[c-nsp] counter bug? RxPause = multicasts

Mateusz Błaszczyk blahu77 at gmail.com
Fri May 30 03:32:13 EDT 2008


2008/5/29 Burton Windle <bwindle at fint.org>:
>
> I've got a 6500 with a Sup720 running 12.2(33)SXH1 with, among others, a WS-X6748-GE-TX blade. A port on the 6748 is seeing unusual port counters, where every RxPause frame is counted as a multicast packet (or vice versa, not sure which). Is this a bug in this code that someone else has seen, or some feature that I'm not familar with?
>

Ethernet PAUSE frames are sent to multicast address 01-80-C2-00-00-01.
Looks like there is a station on VLAN 2 that is sending that frames.
Sniff the traffic to check what is the source MAC.

>  flowcontrol receive desired

and you actually enabled PAUSE frames processing

-- 
-mat


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