Hello,

I want to use the ospf protocol ecmp function, load balancing local to remote devices. 

Interface uses ipip tunnel connected. 

the local use FreeBSD 10.0-BETA1 and BIRD 1.3.11, using fib support multiple routing tables, gif interface is configured for parallel tunnels by setting the sysctl variable net.link.gif.parallel_tunnels to

1.

the remote use Ubuntu 13.04 and Quagga (version 0.99.22). 

Configured as follows: 

protocol ospf ospf_gif {

        table tab_ospf_gif;

        router id 192.168.148.17;

        ecmp yes ;

        export all;

        import all;

        preference 200;

        area 0.0.0.10 {

                interface "gif0" {

                        ecmp weight 3;

                        hello 10;

                        retransmit 5;

                        cost 10;

                        transmit delay 1;

                        dead count 4;

                        wait 40;

                        type pointopoint;

                        priority 0;

                        authentication cryptographic;

                        password "abc";

                };

                interface "gif1" {

                        hello 10;

                        retransmit 5;

                        cost 10;

                        transmit delay 1;

                        dead count 4;

                        wait 40;

                        type pointopoint;

                        priority 0;

                        authentication cryptographic;

                        password "abc";

                };                      

        };

}

protocol pipe pipe_gif

{

        table tab_ospf_gif;

        peer table master;

        import none;

        export all;

}

protocol kernel kernel_gif

{

        debug all;

        table tab_ospf_gif;

        export all;

        kernel table 10;

        scan time 15;

}

In the test if configured ecmp function, the local device using bird view master table, tab_ospf_gif two tables are learning two equal cost routes to the remote device (see below). 

bird> show route table master 

1007-0.0.0.0 / 0 multipath [ospf_gif 18:18] * E2 (200/10/10) [xxxx] 

     via 192.168.170.41 on gif0 weight 3 

     via 192.168.170.149 on gif1 weight 1 

bird> show route table tab_ospf_gif 

1007-0.0.0.0 / 0 multipath [ospf_gif 18:18] * E2 (200/10/10) [xxxx] 

     via 192.168.170.41 on gif0 weight 3 

     via 192.168.170.149 on gif1 weight 1 

But I can not see the route to the fib in freebsd. Why? ? 

I look protocols, found that the route was refused entry, as follows: 

1002-kernel_gif Kernel   tab_ospf_gif up     18:42       

1006-  Preference:     10

       Input filter:   ACCEPT

       Output filter:  ACCEPT

       Routes:         0 imported, 0 exported, 0 preferred

       Route change stats:     received   rejected   filtered    ignored   accepted

         Import updates:              0          0          0          0          0

         Import withdraws:            0          0        ---          0          0

         Export updates:              3          3          0        ---          0

         Export withdraws:            0        ---        ---        ---          0

Use debug discovery and found the following: 

09-01-2014 23:58:45 <TRACE> kernel_gif <rejected by protocol 0.0.0.0 / 0 multipath 

09-01-2014 23:58:45 <TRACE> kernel_gif <rejected by protocol 192.168.170.40/30 multipath 

09-01-2014 23:58:45 <TRACE> kernel_gif <rejected by protocol 192.168.170.148/30 multipath 

If I do not use ecmp function, fib table freebsd system can view the routing entries, but only a single path.

thank you very much.