Re: prefix advertisement in bpg

Before BGP can advertise the prefix it has to be in IGP. thats what the
null route is doing.

On Fri, Apr 12, 2013 at 10:01 PM, Imran Ali <immrccie_at_gmail.com> wrote:

> why some bgp implementations adds a null route for advertised prefixes
>
> ex
>
> router bgp 2
> bgp log-neighbor-changes
> network 128.16.16.0 mask 255.255.255.0
> network 130.130.0.0
> neighbor 10.10.10.1 remote-as 1 * neighbor 10.10.10.1 advertise-map
> ADVERTISE non-exist-map NON-EXIST***neighbor 10.10.20.3 remote-as 3
> !
> ip route 130.130.0.0 255.255.0.0 *Null0*
>
>
>
> is has something to do with NAT ?
>
>
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Received on Mon Apr 15 2013 - 10:14:58 ART