oess-users

[Justin Ettore <>]

I just captured port 6633. If more is needed let me know.

Thanks

Justin Ettore

Network Engineering – ISC

University of Pennsylvania 

From: AJ Ragusa <>
Date: Friday, February 13, 2015 at 10:14 AM
To: "" <>
Subject: Re: [oess-users] impaired link status

Hi Justin

The logs are useful but I think we are going to also need a pcap of the controller communication to determine what is happening.

My guess just from looking at your logs is that the following error is part of the problem.

13 09:38:53 oess-test nox: 00006|org.nddi.openflow:ERR handling error from 44573645711808, xid = 263

Can you do a pcap of the controller communication and send it to me.

Thanks
A.J.

On 2/13/15 10:03 AM, Justin Ettore wrote:
> There is no /var/log/oess.log file, but there is a directory /var/log/oess
> but that is empty also.  I attached the messages log from the last 20
> minutes since I started OESS again.  At 9:38-9:39 it finds the link but
> determines it is down.
> Feb 13 09:38:52 oess-test /usr/bin/oess-fvd.pl[1700]: [2015/02/13
> 09:38:52] /usr/share/perl5/vendor_perl/OESS/FV.pm 392 OESS.FV - Forwarding
> verification for link: Hulk-Baker has not been verified yet... still
> unknown
> Feb 13 09:38:52 oess-test nox: 00004|nox:ERR no datapath with id
> 288a1c51a9c0 registered at nox
>
>
> Found the lines above.  Also whenever I reboot the system NOX does not
> start.  I restart all of the services when I reboot and its fine then.  I
> don¹t know if that could be related to the problem.
>
>
> Thanks
> Justin Ettore
> Network Engineering ­ ISC
> University of Pennsylvania
>
>
>
>
> On 2/13/15, 9:34 AM, "Andrew Ragusa" wrote:
>

Hi Justin

Impared means that Forwarding Verification has determined that it can
no longer transmit packets from one switch to the other over the link.

Logs in /var/log/messages and /var/log/oess.log should provide some
details as to why.

Thanks
A.J.


On 2/13/15 9:25 AM, Justin Ettore wrote:
>>> I¹m troubleshooting a link between a Brocade MLXe and Juniper MX.
>>> Earlier I was able to get the link into an up status and deploy a
>>> circuit across it.  As I made a few changes the link wen down and
>>> then to impaired.  I have backed out my changes but still remain in
>>> an impaired state.  Are there logs that can help me or something
>>> else to identify whats happening?
>>>
>>> Thanks Justin Ettore Network Engineering ­ ISC University of
>>> Pennsylvania

>

Attachment: dump.pcap
Description: dump.pcap