Hey, I don't think you can actually recover from that. What you might be able to do, depending on your design, is use selective route download (http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_bgp/configuration/15-s/irg-selective-download.html ) to prevent routes from overflowing your FIB in the first place. Obviously you'll need to be careful to avoid blackholing traffic.
Spyros Kakaroukas IP Engineer ? Consider our environment – Think before you print ? -----Original Message----- From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of "Rolf Han?en" Sent: Monday, February 03, 2014 4:09 PM To: cisco-nsp@puck.nether.net Subject: [c-nsp] Sup720 - FIB full, software switching Hi, today I saw 2x Sup720-3B (default 192K IPv4 routes) that received a full table. After FIB was filled IOS gave a warning that it now may forward in software (and resetted all BGP sessions because of memory issues). I don't have the exact messages. The real problem occured after that. I shut the full table BGP session and cleared the others, the system now had a few routes only again. But it started to drop packets, I saw no pattern, it looked nearly random. I needed to reboot both boxes to resolve that issue. IOS was s72033-advipservicesk9_wan-mz.122-33.SXJ.bin Is there a way to avoid those issues by let it just ignoring routes not matching into the FIB? Is there a command to reset the routing mode/routes back to CEF without reloading the box? kind regards Rolf _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ This e-mail and any attachment(s) contained within are confidential and are intended only for the use of the individual to whom they are addressed. The information contained in this communication may be privileged, or exempt from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender and delete the communication without retaining any copies. Rolaware Hellas SA is not responsible for, nor endorses, any opinion, recommendation, conclusion, solicitation, offer or agreement or any information contained in this communication. _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
