FYI. We recently encountered an inline packet crash bug that took out two Cat 6509 routers, each equipped with two Sup2T supervisors. All sups crashed within seconds of one another.
In other words, both routers in a dual resilient router design, with dual sups in each of the routers, crashed and reloaded when all sups crashed within the same minute. This caused an outage while both routers reloaded. The routers operate independently with no VSS config. We did not change the MTU on any interface or any other part of the config, and the crash occurred at midnight with no one logged into the devices. Cisco TAC cited this bugID: CSCuf60783, which has a Severity 2, states that VSS is involved, implies that an MTU config is involved, and describes the chance of hitting the bug as low. Needless to say, we don't agree with any of those assertions. We were told that inline packets transiting the data plane caused the crash. Luckily there was not a repeat of the packet traffic that triggered the bug, so after the crash both boxes came back up and continued to function. TAC advised a reload on 15.1(2)SY1, which we have done. -Charles Charles E. Spurgeon University of Texas at Austin / ITS Networking [email protected] / 512.475.9265 _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
