Justin Shore wrote:
I just killed the PVC of a DSL customer that was sending exactly 115 DHCP DISCOVER messages per second. That caused a 600% increase on the CPU of the NPE-G1 that the PVC terminates on and the DHCP is currently being run on. Are there any DHCP rate-limiting features built into the IOS that could be used to throttle either how often the router will respond to certain received queries, to queries from a single host, or the rate at which queries can be punted to the CPU for processing?
Check the Control Plane Policing deployment guide: http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6642/prod_white_paper0900aecd804fa16a.html -- "Don't expect me to cry for all the | Łukasz Bromirski reasons you had to die" -- Kurt Cobain | http://lukasz.bromirski.net _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
