Hello freebsd,
We have two FreeBSD boxes, each one has 4 CARP interfaces in preempt mode, without arp balancing. Backup without any reason preempts Master and after a while (an hour or two) it becomes Backup again. When Backup becomes Master on Master box net.inet.carp.suppress_preempt: 1, but all interfaces are up and seemed to work properly. Is there any ways to debug this issue? Additional info: #uname -v FreeBSD 6.1-RELEASE-p7 Master: # grep carp /var/log/messages Nov 14 01:50:59 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 01:52:30 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 02:43:55 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 02:59:12 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 03:26:13 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 03:26:32 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 04:58:39 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 05:53:27 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 06:01:12 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 06:03:36 atlas kernel: carp2: BACKUP -> MASTER (preempting a slower master) Nov 14 06:03:36 atlas kernel: carp0: BACKUP -> MASTER (preempting a slower master) Nov 14 06:03:36 atlas kernel: carp1: BACKUP -> MASTER (preempting a slower master) Nov 14 06:03:38 atlas kernel: carp3: BACKUP -> MASTER (preempting a slower master) Master & Backup (in normal state) #sysctl -a | grep "net.inet.carp." net.inet.carp.allow: 1 net.inet.carp.preempt: 1 net.inet.carp.log: 2 net.inet.carp.arpbalance: 0 net.inet.carp.suppress_preempt: 0 all NICs - 3Com 3c905C-TX Master: #ifconfig | grep -A2 carp carp0: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.1.3 netmask 0xffffff00 carp: MASTER vhid 1 advbase 1 advskew 10 carp1: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.2.3 netmask 0xffffff00 carp: MASTER vhid 2 advbase 1 advskew 10 carp2: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.3.3 netmask 0xffffff00 carp: MASTER vhid 3 advbase 1 advskew 10 carp3: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.4.3 netmask 0xfffffff8 carp: MASTER vhid 4 advbase 1 advskew 10 Backup #ifconfig |grep -A2 carp carp0: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.1.3 netmask 0xffffff00 carp: BACKUP vhid 1 advbase 1 advskew 20 carp1: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 1.1.2.3 netmask 0xffffff00 carp: BACKUP vhid 2 advbase 1 advskew 20 carp2: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.3.3 netmask 0xffffff00 carp: BACKUP vhid 3 advbase 1 advskew 20 carp3: flags=49<UP,LOOPBACK,RUNNING> mtu 1500 inet 10.1.4.3 netmask 0xfffffff8 carp: BACKUP vhid 4 advbase 1 advskew 20 Master: #netstat -ni |grep carp Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll carp0 1500 <Link#12> 311894 1 5926852 0 0 carp0 1500 10.1.1 10.1.1.3 42293866 - 263238 - - carp1 1500 <Link#13> 48653 1 5663615 0 0 carp1 1500 10.1.2 10.1.2.3 153785957 - 0 - - carp2 1500 <Link#14> 48661 1 5663615 107 0 carp2 1500 10.1.3/24 10.1.3.3 476782 - 0 - - carp3 1500 <Link#15> 48974 1 5663634 1155 0 carp3 1500 10.1.4.3/ 10.1.4.3 6885622 - 0 - - Backup: #netstat -ni |grep carp Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll carp0 1500 <Link#12> 35221 0 6437 0 0 carp0 1500 10.1.1 10.1.1.3 8699 - 0 - - carp1 1500 <Link#13> 35220 0 6438 0 0 carp1 1500 10.1.2 10.1.2.3 86000 - 0 - - carp2 1500 <Link#14> 35221 0 6437 0 0 carp2 1500 10.1.3/24 10.1.3.3 0 - 0 - - carp3 1500 <Link#15> 35190 0 6443 23 0 carp3 1500 10.1.4.3/ 10.1.4.3 958 - 0 - - Thanks in advance! -- Best regards, Eugene mailto:[EMAIL PROTECTED] _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"