On Monday 12 March 2007 22:26, Michael Flower wrote: > Hello. > > I am trying to get multi paths running, i.e I want to specify 2 paths > from a particular node to another. > > To test this, I am setting up the following scenario: > > I create 2 tap devices > tap0 = 10.1.1.1/32 netmask 255.255.255.0 > tap1 = 10.2.2.2/32 netmask 255.255.255.0 > > I then issue the route command: > > ip route add 10.3.3.3/32 nexthop via 10.1.1.2 nexthop via 10.2.2.3 > > The route table then looks like: > > 10.3.3.3 > nexthop via 10.1.1.2 dev tap0 weight 1 > nexthop via 10.2.2.3 dev tap1 weight 1 > > Pinging 10.3.3.3 causes arp requests on tap1 for 10.2.2.3 and never for > 10.1.1.2. > (there is nothing connected to tap0 or tap1 so I don't expect anything > really, but I do expect the ARP requests, which would show that > splitting would work. > > If the two routes were being used equally, I would have expected to see > arp requests for 10.1.1.2 also (wouldn't I?) no, route uses src_ip+dst_ip+TOS to build it's cache, so it will use the same cached routing desicion unless you change one of these 3 parameters. After cache expires, probably the other hop takes it's turn. -- Luciano _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
