Hi Nick,

At one point it time when the system that fv was on was really bogged
down I was able to do show openflow 1750 and it said backoff, idle,
connecting, backoff but now that I have restarted flowvisor I can't
seem to catch it. When this message prints from nox I quickly hit
entry on show openflow 1750 but I still says active.

The switch in question here is 130.127.39.131


At the machine running FV I have this going:

while [ 1 -eq 1 ] ; do netstat -a | grep "39.131" | grep ESTAB -v ; done
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%13:35160 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%13:62919 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%14:35160 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%14:62919 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%15:35160 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%15:62919 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%15:35160 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%15:62919 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%14:35160 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%14:62919 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%15:35160 TIME_WAIT
tcp6       0      0 expedient.clemson.:6633 130.127.39.131%15:62919 TIME_WAIT

It seems the TCP connect gets to the TIME_WAIT state so the connection
between the switch (130.127.39.131) actually closed.

(netstat seems to hang for a while so I didn't catch anything else.
Also everything I pasted above is what came out of netstat after the
error occurred and after that flashed it was able to go to ESTABLISHED
again.


P.S: Any idea why its using tcp6 sockets? It has a ipv4 address.

Thanks,

Aaron

On Thu, Jul 14, 2011 at 8:43 PM, Nicholas Bastin <[email protected]> wrote:
> On Thu, Jul 14, 2011 at 19:37, Aaron Rosen <[email protected]> wrote:
>> It seems like the switch was actually connecting and disconnecting to
>> flowvisor.
>
> Is it really connecting/disconnecting from FV, or just NOX?
>
> --
> Nick
>



-- 
Aaron O. Rosen
Masters Student - Network Communication
306B Fluor Daniel
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