Date: Fri, 26 Jul 2013 18:24:49 +0600 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: freebsd-pf@freebsd.org Subject: carp-ng and vhid>9 Message-ID: <51F26A91.202@norma.perm.ru>
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Hi. I use FreeBSD 10.0-CURRENT. Call me a dumbhead, but I have a strong impression that using vhid>9 causes problems: Host A (r251857): # ifconfig vlan3 vlan3: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=3<RXCSUM,TXCSUM> ether 00:1a:64:21:94:89 inet 128.127.145.2 netmask 0xfffffff8 broadcast 128.127.145.7 inet6 fe80::21a:64ff:fe21:9489%vlan3 prefixlen 64 scopeid 0x8 inet6 2a00:7540::2 prefixlen 120 inet 128.127.145.1 netmask 0xfffffff8 broadcast 128.127.145.7 vhid 10 inet6 2a00:7540::1 prefixlen 120 vhid 10 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <full-duplex>) status: active vlan: 3 parent interface: bge0 carp: MASTER vhid 10 advbase 1 advskew 100 Host B (r253079): # ifconfig vlan3 vlan3: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=3<RXCSUM,TXCSUM> ether 00:1a:64:21:95:28 inet 128.127.145.3 netmask 0xfffffff8 broadcast 128.127.145.7 inet6 fe80::21a:64ff:fe21:9528%vlan3 prefixlen 64 scopeid 0x8 inet6 2a00:7540::3 prefixlen 120 inet 128.127.145.1 netmask 0xfffffff8 broadcast 128.127.145.7 vhid 10 inet6 2a00:7540::1 prefixlen 120 vhid 10 nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> media: Ethernet autoselect (100baseTX <full-duplex>) status: active vlan: 3 parent interface: bge0 carp: BACKUP vhid 10 advbase 1 advskew 200 but in dmesg on host B I see (net.inet.carp.log: 2): [...] carp: VHID 10@vlan3: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 11@vlan600: BACKUP -> MASTER (master down) carp: VHID 11@vlan600: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 10@vlan3: BACKUP -> MASTER (master down) carp: VHID 10@vlan3: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 11@vlan600: BACKUP -> MASTER (master down) carp: VHID 11@vlan600: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 10@vlan3: BACKUP -> MASTER (master down) carp: VHID 10@vlan3: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 11@vlan600: BACKUP -> MASTER (master down) carp: VHID 11@vlan600: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 10@vlan3: BACKUP -> MASTER (master down) carp: VHID 10@vlan3: MASTER -> BACKUP (more frequent advertisement received) carp: VHID 11@vlan600: BACKUP -> MASTER (master down) [...] I checked and rechecked the passwords on both machines - identical. As you can see - address pairs are identical too. The fact that host B receives some vrrp announces tells that the packet filter/passwords are configured properly (in fact, I turned it off on B, but this didn't resolve the situation). netstat: Host A: # netstat -s -p carp carp: 524 packets received (IPv4) 0 packets received (IPv6) 0 packets discarded for wrong TTL 0 packets shorter than header 0 discarded for bad checksums 0 discarded packets with a bad version 0 discarded because packet too short 0 discarded for bad authentication 0 discarded for bad vhid 0 discarded because of a bad address list 14064 packets sent (IPv4) 3516 packets sent (IPv6) 0 send failed due to mbuf memory error Host B: # netstat -s -p carp carp: 12881 packets received (IPv4) 1171 packets received (IPv6) 0 packets discarded for wrong TTL 0 packets shorter than header 0 discarded for bad checksums 0 discarded packets with a bad version 0 discarded because packet too short 0 discarded for bad authentication 0 discarded for bad vhid 0 discarded because of a bad address list 648 packets sent (IPv4) 570 packets sent (IPv6) 0 send failed due to mbuf memory error I would be really glad if someone could help me with this. I have seen this situation when host B was running FreeBSD 8.2-STABLE, but first I thought that there's some incompatibility between old carp and carp-ng. I also have 9 other vhids that work just fine. The only explanation I have so far - using vhid>9 causes some errors on the backup side. Thanks. Eugene.
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