On Mon, Jun 22, 2015 at 06:05:14PM +0100, Paul Jakma wrote: > On Mon, 22 Jun 2015, Ondrej Zajicek wrote: > >Well, i did not experience the issue, i am just BIRD developer trying to > >resolve the bug in BIRD/Quagga loading reported on BIRD mailing list. > > I made the attached GAWK script to try understand what's happening better. > Can be run a la: > > $ tcpdump -tt -r /tmp/ospf.pcap -nv \ > '(host 192.168.255.66 or host 192.168.255.72 or host 192.168.255.93)' \ > | gawk -f /tmp/ospf-dump.awk | less > > > At the very end it should write out the history of LS-Requests by 72, and > LS-Updates by 66 and 93, for each LSA with <advertising router> # <LS ID>, > and showing the src -> dst. relative time and LSA seq num. > > I don't see any obviously bogus behaviour in that history list at the end, > but it's long and I havn't finished scanning. Will keep looking - maybe you > could have a look too.
Well, IMHO the bogus behavior is right at the begginging of the LSA req/update history - e. g. 2nd, 3rd and 5th LSAs (requests are ignored and retransmitted after RxmtInterval - 5s): 10.255.192.3 # 192.168.255.224 : req: 192.168.255.72 --> 192.168.255.93 109.450719 req: 192.168.255.72 --> 192.168.255.66 109.450750 req: 192.168.255.72 --> 192.168.255.66 114.451763 req: 192.168.255.72 --> 192.168.255.93 114.451786 req: 192.168.255.72 --> 192.168.255.93 119.451301 req: 192.168.255.72 --> 192.168.255.66 119.451325 upd: 192.168.255.93 --> 224.0.0.5 119.452162 seq 0x80002683 ack: 192.168.255.72 --> 224.0.0.6 120.713873 seq 0x80002683 10.255.192.1 # 91.202.135.56 : req: 192.168.255.72 --> 192.168.255.93 59.447131 req: 192.168.255.72 --> 192.168.255.66 59.447165 req: 192.168.255.72 --> 192.168.255.66 64.448653 req: 192.168.255.72 --> 192.168.255.93 64.448685 upd: 192.168.255.66 --> 224.0.0.5 64.450376 seq 0x80000004 ack: 192.168.255.72 --> 224.0.0.6 67.113794 seq 0x80000004 10.255.192.1 # 91.202.135.59 : req: 192.168.255.72 --> 192.168.255.93 59.447131 req: 192.168.255.72 --> 192.168.255.66 59.447165 req: 192.168.255.72 --> 192.168.255.66 64.448653 req: 192.168.255.72 --> 192.168.255.93 64.448685 upd: 192.168.255.66 --> 224.0.0.5 64.450376 seq 0x80000005 ack: 192.168.255.72 --> 224.0.0.6 67.113794 seq 0x80000005 -- Elen sila lumenn' omentielvo Ondrej 'Santiago' Zajicek (email: [email protected]) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."
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