Routing

Hi, I am trying to get an ebgp route into ospf:

policy-statement bgp-to-ospf {
    from {
        protocol bgp;
        route-filter 192.168.10.0/24 exact;
    }
    then accept;
}

I export this to edit protocols ospf, but the route is not exported.

Am I doing something wrong?

Hi

 Can you please provide the output of commands "show route"  and "show route detail 192.168.10.0/24" commands outputs.

Thanks

Suresh

Hello, thanks for your reply:

SRX-3600-0> show route

inet.0: 46 destinations, 60 routes (46 active, 0 holddown, 0 hidden)
Restart Complete
+ = Active Route, - = Last Active, * = Both

192.168.11.0/30    *[OSPF/10] 3d 23:27:38, metric 101
                    > to 10.170.10.252 via reth0.0
198.140.0.0/16     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 ?
                    > to 10.170.11.2 via reth1.0
198.140.1.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.2.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.3.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.4.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.5.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.6.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.7.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.8.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.9.0/24     *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
198.140.10.0/24    *[BGP/170] 3d 17:36:45, MED 10, localpref 2000
                      AS path: 65221 I
                    > to 10.170.11.2 via reth1.0
                    [BGP/170] 3d 17:28:08, MED 0, localpref 1000
                      AS path: 65221 I
                    > to 10.170.11.3 via reth1.0
224.0.0.2/32       *[PIM/0] 6d 22:28:15
                      MultiRecv
224.0.0.5/32       *[OSPF/10] 6d 22:28:15, metric 1
                      MultiRecv
224.0.0.13/32      *[PIM/0] 6d 22:28:15
                      MultiRecv
224.0.0.22/32      *[IGMP/0] 6d 22:28:15
                      MultiRecv

inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Restart Complete
+ = Active Route, - = Last Active, * = Both

ff02::2/128        *[PIM/0] 6d 22:28:15
                      MultiRecv
ff02::d/128        *[PIM/0] 6d 22:28:15
                      MultiRecv

----------------------------------

SRX-3600-0> show route detail 192.168.10.0/24

inet.0: 46 destinations, 60 routes (46 active, 0 holddown, 0 hidden)
Restart Complete
192.168.10.0/30 (1 entry, 1 announced)
        *BGP    Preference: 170/-2001
                Next hop type: Router, Next hop index: 563
                Next-hop reference count: 30
                Source: 10.170.11.2
                Next hop: 10.170.11.2 via reth1.0, selected
                State: <Active Ext>
                Local AS: 65300 Peer AS: 65221
                Age: 3d 17:38:20        Metric: 10
                Task: BGP_65221.10.170.11.2+179
                Announcement bits (1): 0-KRT
                AS path: 65221 ?
                Accepted
                Localpref: 2000
                Router ID: 10.10.10.3

Hi,

I did not found the route 192.168.10.0/24 in the show route command output.

To export the route from local routing table, the route must present in the local inet.0 routing table.

So, Please ensure that route is present in routing table, then I hope every thing works fine.

Thanks

Suresh

Sorry, I have changed the route-filter statement on the policy to 192.168.10.0/30 0- still doesn't work

SRX-3600-0# run show route detail 192.168.10.0/30

inet.0: 46 destinations, 60 routes (46 active, 0 holddown, 0 hidden)
Restart Complete
192.168.10.0/30 (1 entry, 1 announced)
        *BGP    Preference: 170/-2001
                Next hop type: Router, Next hop index: 563
                Next-hop reference count: 30
                Source: 10.170.11.2
                Next hop: 10.170.11.2 via reth1.0, selected
                State: <Active Ext>
                Local AS: 65300 Peer AS: 65221
                Age: 3d 18:44:14        Metric: 10
                Task: BGP_65221.10.170.11.2+179
                Announcement bits (2): 0-KRT 2-OSPF
                AS path: 65221 ?
                Accepted
                Localpref: 2000
                Router ID: 10.10.10.3

SRX-3600-0# show policy-options policy-statement bgp-to-ospf
from {
    protocol bgp;
    route-filter 192.168.10.0/30 exact;
}
then accept;

SRX-3600-0# run show route protocol ospf

inet.0: 46 destinations, 60 routes (46 active, 0 holddown, 0 hidden)
Restart Complete
+ = Active Route, - = Last Active, * = Both

2.2.2.2/32         *[OSPF/10] 6d 20:19:15, metric 101
                      to 10.170.10.252 via reth0.0
                    > to 10.170.10.253 via reth0.0
10.48.0.0/16       *[OSPF/150] 18:22:35, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
10.48.1.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                      to 10.170.10.252 via reth0.0
                    > to 10.170.10.253 via reth0.0
10.48.2.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
10.48.3.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                      to 10.170.10.252 via reth0.0
                    > to 10.170.10.253 via reth0.0
10.48.4.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
10.48.5.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                      to 10.170.10.252 via reth0.0
                    > to 10.170.10.253 via reth0.0
10.48.6.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
10.48.7.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
10.48.8.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
10.48.9.0/24       *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
10.48.10.0/24      *[OSPF/150] 6d 20:13:59, metric 10, tag 0
                    > to 10.170.10.252 via reth0.0
                      to 10.170.10.253 via reth0.0
192.168.11.0/30    *[OSPF/10] 4d 00:35:57, metric 101
                    > to 10.170.10.252 via reth0.0
224.0.0.5/32       *[OSPF/10] 6d 23:36:34, metric 1
                      MultiRecv

SRX-3600-0# show protocols ospf
traceoptions {
    file ospf.txt;
    flag policy;
}
export bgp-to-ospf;
area 0.0.0.0 {
    interface reth0.0 {
        metric 100;
        priority 0;
        hello-interval 3;
        dead-interval 10;
        authentication {
            md5 1 key "
        }
    }
    interface reth2.503 {
        passive;
    }
}

Hi Paul,

Sorry to bother you,

Can you please post show route commands output. Because I did not find the 192.168.10.0/30 BGP route installed in your active routing table. As per the policy configured,

Policy will search for 192.168.10.0/30 BGP route in its inet.0 routing table (show route) command and if the entry in the routing table matches then it will export the route to OSPF.

And also please modify the route-filter 192.168.10.0/30 exact to route-filter 192.168.10.0/30 orlonger.

Thanks 

Thanks, I can see the route is being advertised to the neighbor

Hello,

In your routing-policy you are using "exact" keyword. Well, "exact" means precisely that - the route MUST have spot-on prefix and netmask. So if you want to export 192.168.10.0/24 route, then I am afraid you don't have this route (prefix 192.168.10.0 netmask 255.255.255.0) in your routing table.

You have a "similar" route 192.168.11.0/30 though. To export "similar" routes like it, change your policy:

set policy-options policy-statement bgp-to-ospf term 1 from protocol bgp
set policy-options policy-statement bgp-to-ospf term 1 from route-filter 192.168.10/23 orlonger
set policy-options policy-statement bgp-to-ospf term 1 then accept

HTH

Rgds

Alex

Hi Alex,

The 192.168.11.0/30, is already a  OSPF route. so no need to export that route. He wants BGP routes to be be exported.

There is no BGP route which is matching 192.168.10.0/24 prefix, may be changing "prefix-list to orlonger" is also a good to move forward as you said.

Hi,

Thanks for your help.

I just want the 192.168.10.0/30 exported from BGP to ospf.

Thanks,

Paul