We have 10 5406zl running the latest firmware (11.69) and we have millions of drop on every ports. I have found out that every time you plug a device (ip phone, computer,etc) in a port, a random number of drops appears. No errors, just drop. The drop are stable after the initial connection. Anyone has an idea? We had the same problem with the previous firmware 11.63. Rebooting the switch only fix the problem for a couple of hours before they reappears again. We have disabled STP, LACP, POE and test on a stand alone switch with the same results. It doesn't seems to affect the network performance but I don't like it. Anyone has the same problem or have an idea?
Here are the port info. Link Status : Up Bytes Rx : 8,602,943 Bytes Tx : 618,448,260 Unicast Rx : 42,458 Unicast Tx : 555,705 Bcast/Mcast Rx : 6566 Bcast/Mcast Tx : 5,344,497 FCS Rx : 0 Drops Tx : 8,890,384 Alignment Rx : 0 Collisions Tx : 0 Runts Rx : 0 Late Colln Tx : 0 Giants Rx : 0 Excessive Colln : 0 Total Rx Errors : 0 Deferred Tx : 0
We have a 5406zl as the router for about 2,500 computers on about 75 2650 switches.
The interfaces on the 5406zl showed some significant Tx Drops when I rebooted switches connected to that port. I assumed this was because the port was blocked by STP briefly, but I didn't investigate further. But you've tried with STP disabled, so perhaps something stranger is at work.
Bruce Campbell Director, Network Services Information Systems and Technology MC 1018 (519)888-4567 x38323 University of Waterloo, Waterloo, ON
