Rob, they were Lanplex 2500s. Don't remember the specific level of code we
were at when we had the problem but we are now at 8.1.1-33 and do not have
the problem.
Blaine Owens
Eastman Chemical Company
Phone - (423)-229-3579
Fax - (423)-229-1188
bowens@eastman.com
> -----Original Message-----
> From: Rob Napholz [SMTP:tel1rxn@njcmail.ups.com]
> Sent: Thursday, August 26, 1999 11:04 AM
> To: NV-L@UCSBVM.ucsb.edu
> Subject: Re: RES: ping response
>
> What model/s switch and what level of code did you see this problem ?
>
>
>
> "Owens, Blaine C" wrote:
> >
> > AIX answer - "arp -d ipname" will delete the existing arp table entry
> and
> > force a new arp discovery request. You mentioned in a prior note 3Com
> > switches. I recall we were having some problems with some 3Com switches
> some
> > time back. I wrote a script to create permanent arp entries for each of
> > these and it circumvented the problem. It must've been the level of code
> in
> > the 3Com switches because I no longer have to do this and haven't seen
> this
> > particular problem in some time now.
> >
> > Blaine Owens
> > Eastman Chemical Company
> > Phone - (423)-229-3579
> > Fax - (423)-229-1188
> > bowens@eastman.com
> >
> > > -----Original Message-----
> > > From: Leslie Clark [SMTP:lclark@us.ibm.com]
> > > Sent: Thursday, August 26, 1999 10:25 AM
> > > To: NV-L@UCSBVM.ucsb.edu
> > > Subject: Re: RES: ping response
> > >
> > > Marcos, this sounds reasonable to me, but I'm a software person. If
> this
> > > is what is going on, what should we be doing in Netview to make them
> come
> > > back as quickly as possible? Status polling is just doing a ping,
> which
> > > is
> > > apparently not enough. Force a new-node discovery poll? Is this
> related
> > > to the setting on the server's interface card regarding broadcast? I
> have
> > > recently been instructed by Support to make sure the Token Ring card
> > > has the 'confine broadcast to local token-ring' to 'no'. I have not
> > > checked
> > > that at the customer I mentioned in my other note who was having a
> > > similar problem.
> > >
> > > Cordially,
> > >
> > > Leslie A. Clark
> > > IBM Global Services - Systems Mgmt & Networking
> > >
> > >
> > >
> > > Frantsen
> > >
> > > This problems happens because when you4ve unpluged this port the entry
> in
> > > the switch ARP-table and Netview ARP-table were refreshed (possible
> > > deleted). Netview wasn4t able to translate IP to MAC and consequently
> > > wasn4t
> > > able to find the machine.
> > > When someone ping through another machine at the same segment, it4s
> > > generated a ARP broadcast to discovery the MAC, in that moment the
> switch
> > > and Netview make a new entry in your ARP-table. After that they are
> able
> > > to
> > > send any IP-packet to this machine.
> > >
> > > -----Mensagem original-----
> > > De: Frantsen Christian [mailto:cf@INTERNOC.SE]
> > > Enviada em: Quarta-feira, 25 de Agosto de 1999 06:26
> > > Assunto: 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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