ospf,kernel and ECMP

[Volodymyr Samodid]

Hello. I have some problem with ecmp in bird. We try to migrate from quagga to bird and have faced with ecmp problem in our schema. r0-2 - are Linux routers,debian, with bird 1.3.10-1 from debian repo. Both r1,r2 inject default route to area 1 as expected. But r0 inject to kernel only one route. r0 bird> show route 0.0.0.0/0 via 10.200.1.101 on eth0 [onat_ospf 13:05] * IA (150/1010) [10.200.2.101] 10.200.1.0/24 dev eth0 [direct1 18:05] * (240) dev eth0 [onat_ospf 18:20] I (150/10) [10.200.2.100] bird> show ospf lsadb Area 0.0.0.1 Type LS ID Router Age Sequence Checksum 0001 10.200.1.10 10.200.1.10 660 8000008a 2fc1 0003 0.0.0.0 10.200.2.100 947 80000029 64ad 0002 10.200.1.100 10.200.2.100 963 8000002e c3a4 0001 10.200.2.100 10.200.2.100 547 80000083 796c 0003 0.0.0.0 10.200.2.101 967 8000002c 58b5 0001 10.200.2.101 10.200.2.101 955 80000079 8b61 bird> show ospf state area 0.0.0.1 router 10.200.1.10 distance 0 network 10.200.1.0/24 metric 10 router 10.200.2.100 distance 10 network 10.200.1.0/24 metric 10 xnetwork 0.0.0.0/0 metric 1000 router 10.200.2.101 distance 10 network 10.200.1.0/24 metric 10 xnetwork 0.0.0.0/0 metric 1000 network 10.200.1.0/24 dr 10.200.2.100 distance 10 router 10.200.2.100 router 10.200.1.10 router 10.200.2.101 r0:~# ip ro sh default via 10.200.1.101 dev eth0 proto bird 10.200.1.0/24 dev eth0 proto kernel scope link src 10.200.1.10 With quagga all fine. r0# show ip route Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF, I - IS-IS, B - BGP, A - Babel, > - selected route, * - FIB route O>* 0.0.0.0/0 [110/1010] via 10.200.1.100, eth0, 00:00:35 * via 10.200.1.101, eth0, 00:00:35 O 10.200.1.0/24 [110/10] is directly connected, eth0, 00:00:35 C>* 10.200.1.0/24 is directly connected, eth0 C>* 127.0.0.0/8 is directly connected, lo I have found some reference in ospf doc about it ecmp switch [limit number] but if I understand right, this refers only for ospf behavior. How does bird process ecmp routes? Can bird proccess ecmp routes like quagga ? Thanks. -- С уважением, Самодед Владимир SVAJ-RIPE|SVA88-UANIC