On 02/11/2012 18:37, david peahi wrote:
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?
You're being very coy about details here. I've not managed to actually crash a 6500 running IOS by excessive snmp, but the more interesting question is: how on earth are you running so many snmp queries that this is happening? E.g. a fully loaded 6509 with 384 ports would take ~3000 queries every several minutes to perform full port diagnostic polling, and you'd want to be doing this every couple of seconds to cause serious CPU impact. Are you doing something like full DFZ or MAC table polling? Or IP accounting over snmp? If you are, there are probably better ways of achieving what you're trying to do. Also, you may want to consider moving away from CatOS, as it's now basically abandonware (or at least will formally be in Jan 2013), and hasn't even seen maintenance updates in the last 4 years. Nick