Thus spake David A. Kotz on Mon, Jan 26, 2009 at 01:43:58PM -0600:
One of my users tried submitting a job several times and got the
following each time. It seems like emulab is timing out waiting for a
response from the experimental switch, but this is the only job that has
produced the error. We've started up several others before and since
with no problems.
All I can think of is that it must have been some kind of transient loss
of connectivity - assuming you only have one expt. switch (right?), this
particular check should happen for any expt. that uses the switch, and
shouldn't be dependant at all on the set of ports, VLANs, etc. used.