[e-nsp] Getting ExtremeWare to accept Null Routes via BGP

Drew Weaver drew.weaver at thenap.com
Fri Feb 8 22:05:08 EST 2008


        Hi there, I am trying to add our one remaining black diamond to our RTBH configuration and I am finding it difficult to get ExtremeWare to accept routes into BGP which the "NextHop" is unreachable.

Of course, I made the NextHop unreachable, because that is the point...

i.e.

02/09/2008 02:00:34.94 <Summ:BGP.UpdateIn.RtRejNhUnreach> NLRI 10.1.2.184 /25
5.255.255.248 Type unicast Reject: NextHop 192.0.2.1 is unreachable

configure iproute add blackhole 192.0.2.1 255.255.255.255

we have that static route so that when we add a route to our route-server with the destination of 192.0.2.1 it will automatically Blackhole it on every switch on our network.

Does anyone have any clues?

Thanks,
-Drew


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