I experienced the same problem about 2 years ago before we replaced our 2500 series routers.  We had approx. 700 2500 series routers of various flavors deployed though out our WAN.  Many of these devices were running out of memory during demand polls etc.  In order combat our polling issues, the only thing we could do was increase the retry and lower the timeout values.

Thank you
Sandro Seminara
Fidelity National Financial

-----Original Message-----
From: Alan E. Hennis [mailto:Hennis_Alan_E AT cat DOT com]
Sent: Sunday, January 11, 2004 8:03 PM
To: nv-l AT lists.us.ibm DOT com
Subject: [nv-l] Cisco 2500 routers and NetView

NV 7.1.3 FP 1 RH Linux 7.2

I have a lot of old Cisco 25xx routers in my network. There are plans to
replace these older devices this year but not until much later in the year.
I poll all of my routers via SNMP.  I see a lot of missed SNMP queries of
these routers. This causes NetView to report the router down when it is in
fact still reachable.  I was wondering if anyone on the list has
experienced this of has any suggestions on how to better monitor older
Cisco routers.

Thanks
Alan E. Hennis
Caterpillar Inc
Systems+Process Division
309.494.3308
hennis_alan_e AT cat DOT com