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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I ran into a situation that Bird RIP does not send some packages.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Bird configuration file /etc/bird.conf<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>log syslog all;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>debug protocols all;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>protocol device {<o:p></o:p></p><p class=MsoNormal>ššš scan time 5;<o:p></o:p></p><p class=MsoNormal>}<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>protocol direct {<o:p></o:p></p><p class=MsoNormal>ššš interface "*";<o:p></o:p></p><p class=MsoNormal>}<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>protocol kernel {<o:p></o:p></p><p class=MsoNormal>ššš persist;<o:p></o:p></p><p class=MsoNormal>ššš scan time 5;<o:p></o:p></p><p class=MsoNormal>ššš export filter {<o:p></o:p></p><p class=MsoNormal>ššššššš if source = RTS_RIP then {<o:p></o:p></p><p class=MsoNormal>ššššššššššš if rip_metric > 15 then reject;<o:p></o:p></p><p class=MsoNormal>ššššššššššš if net ~ 10.0.0.0/8 then accept;<o:p></o:p></p><p class=MsoNormal>ššššššššššš if net ~ 192.168.0.0/16 then accept;<o:p></o:p></p><p class=MsoNormal>ššššššš }<o:p></o:p></p><p class=MsoNormal>ššššššš reject;<o:p></o:p></p><p class=MsoNormal>ššš };<o:p></o:p></p><p class=MsoNormal>}<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>protocol rip {<o:p></o:p></p><p class=MsoNormal>ššš period 5;<o:p></o:p></p><p class=MsoNormal>ššš timeout time 20;<o:p></o:p></p><p class=MsoNormal>ššš garbage time 30;<o:p></o:p></p><p class=MsoNormal>ššš interface "gre*" { mode multicast; };<o:p></o:p></p><p class=MsoNormal>ššš export filter {<o:p></o:p></p><p class=MsoNormal>ššššššš if net ~ 10.64.0.0/20 then accept;<o:p></o:p></p><p class=MsoNormal>ššššššš reject;<o:p></o:p></p><p class=MsoNormal>ššš };<o:p></o:p></p><p class=MsoNormal>}<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Log messages from Bird daemon<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Feb 19 18:25:00 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:03 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:06 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:12 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:13 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:15 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:20 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:26 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:28 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:33 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:36 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:38 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:44 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:48 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:50 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:56 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:25:58 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:00 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:03 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:05 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:06 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:07 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:13 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:16 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:19 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:21 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:25 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:31 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:33 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:39 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:42 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:45 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:46 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:49 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:51 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:52 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal>Feb 19 18:26:57 srvc1 bird: rip1: Broadcasting routing table to gre1<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>And tcpdump for the same period<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>18:25:00.479028 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal>18:25:03.482132 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 184<o:p></o:p></p><p class=MsoNormal>18:25:15.639027 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal>18:25:26.478329 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 184<o:p></o:p></p><p class=MsoNormal>18:25:48.476297 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 184<o:p></o:p></p><p class=MsoNormal>18:26:05.639030 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 184<o:p></o:p></p><p class=MsoNormal>18:26:13.473560 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal>18:26:16.639029 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal>18:26:21.473055 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 184<o:p></o:p></p><p class=MsoNormal>18:26:31.473049 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal>18:26:33.472083 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 44<o:p></o:p></p><p class=MsoNormal>18:26:39.638030 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal>18:26:45.471432 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 184<o:p></o:p></p><p class=MsoNormal>18:26:57.637236 IP 10.64.16.18.520 > 224.0.0.9.520: RIPv2, Response, length: 24<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Are there any ideas why this is happening?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards,<o:p></o:p></p><p class=MsoNormal>Aleksey<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>