Hi Adam, I'm guessing you've already thought of this, but is it at all possible that one of the destinations you're tee-ing the packets to (e.f.g.h) is then feeding it back (to a.b.c.d)?
Thanks, Nathan. -----Original Message----- From: pmacct-discussion [mailto:pmacct-discussion-boun...@pmacct.net] On Behalf Of Adam Jacob Muller Sent: Thursday, 21 November 2013 4:05 p.m. To: pmacct-discussion@pmacct.net Subject: [pmacct-discussion] nfacctd, ipfix and tee transparent mode Hi, I have an interesting issue that I think perhaps results from a perhaps unique configuration. I have a very simple nfacctd setup on one box, its goal would be to receive ipfix data from two sources (Juniper MX) and replicate it out to a few places. The configuration is -very- simple: nfacctd_ip:a.b.c.d nfacctd_port: 2101 plugins: tee[all] tee_receiver[all]: e.f.g.h:2100 tee_transparent: true When I turn up the data feed to this source, everything works fine for a few minutes and then nfacctd will suddenly get into what looks like a loop internally and start rebroadcasting out the same packets [I think -- I did not specifically confirm this] (not a single packet, but perhaps the same group) as quickly as possible. Like, line rate pegging the servers gigabit uplink. Some (hopefully) useful data points: I have another nfacctd instance teeing with an almost identical configuration, except that the source is NetFlow v5 (Cisco). tee_transparent has no effect, I prefer it but it still breaks with it off. Disabling the netflow source does not stop the packets. nfacctd continues to rebroadcast the same (again, presumably the same) set of packets over and over again until I kill the process (or ctrl-c, that still works fine). This seems very unusual, because I assume this would be obvious in testing / development if things were this badly broken but my configuration is also exceedingly simple and I don't particularly see where I did (or even could) go wrong. Thanks in advance for any advice you can offer, -Adam _______________________________________________ pmacct-discussion mailing list http://www.pmacct.net/#mailinglists _______________________________________________ pmacct-discussion mailing list http://www.pmacct.net/#mailinglists
