On Fri Nov 04, 2016 at 03:40:05PM +0000, Simon Lockhart wrote: > Anyone got any suggestions on what I should look for whilst troubleshooting > this?
Well, having got myself to a point where I could reliably reproduce the problem, I think I've narrowed down the issue... On the 100G on the Nexus 92160, I'm seeing output errors... nexus-01# show int e1/49 counters errors -------------------------------------------------------------------------------- Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards -------------------------------------------------------------------------------- Eth1/49 0 0 10003 0 0 0 -------------------------------------------------------------------------------- Port Single-Col Multi-Col Late-Col Exces-Col Carri-Sen Runts -------------------------------------------------------------------------------- Eth1/49 0 0 0 0 0 0 -------------------------------------------------------------------------------- Port Giants SQETest-Err Deferred-Tx IntMacTx-Er IntMacRx-Er Symbol-Err -------------------------------------------------------------------------------- Eth1/49 0 -- 0 10003 0 0 Does anyone know what "IntMacTx-Er" is? Google hasn't thrown up anything useful. At the other end of the 100G link, the receiving port showing Rcv-Err and FCS-Err, although it still tries to forward the packets on. The 10G port on a Cisco 6500 (which is the next hop) shows the packets as CRC errors, and finally drops them. Simon _______________________________________________ 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/