Hi, I've added more info in bug report: https://bugs.launchpad.net/opencontrail/+bug/1510058
-- Regards Dominik 2015-10-26 10:54 GMT+01:00 Anand H Krishnan <[email protected]>: > Hello Dominik, > > If VM_DST is the source of ARP (as per your tcpdump), you should see those > requests in tcpdump of eth0 interface in VM_DST, which we are not. Then are > you saying that VM_DST didn't send those requests? Or is there something > wrong with your terminology? > > Also, at what stage in the lifetime of the VM did you observe this problem > i.e.: > just after the VM has booted up or after everything has stabilized (say, the > VM > has already got IP addresses) etc.: > > Thanks, > Anand > > ________________________________________ > From: Users <[email protected]> on behalf of Dominik > Mostowiec <[email protected]> > Sent: Friday, October 23, 2015 7:30 PM > To: [email protected] > Subject: [Users] ARP response on wrong VM > > Hi, > We have strange observations about ARP. > 2 VMs on separated compute nodes. > VM_SRC: 10.189.85.11(02:86:45:5e:06:38), VM_DST: > 10.189.85.10(02:25:6b:67:72:e9) > > tcpdump on VM_SRC: > tcpdump -i eth0 -e arp > 13:41:41.694854 02:25:6b:67:72:e9 (oui Unknown) > 02:86:45:5e:06:38 > (oui Unknown), ethertype ARP (0x0806), length 42: Request who-has > 10.189.85.11 tell 10.189.85.10, length 28 > 13:41:42.696888 02:25:6b:67:72:e9 (oui Unknown) > 02:86:45:5e:06:38 > (oui Unknown), ethertype ARP (0x0806), length 42: Request who-has > 10.189.85.11 tell 10.189.85.10, length 28 > 13:41:43.698889 02:25:6b:67:72:e9 (oui Unknown) > 02:86:45:5e:06:38 > (oui Unknown), ethertype ARP (0x0806), length 42: Request who-has > 10.189.85.11 tell 10.189.85.10, length 28 > 13:41:45.690163 02:25:6b:67:72:e9 (oui Unknown) > Broadcast, ethertype > ARP (0x0806), length 42: Request who-has 10.189.85.11 tell > 10.189.85.10, length 28 > 13:41:45.690203 02:86:45:5e:06:38 (oui Unknown) > 02:25:6b:67:72:e9 > (oui Unknown), ethertype ARP (0x0806), length 42: Reply 10.189.85.11 > is-at 02:86:45:5e:06:38 (oui Unknown), length 28 > > 3 x request to mack 02:86:45:5e:06:38 who-has 10.189.85.11 and no response. > And after that 1 request to all "who-has 10.189.85.11" and proper response. > > On VM_DST: > tcpdump -i eth0 -e arp > 13:41:41.886815 02:86:45:5e:06:38 (oui Unknown) > 02:25:6b:67:72:e9 > (oui Unknown), ethertype ARP (0x0806), length 42: Reply 10.189.85.11 > is-at 02:86:45:5e:06:38 (oui Unknown), length 28 > 13:41:42.888807 02:86:45:5e:06:38 (oui Unknown) > 02:25:6b:67:72:e9 > (oui Unknown), ethertype ARP (0x0806), length 42: Reply 10.189.85.11 > is-at 02:86:45:5e:06:38 (oui Unknown), length 28 > 13:41:43.890797 02:86:45:5e:06:38 (oui Unknown) > 02:25:6b:67:72:e9 > (oui Unknown), ethertype ARP (0x0806), length 42: Reply 10.189.85.11 > is-at 02:86:45:5e:06:38 (oui Unknown), length 28 > > 3x response on previous 3 requests. > There is no request, only responses. > If vrouter send the response of request 'who-has 10.189.85.11' - the > response is on wrong VM. > If VM_DST OS should send this - on OS we don't see any request. > > I think the response is send to wrong VM. > > Could You look on this and help us to solve or explain it? > > -- > Regards > Dominik > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opencontrail.org/mailman/listinfo/users_lists.opencontrail.org -- Pozdrawiam Dominik _______________________________________________ Users mailing list [email protected] http://lists.opencontrail.org/mailman/listinfo/users_lists.opencontrail.org
