Posted on 2009-05-13
Let's say you've got the following:
1 blade server in a chassis. It's got two on board cisco switches in the
The blade itself has two NIC's and one connects to one of the onboard
switches and the other connects to the other onboard switch.
Those two switches then connect up to a third switch.
Lastly the two NIC's are teamed and each NIC is spoofed to have the same MAC.
So, going out to the network, it seems pretty simple. I was just wondering
how it's handled when data is being transmitted back to the blade server.
For the third switch, does it have two entries in its table and they have
identical MAC's at different ports? If that's the case, how does the
switch decide to send to which port? Would it just randomly break the
packet stream up or is there some other method? I know some switches need
to be "made aware" of the teaming or is this mandatory all the time?
Also, would this result in duplicate packets being sent to the blade server?