ipv6 ecmp ospf

6 Apr 2014

      Hi all. I'm try to get working ecmp with ipv6 and bird 1.4.
Now i'm not understand why routes to test ip installed and removed
after 3-5 seconds. Can somebody helps me?

In log i have :
Apr  6 15:14:31 rl01 bird6: device1: Scanning interfaces
Apr  6 15:14:31 rl01 bird6: kernel1: Scanning routing table
Apr  6 15:14:31 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: will be updated
Apr  6 15:14:31 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: already seen
Apr  6 15:14:31 rl01 bird6: kernel1: Pruning table master
Apr  6 15:14:31 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: updating
Apr  6 15:14:31 rl01 bird6: Netlink: No such process
Apr  6 15:14:31 rl01 bird6: kernel1: Pruning inherited routes
Apr  6 15:14:32 rl01 bird6: radv1: Timer fired on eth1
Apr  6 15:14:32 rl01 bird6: radv1: Sending RA via eth1
Apr  6 15:14:32 rl01 bird6: radv1: Timer fired on eth0
Apr  6 15:14:32 rl01 bird6: radv1: Sending RA via eth0
Apr  6 15:14:32 rl01 bird6: ospf1: HELLO packet received from
fe80::225:90ff:fe97:a719 via eth1
Apr  6 15:14:32 rl01 bird6: ospf1: HELLO packet received from
fe80::225:90ff:fe97:a718 via eth0
Apr  6 15:14:37 rl01 bird6: device1: Scanning interfaces
Apr  6 15:14:37 rl01 bird6: kernel1: Scanning routing table
Apr  6 15:14:37 rl01 bird6: kernel1: Pruning table master
Apr  6 15:14:37 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: reinstalling
Apr  6 15:14:37 rl01 bird6: kernel1: Pruning inherited routes
Apr  6 15:14:37 rl01 bird6: ospf1: HELLO packet sent via eth1
Apr  6 15:14:37 rl01 bird6: ospf1: HELLO packet sent via eth0
Apr  6 15:14:37 rl01 bird6: ospf1: HELLO packet received from
fe80::225:90ff:fe97:a719 via eth1
Apr  6 15:14:37 rl01 bird6: ospf1: HELLO packet received from
fe80::225:90ff:fe97:a718 via eth0
Apr  6 15:14:42 rl01 bird6: ospf1: HELLO packet sent via eth0
Apr  6 15:14:42 rl01 bird6: ospf1: HELLO packet sent via eth1
Apr  6 15:14:42 rl01 bird6: device1: Scanning interfaces
Apr  6 15:14:42 rl01 bird6: kernel1: Scanning routing table
Apr  6 15:14:42 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: will be updated
Apr  6 15:14:42 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: already seen
Apr  6 15:14:42 rl01 bird6: kernel1: Pruning table master
Apr  6 15:14:42 rl01 bird6: kernel1:
2001:db8:0:f101:ccde:85ff:fe22:ec43/128: updating
Apr  6 15:14:42 rl01 bird6: Netlink: No such process
Apr  6 15:14:42 rl01 bird6: kernel1: Pruning inherited routes
Apr  6 15:14:42 rl01 bird6: ospf1: HELLO packet received from
fe80::225:90ff:fe97:a719 via eth1
Apr  6 15:14:42 rl01 bird6: ospf1: HELLO packet received from
fe80::225:90ff:fe97:a718 via eth0

rl01 bird config:
log syslog all; #{error, info};

router id 172.16.250.251;

debug protocols all;

protocol kernel {
         learn;
         scan time 5;           # Scan kernel routing table every 20 seconds
         import all;            # Default is import all
         export all;            # Default is export none
}

protocol direct {
         interface "eth0", "eth1", "dummy0";
         export all;
         import all;
}

protocol device {
         scan time 5;           # Scan interfaces every 10 seconds
}

protocol radv {
         interface "eth0" {
                max ra interval 30;
                link mtu 9000;
                prefix 2001:db8:0:f102::/64;
         };
         interface "eth1" {
                max ra interval 30;
                link mtu 9000;
                prefix 2001:db8:0:f103::/64;
         };
}

