[j-nsp] Is is possible to export prefixes which are not in inet.0?

dmitri at nominet.org.uk dmitri at nominet.org.uk
Tue Oct 4 06:07:35 EDT 2005


Hi,

I'm setting up a J2300 router as distributor of bogon routes to all our 
routers through private peering.
I am able to do this as in normal BGP peering, i.e. I can export routes 
which are in inet.0 rib. For this
I have to setup static routes in the default (inet.0) rib and then specify 
in a policy which prefixes I want
to export.
Now if I want to block some prefix on a particular router, on J2300 I have 
to setup this prefix
as static route and in export policy for this peer (router) to actually 
export it. I.e. I heve to specify the
same prefix in 2 places which may leave to errors.
I tried create separe ribs for every peer and then export everything in 
each of this ribs to corresponding
peers. It didn't work. Below is the example of how I tried to do this on 
J2300:

routing-options {
    rib inet.127 {
        static {
            ...
            route 5.0.0.0/8 discard;
            ...
        }
    }
....
}
protocols {
    bgp {
...
        group TEST {
            type external;
            description "Test peering";
            multihop {
                ttl 255;
            }
            export iana-reserved;
            peer-as 65002;
            neighbor 10.0.0.1;
            }
        }
    }
}
policy-options {
        policy-statement iana-reserved {
        term 1 {
            from {
                rib inet.127;
            }
            then accept;
        }
        term 2 {
            then reject;
        }
    }
}

#show route table inet.127
inet.127: 7 destinations, 7 routes (6 active, 0 holddown, 1 hidden)
+ = Active Route, - = Last Active, * = Both

....
5.0.0.0/8          *[Static/5] 3d 03:02:25
                      Discard
...

#show route advertising-protocol bgp 10.0.0.1 all

#

So it doesn't advertise anything.
What am I doing wrong? Or are there ways to achieve the same expected 
results?

Thank you
Dmitri


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