Emmanuel Fuste wrote: > > Mike Fedyk wrote: > > > > bert hubert wrote: > > > Linux has a thing called 'dead gateway detection', which might work for you. > > > Just make two routes with a different metric, should work I think. > > > > > > Existing sessions will die however because their source IP address is > > > unroutable. > > > > I'm not sure that is working correctly. I have two DSLs to the internet with > > different IP addresses, speeds and ISPs. > > > > DSL1: 63.194.. 384Kb/sec X 1.5-6Mb/sec ADSL on eth1 via pacbell > > DSL2: 64.63.. is 768Kb/sec SDSL on eth2 via lmki > > > > Test: > > ping yahoo site through DSL1 > > unplug phone line from bridge on DSL1 > > ip route flush table cache > > ping yahoo site --- No response > > tracepath yahoo site --- Still trying to use DSL1 > > > > That isn't working. > > > > Here's my setup: > > $ ip route > > 10.1.1.1 dev eth2 scope link src 10.1.1.2 > > 10.0.0.0/24 dev eth0 scope link src 10.0.0.1 > > 127.0.0.0/8 dev lo scope link > > default > > nexthop via 63.194.239.201 dev eth1 weight 99 > > nexthop via 10.1.1.1 dev eth2 weight 1 > > > For the default route, try: > ip route add default via 63.194.239.201 dev eth1 > ip route add default via 10.1.1.1 dev eth2 metric 10 > > But you will loose the load balancing behaviour. > > Emmanuel. I am not running any kind of routing daemon, is this required for this to work? Maybe rdisc? The problem I'm having is having a dsl go down suddenly, and switching over to another for outbound traffic for our network. I run a ping and unplug the phone from the dsl bridge. This is how it would go down in a real situation. The ping stops. I "ip ro f t cache", but still nothing. I turn off the dsl bridge, and still nothing. The only thing that I've tried that works is "ip link set eth1 down". It seems that I need an active status monitoring system. Here's my setup: root@xxxxxxx:/etc/init.d$ ip ro 63.194.239.201 dev eth1 scope link src 63.194.239.202 10.1.1.1 dev eth2 scope link src 10.1.1.2 10.0.0.0/24 dev eth0 scope link 127.0.0.0/8 dev lo scope link default via 63.194.239.201 dev eth1 default via 10.1.1.1 dev eth2 metric 2 root@xxxxxxx:/etc/init.d$ ip ru 0: from all lookup local 32760: from 10.1.1.2 lookup 20 32761: from 63.194.239.202 lookup 10 32766: from all lookup main 32767: from all lookup default root@xxxxxxx:/etc/init.d$ ip ro s t 10 63.194.239.201 dev eth1 scope link src 63.194.239.202 10.0.0.0/24 dev eth0 scope link default via 63.194.239.201 dev eth1 root@xxxxxxx:/etc/init.d$ ip ro s t 20 10.1.1.1 dev eth2 scope link src 10.1.1.2 default via 10.1.1.1 dev eth2
