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Re: ping response

To: nv-l@lists.tivoli.com
Subject: Re: ping response
From: Frantsen Christian <cf@INTERNOC.SE>
Date: Thu, 26 Aug 1999 07:57:53 +0200
In my case the netview server and the switch i was trying to ping is on the
same subnet, it's connected with 100mbit fibre to the switch that the
netview servers is connected to.

/Christian

-----Original Message-----
From: Chris J. Garlick [mailto:chris.garlick@EU.EFFEM.COM]
Sent: Wednesday, August 25, 1999 5:44 PM
To: NV-L@UCSBVM.UCSB.EDU
Subject: Re: ping response


...  is it possible that the web server and Netview box are on different IP
segments..?  I have observed cases of messed up routers passing some
sub-protocols (SNMP,  HTTP etc) but not others (eg ICMP (ping).....) ?
The router may have been bounced/reset later, accounting for the mysterious
'fix' ...?

Kind Regards




Please respond to Discussion of IBM NetView and POLYCENTER Manager on
      NetView <NV-L@UCSBVM.ucsb.edu>



 To:      NV-L@UCSBVM.ucsb.edu

 cc:

 Subject: Re: ping response







Just curious - AIX 4.3.2? We had a similar problem a while back. The
problem
just "went away" - I am still puzzled over it. We could not ping a certain
web server from NetView but could ping the server from other hosts. Now to
add to my confusion - all the while that pings were failing I could do SNMP
gets and HTTP requests just fine - only pings were failing. I might add
that
two different ping programs were tried (the AIX supplied one and the public
utility called "fping") - both failed. It was not an arp cache problem. As
mysteriously as the problem appeared it just went away.

Blaine Owens
Eastman Chemical Company
Phone - (423)-229-3579
Fax - (423)-229-1188
bowens@eastman.com

> -----Original Message-----
> From: John Creasey [SMTP:creasey@OZEMAIL.COM.AU]
> Sent: Wednesday, August 25, 1999 9:01 AM
> To:   NV-L@UCSBVM.ucsb.edu
> Subject:      Re: ping response
>
> Recently our network operators reported a very similar thing
> happening.  They were certain an interface was up but netview
> couldn't ping it.  I wasnt present so I was very much baffled
> by their claims.
>
> Have you tried to reproduce the problem?  If it is reproducible
> it could be a bonafide bug.
>
>
> > -----Original Message-----
> > From: Discussion of IBM NetView and POLYCENTER Manager on NetView
> > [mailto:NV-L@UCSBVM.UCSB.EDU]On Behalf Of Frantsen Christian
> > Sent: Wednesday, 25 August 1999 19:26
> > To: NV-L@UCSBVM.UCSB.EDU
> > Subject: ping response
> >
> >
> > I noticed something strange the other day when trying some
> > things in our
> > lab.
> >
> > I unplugged a switch by removing the TP-cord and i got a node down in
> > netview (obviously =))
> > then I put the cord back in and I couldn't ping the switch
> > from the netview
> > map, there was no response,
> > I got response from it if I pinged it from a machine right
> > next to me, I
> > tried again from netview, no response
> > then I made a ping from the commandline on the
> > netview-machine. Now i got a
> > response and after that it worked from the map again.
> >
> > Anyone got some feedback on this?
> >
> > -----------------------------------------
> > Christian Frantsen
> > Technical Operations
> >
> > Internoc Scandinavia AB
> > Tel: +46-36-194843
> > Fax: +46-36-194651
> > http://www.internoc.se
> >


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