On Mon, 23 Jan 2012 11:29:07 +0000, Shaun wrote: > Have tried to get NIC Bonding working as per wiki.debian.org/Bonding. > > Each NIC is connected to a different switch for redundancy rather than > bandwidth purposes (insulate against a switch failure). I'm using the > active-backup mode for HA failover. > > output from cat /etc/network/interfaces
(...) I have the same setup as yours in my lenny servers but with a difference: both cards are connected to the same physical switch in the same VLAN. > If I then pull a cable (or use ifconfig eth0 down) I get the following > in the syslog: > > Jan 23 11:21:50 host-1 kernel: [55852.565975] bonding: bond0: link status > down for active interface eth0, disabling it in 200 ms. > Jan 23 11:21:51 host-1 kernel: [55852.761549] bonding: bond0: link status > definitely down for interface eth0, disabling it > Jan 23 11:21:51 host-1 kernel: [55852.761555] bonding: bond0: making > interface eth1 the new active one. > > All looks good... but... ping from host-1 produces Destination host > unreachable (with the icmp errors coming from the IP of the bond0 device > itself). And my remote ssh session dies. Good job I have KVM access :) > > So it's not working. This setup seems so simple I can't see where > anything could be wrong, so I'm starting to suspect a problem with the > switch. Maybe the switch(es) are being too clever? But then again maybe > I've done something wrong. > > What can I do to find out what's going on? I'm using Squeeze (current > point release) and Kernel 2.6.32-5-amd64. Mmm... have you tried the other way round? Disconnect eth1 and see if it works. Another thing I would test is with no bonding setup at all, configure both ethernet cards separately and try to ping with both of them, i.e.: ping -c 3 -I eth0 google.com ping -c 3 -I eth1 google.com Just to discard a hardware or routing issue. Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/jg6jkm$n8f$1...@dough.gmane.org
