Re: Xbox

["Julian Y. Koh" <kohster () NORTHWESTERN EDU>]

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At 14:49 -0600 11/09/2007, Brawner, David wrote:
> Xboxes on our campus have had intermittent
> connection problems to the Xbox Live service supposedly because our MTU
> size is not 1492 (ours is 1500).  But unfortunately, this is not a
> consistent problem, so we have had a hard time nailing it down.

This is a spurious error message that we've seen a lot ourselves.  The main
cause appears to be because the XBox seems to bring down link on the Ethernet
port whenever it's not really sending traffic.  The linkdown event causes the
switch port to get moved back to our quarantine network.  When link comes
back up, it takes long enough for the port to get moved out of quarantine
that the XBox's communication attempt fails.

A fix is to just add a little switch in between the wall port and the XBox.
But technically that's in violation of our network extension policies.


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--
Julian Y. Koh                         <mailto:kohster () northwestern edu>
Network Engineer                                   <phone:847-467-5780>
Telecommunications and Network Services         Northwestern University
PGP Public Key:<http://bt.ittns.northwestern.edu/julian/pgppubkey.html>