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
