On Thu, Jul 29, 2010 at 7:28 AM, Asbjorn Hojmark - Lists <li...@hojmark.org> wrote: > On Thu, 29 Jul 2010 08:29:18 -0400, you wrote: > >> I have seen some pretty low level problems with multicast packets >> being dropped on the floor by the hardware forwarded on 67xx >> linecards. The bug seems to appear when changes that effect the asic >> (turning on "mls qos" for example). Resetting the sup engine doesn't >> resolve it. Everything looks good at the CEF/mfib level, and all >> counters show the packet count increasing, but the packets never get >> forwarded out of the linecard. > > Sounds a bit like CSCtc24959, which I saw with a couple of customers. > It was typically seen on changes to topology (i.e. rerouting). > > Flipping the replication mode: > mls ip multicast replication-mode ingress > no mls ip multicast replication-mode ingress [1] > causes reprogramming of the hardware, which fixed the problem without > having to reset the whole blade. Note that it *is* traffic-affecting > for all active multicast flows. > > CSCtc24959 is fixed in SRD4 and will not be integrated in earlier > releases, or so I was told. > > HTH, > -A > [1] Or the other way round if you use ingress replication >
That sounds a lot like what we're seeing, but we're not on the SR train. We're running 12.2(18)SXF9 at the moment. _______________________________________________ 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/
