By any chance were you querying a Sup32 that had BGP full routes? That and other large tables can easily swamp the cpu on the Sup32. This technote is based on IOS, and I don't know if the same facilities exist in CatOS, but as Nick mentioned, run, don't walk and convert to IOS. CatOS is dead. http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080... -----Original Message----- From: david peahi [mailto:davidpeahi@gmail.com] Sent: Friday, November 02, 2012 2:37 PM To: nanog@nanog.org Subject: Cisco 6509 SUP32 SNMP Meltdown With CatOS Anyone have experience with Cisco 6509E/SUP32 crashing under heavy SNMP polling load, causing high cpu utilization and 6509 lockup, requiring 6509 reboot? CatOS is deployed. Is the behavior any different with 6509 IOS? David