On Feb 11, 2013, at 6:39 AM, Peter Fales wrote: > On Fri, Feb 08, 2013 at 01:19:49PM -0800, Murphy McCauley wrote: >> The normal LLDP broadcast address is in the bridge filtered range, so >> anything that thinks it's a bridge (Linux bridge module?) could be eating >> them. > > I'm a bit puzzled by that. I don't have the bridge module (or brcompat) > in my module stack. So, I'm curious where those LLDP multicasts are > being dropped. > > Two other datapoints > > 1) I connected my switch to Windows7 machine running wireshark and it > does not see the discovery packets using *either* address. > > 2) When I monitor /proc/net/dev on the openwrt switch, the transmitted packet > count increases by 1 about every 5 seconds. So, I think the packets > are really being sent. However, on the linux machine running wireshark > the received packet count on the interface is not incremented. The only > thing between the switch and the PC is a wire, so either the packets > are not actually going out on the wire (even though the switch thinks > so), or they are getting dropped at a very low level in the linux > networking stack. > > Has anyone else observed a problem with LLDP packets being "invisible" > to wireshark?
Are your interfaces in promiscuous mode? -- Murphy _______________________________________________ openflow-discuss mailing list openflow-discuss@lists.stanford.edu https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
