Hello!
I'm trying to increase the efficiency of ECMP on links between cities
without static routes. On the same physical network (routers and links)
I'm trying to run multiple independent OSPF protocols area 0 with
different IDs (instance id).
Example config file:
protocol ospf v2 igpcore4 {
ipv4 {
table igpcoret4;
import filter {
ospf_metric1 = 100;
accept;
};
export all;
};
ecmp on limit 12;
merge external on;
area 0.0.0.0 {
interface "A2.1" { type pointopoint; bfd on; ecmp weight 10; cost
1000; };
interface "A2.2" { type pointopoint; bfd on; ecmp weight 10; cost
1000; };
interface "A3.1" { type pointopoint; bfd on; ecmp weight 10; cost
1000; };
interface "A3.2" { type pointopoint; bfd on; ecmp weight 10; cost
1000; };
interface "A1.1" { type pointopoint; bfd on; ecmp weight 10; cost
500; };
interface "A1.2" { type pointopoint; bfd on; ecmp weight 10; cost
500; };
};
};
protocol ospf v2 igpcore4_1 {
ipv4 {
table igpcoret4;
import filter {
ospf_metric1 = 100;
accept;
};
export all;
};
ecmp on limit 12;
merge external on;
instance id 1;
area 0.0.0.0 {
interface "A2.1" { type pointopoint; bfd on; ecmp weight 10; cost
500; };
interface "A2.2" { type pointopoint; bfd on; ecmp weight 10; cost
500; };
interface "A3.1" { type pointopoint; bfd on; ecmp weight 10; cost
500; };
interface "A3.2" { type pointopoint; bfd on; ecmp weight 10; cost
500; };
interface "A1.1" { type pointopoint; bfd on; ecmp weight 10; cost
1000; };
interface "A1.2" { type pointopoint; bfd on; ecmp weight 10; cost
1000; };
};
};
I got this results area 0 instance 0 in protocol igpcore4 and area 0
instance 1 in protocol igpcore4_1
BIRD 2.0.9 ready.
bird> show route for 10.10.97.33/32 all
Table igpcoret4:
10.10.97.33/32 unicast [igpcore4_1 11:58:31] * E2 (150/100/10000)
[10.10.97.33]
via 10.112.0.1 on A2.1 weight 10
via 10.112.0.3 on A2.2 weight 10
via 10.112.0.5 on A3.1 weight 10
via 10.112.0.7 on A3.2 weight 10
Type: OSPF-E2 univ
OSPF.metric1: 100
OSPF.metric2: 10000
OSPF.tag: 0x00000000
OSPF.router_id: 10.10.97.33
unicast [igpcore4 11:58:31] E2 (150/100/10000)
[10.10.97.33]
via 10.112.0.1 on A2.1 weight 10
via 10.112.0.3 on A2.2 weight 10
via 10.112.0.5 on A3.1 weight 10
via 10.112.0.7 on A3.2 weight 10
via 10.112.0.9 on A1.1 weight 10
via 10.112.0.11 on A1.2 weight 10
Type: OSPF-E2 univ
OSPF.metric1: 100
OSPF.metric2: 10000
OSPF.tag: 0x00000000
OSPF.router_id: 10.10.97.33
How to megre these routes and get a single route with 6 next hops
interfaces.... Maybe via pipe or other variants?
--
Regards,
Mikhail V. Majorov
