[LARTC] Multipath routing

[Michał Margula]

Hello!

	I have trouble with multipath routing. Those options are enabled in kernel:

[*]   IP: policy routing
[*]   IP: equal cost multipath
[*]     IP: equal cost multipath with caching support (EXPERIMENTAL)
<*>       MULTIPATH: round robin algorithm

But issuing:

ip r a 1.2.3.0/23 scope global equalize nexthop via 80.245.176.11 \
    dev eth0 weight 1 nexthop via 80.245.176.13 dev eth0 weight 1

and then

# ip r s
[...]
1.2.3.0/24
         nexthop via 80.245.176.11  dev eth0 weight 1
         nexthop via 80.245.176.13  dev eth0 weight 1

As you can see there is no equalize keyword in here.

Also I have trouble using multipath quagga, it simply doesn't put 
multipath route in routing table.

For example:

faramir# sh ip bgp 10.100.0.1
BGP routing table entry for 10.101.0.0/22
Paths: (2 available, best #1, table Default-IP-Routing-Table)
   Not advertised to any peer
   Local
     80.245.176.13 (metric 1) from 80.245.176.13 (80.245.177.4)
       Origin IGP, metric 0, localpref 100, weight 150, valid, internal, 
best
       Last update: Tue Jun  5 01:59:29 2007

   Local
     80.245.176.10 (metric 1) from 80.245.176.10 (80.245.176.10)
       Origin IGP, metric 0, localpref 100, weight 100, valid, internal
       Last update: Tue Jun  5 01:28:02 2007

# ip r s
[...]
10.100.0.0/22 via 80.245.176.11 dev eth0  proto zebra

But if I manually put something like that in quagga:

faramir(config)# ip route 1.2.3.0/24 80.245.176.13
faramir(config)# ip route 1.2.3.0/24 80.245.176.11

Then:

# ip r s
[...]
1.2.3.0/24
         nexthop via 80.245.176.11  dev eth0 weight 1
         nexthop via 80.245.176.13  dev eth0 weight 1


Please help, I am out of ideas.

-- 
Michał Margula, alchemyx at uznam.net.pl, http://alchemyx.uznam.net.pl/
"W życiu piękne są tylko chwile" [Ryszard Riedel]