perfSONAR User Q&A and Other Discussion

[Nicolas Simar <>]

The problem is probably not about disabling the feature (if this is the 
problem), but more about establishing one and only one session with the 
router and ensure it is being killed after some time. But the diagnosis 
will have to be given by Stijn.

Nicolas

Frederic LOUI wrote:
> Nicolas Simar a écrit :
>
> > Frederic LOUI wrote:
> >
> > > Hello,
> > >
> > > In the frame of PerfSONAR bundle 2.1 deployment, I'm currently 
> > > testing TELNET/SSH 1.2 MP web services
> > > However, I'm facing 2 major issues and I would need additional user 
> > > experiences.
> > >
> > > 1) The first issue is that I can retrieve command result through 
> > > CISCO/TELNET (login/password) method
> > >    but CISCO/SSH (login/password) method does not work.
> > >    ==> I tested CISCO/SSH method in both production and testbed 
> > > environment but no luck.
> > >    Please find hereattached to this mail the log in catalina.out file
> > >
> > > 2) Second issue, in CISCO/TELNET (and maybe SSH) mode, the web 
> > > service does not release the vty properly after having executed the 
> > > command.
> > >    ==> The direct consequence is that the router is running out of 
> > > VTY access and the router is no more accessible.
> > >    ==> The only way to release the VTY is to either issue "clear line 
> > > vty xx" command  through the router console port access or to stop 
> > > and start the TELNET/SSH MP.
> >
> >
> >
> > There might be a feature which leave the connection open for some 
> > times. This was suggested by Simon Leinen for fastening the 
> > communication with the router. A connection is open and is left open 
> > for few minutes as when a problem is being troubleshooted, you often 
> > send multiple commands to a router. Now I would expect the telnet/SSH 
> > MP to keep using that opened session.
> > I am not sure that it is what creates the issue you are observing.
> >
> > Nicolas
> >
> > > Anyone experienced such issues ?
> > >
> > > Thanks in advance for your help.
> > > Best regards/Frederic
> > >
> > >
> > > ------------------------------------------------------------------------
> > >
> > >
> > >
> > > ...
> > > [SshManager] connecting initiated ...
> > > com.jcraft.jsch.JSchException: session is down
> > >         at com.jcraft.jsch.Session.openChannel(Unknown Source)
> > >         at 
> > > org.perfsonar.service.measurementPoint.remote.ssh.SshManager.executeCommand(Unknown 
> > > Source)
> > >         at 
> > > org.perfsonar.service.measurementPoint.lookingGlassType.bgp.adapters.CiscoSshBgpAdapter.executeCommand(Unknown 
> > > Source)
> > >         at 
> > > org.perfsonar.service.measurementPoint.lookingGlassType.bgp.adapters.CiscoSshBgpAdapter.takeAction(Unknown 
> > > Source)
> > >         at 
> > > org.perfsonar.service.measurementPoint.lookingGlassType.engine.adapters.CiscoSshAdapter.takeAction(Unknown 
> > > Source)
> > >         at 
> > > org.perfsonar.service.measurementPoint.lookingGlassType.engine.adapters.RequestExecutingThread.run(Unknown 
> > > Source)
> > >
> > >
> > > ...
>
> Hi Nicolas:
>
> Thanks for this information. I'll wait Stijn to confirm that this 
> feature exist.
> And check with him the behavoiour of the TELNET / SSH MP.
> If so, would investigate how to disable it.
> Because, in our condition it can prevent NOC to get an access to the 
> equipment.
>
> Hi Stijn:
>
> What is your recommendation ?
> Could we have a call in order to discuss that issue ?
> I have prepared a lab environnment, just tell me when you're available ! 
> ;-)
>
> Everyone in the MDM pilot: (And maybe everyone
>
> Did you test the TELNET / SSHP MP and does it work like expected ?
> (Especially CISCO SSH LOGIN/PASSWORD METHOD ...)
>
> Thanks to all in advance for your help
> Cheers/Frederic

--
Nicolas
______________________________________________________________________

Nicolas Simar
Network Engineer

DANTE - www.dante.net

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