand as it just looks like he is repeating what I said in a different way but not really clear what he meant
