ospf redistribute into openbgpd overwrites directly connected routes

[Tobias Urdin]

On 07/30/2018 05:08 PM, Eugene Grosbein wrote:
> 30.07.2018 21:06, Tobias Urdin wrote:
>
>> I have a setup where we connect a OSPF area with a edge router, this edge router then has a BGP peer to my router
>> where it redistributes all OSPF routes into the BGP feed to my router.
>>
>> My router is running FreeBSD 11.1 with openbgpd
>>
>> root at myrouter:~ # uname -a
>> FreeBSD dr20-1-sto1 11.1-RELEASE FreeBSD 11.1-RELEASE #0 r321309: Fri Jul 21 02:08:28 UTC 2017 root at releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64
>>
>> root at myrouter:~ # pkg info openbgpd
>> openbgpd-5.2.20121209_2
>> Name           : openbgpd
>> Version        : 5.2.20121209_2
>>
>> The thing here is that my router has layer 2 access directly to one of the networks that the edge router BGP announces to my router (172.20.104.0/22).
>> When my FreeBSD machine boots it will install a directly connected route for 172.20.104.0/22 in my routing table but as soon as openbgpd starts it will
>> install a 172.20.104.0/22 route with the nexthop of the edge router instead.
>>
>> How can I prevent openbgpd from overwriting the directly connected route?
>> Directly connected networks should never be overwritten by a routing protocol but I suspect this is because of the redistribute.
>>
>> I've tried messing with metrics, but maybe I to create a rtable and mess around with that?
> This problem was fixed in 11.2-RELEASE, just upgrade and you will be fine.
>
>
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Oh, that's great.

Thanks!