perfSONAR User Q&A and Other Discussion

[Frederic LOUI <>]

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

--
Frederic LOUI / GIP RENATER

Service de Suivi Operationnel / Metrologie & QoS
Network Operations Service / Metrology & QoS

Tel: +33 1 53 94 20 82 / Fax: +33 1 53 94 20 31
 http://www.renater.fr