[j-nsp] bgp_nexthop_sanity messages on my M20

[Stéphane Grosjean]

Hi,

As Stefan pointed out, it means the router is ignoring some routes it's receiving. One possible reason is that it thinks the routes sent are from itself (it already has the routes in its BGP routing table). Such a thing can happen if you redistribute your IGP into your BGP, for example. Check your routes and policies between those routers, maybe a typo has occured in a recent configuration modification).


Regards,


Stephane.

>Your router is in urgent need of psychiatric assistance. ;)
>
>In all seriousness, it means it's ignoring the routes because they are
>failing the sanity checks... have you performed traceoptions on the
>sender and the receiver to determine what the next hop is on each?
>
>Stefan Fouant
>
>On Thu, Apr 10, 2008 at 4:50 PM, Dave D <davedmma at gmail.com> wrote:
>> Hello all,
>>
>>  So I have 2 Juniper M20 Routers running   Junos 7.6R4.3
>>
>>
>>  Last night I started to get this message in my logs
>>
>> Apr 10 15:44:59  juniper2  rpd[94308]: bgp_nexthop_sanity: peer X.X.X.X
>> (Internal AS (AS# ) next hop (L) local, ignoring routes in this update
>> And I keep seeing this message over and over again,
>> does anyone know offhand what it might be?
>> has anyone ever encountered this issue before?
>>
>> any help is appreciated.
>>
>> ~Dave