We have a weird problem on some 7606s with WS-6748-SFP blades. We have a whole bunch of multicast streams running through these routers and there are multicast receivers directly attached. We had a problem where one particular multicast stream would occasionally have dropped packets resulting in MPEG CC errors on the receiver. We were able to prove that the source was clean, as were the paths between the source and the receiver. The receiver was not seeing MPEG CC errors on any other stream, which is really odd.
Here's where it gets even stranger. When we moved the receiver to another port, like from 23 to 24, the receiver still saw the errors. We moved it to port 25 and the errors apparently went away. Our only guess is that this could potentially be an issue with the ASICs on the blade. Ports 13-24 are controlled by one ASIC (I believe a Rohini ASIC), and the four Rohini ASICs connect to two Janus ASICs. That is as I understand it. I may be wrong. When we moved the receiver from port 24 to 25, we moved to a different Rohini ASIC and possibly to another Janus ASIC. Regardless, according to our video guys the problem cleared up after the move. Have any of you ever experienced anything like this? Could this really be a problem on the Rohini or Janus ASICs? What sort of problem would only affect certain multicast groups and not others? Thanks _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