filter ospf_filter {
       if net ~ [ ::/0 ] then reject;
       else accept;
}

protocol ospf {
         tick 5;
         ecmp 4;
         import filter ospf_filter;
         export all; #filter ospf_filter;
         area 0 {
              interface "eth0","eth1" {
                        check link yes;
                        cost 5;
                        hello 5;
                        retransmit 2;
                        wait 10;
                        dead 20;
                        ecmp weight 5;
              };
              interface "dummy0" {
                       stub yes;
                       cost 1;
              };
              stubnet 2001:db8:0:f101::/128;
         };
}

birdc6 show route
BIRD 1.4.0 ready.
2001:db8:0:f101:ccde:85ff:fe22:ec43/128 multipath [ospf1 15:14:27] ! I
(150/5) [172.16.250.8]
        via fe80::225:90ff:fe97:a718 on eth0 weight 5
        via fe80::225:90ff:fe97:a719 on eth1 weight 5
2001:db8:0:f101:e010:b8ff:feb6:d4a/128 dev dummy0 [direct1 15:14:16] * (240)
                   dev dummy0 [ospf1 15:14:17] I (150/0) [172.16.250.251]
2001:db8:0:f103::/64 dev eth1 [direct1 15:14:16] * (240)
                   dev eth1 [ospf1 15:14:27] I (150/5) [172.16.250.8]
2001:db8:0:f102::/64 dev eth0 [direct1 15:14:16] * (240)
                   dev eth0 [ospf1 15:14:27] I (150/5) [172.16.250.8]

birdc6 show ospf top
BIRD 1.4.0 ready.

area 0.0.0.0

        router 172.16.250.8
                distance 5
                network [172.16.250.8-2] metric 5
                network [172.16.250.8-3] metric 5

        router 172.16.250.251
                distance 0
                network [172.16.250.8-2] metric 5
                network [172.16.250.8-3] metric 5

        network [172.16.250.8-2]
                distance 5
                router 172.16.250.8
                router 172.16.250.251

        network [172.16.250.8-3]
                distance 5
                router 172.16.250.8
                router 172.16.250.251

birdc6 show ospf ne
BIRD 1.4.0 ready.
ospf1:
Router ID       Pri          State      DTime   Interface  Router IP
172.16.250.8      1         full/dr     00:20   eth0
fe80::225:90ff:fe97:a718
172.16.250.8      1         full/dr     00:20   eth1
fe80::225:90ff:fe97:a719

birdc6 show interfaces
BIRD 1.4.0 ready.
lo up (index=1)
        MultiAccess AdminUp LinkUp Loopback Ignored MTU=65536
        ::1/128 (Primary, scope host)
eth0 up (index=2)
        MultiAccess Broadcast Multicast AdminUp LinkUp MTU=9000
        2001:db8:0:f102:92e2:baff:fe31:44c/64 (Primary, scope univ)
        fe80::92e2:baff:fe31:44c/64 (Unselected, scope link)
eth1 up (index=3)
        MultiAccess Broadcast Multicast AdminUp LinkUp MTU=9000
        2001:db8:0:f103:92e2:baff:fe31:44d/64 (Primary, scope univ)
        fe80::92e2:baff:fe31:44d/64 (Unselected, scope link)
eth2 DOWN (index=4)
        MultiAccess Broadcast Multicast AdminDown LinkDown MTU=1500
eth3 up (index=5)
        MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500
        fe80::92e2:baff:fe31:44f/64 (Primary, scope link)
eth4 up (index=6)
        MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500
        fe80::225:90ff:fea1:82a6/64 (Primary, scope link)
eth5 DOWN (index=7)
        MultiAccess Broadcast Multicast AdminDown LinkDown MTU=1500
bond0 DOWN (index=8)
        MultiAccess Broadcast Multicast AdminDown LinkDown MTU=1500
ovs-system DOWN (index=9)
        MultiAccess Broadcast Multicast AdminDown LinkDown MTU=1500
ovs-vm up (index=10)
        MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500
        fe80::b485:3ff:fe6b:e1f5/64 (Primary, scope link)
dummy0 up (index=11)
        MultiAccess Broadcast Multicast AdminUp LinkUp MTU=1500
        2001:db8:0:f101:e010:b8ff:feb6:d4a/128 (Primary, scope univ)
        fe80::94c5:c3ff:fe84:dd26/64 (Unselected, scope link)

-- 
Vasiliy Tolstov,