The Default is set to 800. we had to set this varible to 100 and we noticed
a big difference.
Mark Lewis
Sr. Network Admin.
DSTSYSTEMS INC.
mhlewis@dstsystems.com
Jeff Fitzwater <jfitz@PRINCETON.EDU> on 01/07/2000 02:08:23 PM
Please respond to Discussion of IBM NetView and POLYCENTER Manager on
NetView <NV-L@UCSBVM.UCSB.EDU>
To: NV-L@UCSBVM.UCSB.EDU
cc: (bcc: Mark H. Lewis/Winchester/DST/US)
Subject: Re: polling for default routing entries
See if the SNMP config has the same entry for number of routes to
retrieve.
Look at the bottom of the SNMP config GUI and you will see an entry
point for how many routes to retrieve.
I don't know what the default is but if you don't need all the route
info limit it to around 200.
Jeff Fitzwater
CIT Systems & Networking
Princeton University
Sean Davidson wrote:
>
> I had a similar problem with NetView 5.1.1 pulling a 340000 entry ARP
table
> off one of my routers. CPU would spike at 100% with IP SNMP on the router
> getting nearly all the CPU during that time frame. It would take NetView
> over 45 min, using SNMP v1 to pull the ARP table entries off of that
router.
> Ended up doing an SNMP View command on the router to tell the router
> not to allow anyone to pull his ARP table via SNMP.
>
> First thing I would check on the NetView systems is the entry for that
> device in xnmsmpconf and see if they match.
>
> Don't know why two different NetView systems would get different results
> when polling the router. You can try using iptrace to get a trace of both
> systems demand polling the router and comparing the MIB variables that
are
> being polled.
>
> __________________________
> Thanks,
> Sean Davidson
>
> Sr. Network Systems Engineer
> Publix Super Markets, Inc.
> P.O. Box 32015
> Lakeland, Fl. 33802-2015
> Email - sean.davidson@publix.com
> Voice - (863) 686-8754 x6889
> Fax - (863)616-5895
>
> -----Original Message-----
> From: Owens, Blaine C [mailto:bowens@EASTMAN.COM]
> Sent: Friday, January 07, 2000 1:49 PM
> To: NV-L@UCSBVM.ucsb.edu
> Subject: Re: polling for default routing entries
>
> Gib, I'm afraid I was in a hurry and didn't read your original post close
> enough. I was thinking of the difference between a production ROUTER with
> large tables and a test ROUTER with small tables. I see now that you are
> looking at the same router (same tables) with two different NetViews.
>
> Anybody with a clear head have any suggestions?
>
> Blaine Owens
> Eastman Chemical Company
> Phone - (423)-229-3579
> Fax - (423)-229-1188
> bowens@eastman.com
>
> > -----Original Message-----
> > From: Fendrick, Gib (CC-MIS) [SMTP:Gib.Fendrick@CONAGRA.COM]
> > Sent: Friday, January 07, 2000 1:30 PM
> > To: NV-L@UCSBVM.ucsb.edu
> > Subject: Re: polling for default routing entries
> >
> > Blaine,
> > Any idea tho why the demand poll and load it puts on the router could
> > be so different between the two NetView systems?
> >
> > Thanks,
> > Gib Fendrick
> > ConAgra, Inc.
> >
> > -----Original Message-----
> > From: Owens, Blaine C [mailto:bowens@EASTMAN.COM]
> > Sent: Friday, January 07, 2000 12:25 PM
> > To: NV-L@UCSBVM.UCSB.EDU
> > Subject: Re: polling for default routing entries
> >
> >
> > You are innocent - I have found this behavior to be normal for our
Cisco
> > routers ( the larger the tables the greater the impact).
> >
> > Blaine Owens
> > Eastman Chemical Company
> > Phone - (423)-229-3579
> > Fax - (423)-229-1188
> > bowens@eastman.com
> >
> > > -----Original Message-----
> > > From: Fendrick, Gib (CC-MIS) [SMTP:Gib.Fendrick@CONAGRA.COM]
> > > Sent: Friday, January 07, 2000 1:13 PM
> > > To: NV-L@UCSBVM.ucsb.edu
> > > Subject: polling for default routing entries
> > >
> > > Hi all.
> > >
> > > I have two Netview/AIX 5.1.1 systems running (production and
> > development).
> > > When we do a Demand Poll on the prod system, it will take about 4
> > minutes.
> > > And the CPU on the router will shoot up to approx 60% during this
time.
> > > The Demand poll display spends most of this time on 'get default
routing
> > > entry'.
> > >
> > > When we do a Demand Poll on the development system, it takes about 15
> > > seconds.
> > > NO spike in CPU on the router. No waiting for 'get default routing
> > > entry'.
> > > (Actually spends most
> > > of this time waiting to time out on an interface that's down).
> > >
> > > It seems to have something to do with the routing table, which on the
> > > router
> > > in question is about
> > > 1500 route entries. Is there something we might have done that is
> > > influencing how NetView retrieves
> > > this table? I've check the SNMP Configuration with the GUI on both
> > > systems, they are the same.
> > >
> > > Anyone have any suggestions?
> > >
> > > Thanks,
> > > Gib Fendrick
> > > ConAgra, Inc.
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