Newbie question - create filter for prefixes to export and also modify bgp next hop

Ondrej Filip feela at network.cz
Wed Mar 2 11:32:15 CET 2011


On 2.3.2011 10:36, Mathias Wolkert wrote:
> Hi
> 
> As said, I'm new to BIRD and struggling a bit with the config syntax.
> 
> I'll try to explain what I want to do.
> 
> I have a few prefixes, lets say 10.1.1.0/24, 10.2.2.0/24, 10.3.3.0/24.
> I want to announce these (and only these) in a BGP session, but with a
> modified next hop.
> 
> How would I do this?

Add this export filter to you BGP session:

export filter {
	if net ~ [10.1.1.0/24, 10.2.2.0/24, 10.3.3.0/24] then {
		bgp_next_hop = X.X.X.X;
		accept;
	}
	else reject;
};

(I did not check syntax, maybe some ';' is missing.
		Ondrej
	

> 
> Any help is much appreciated.
> 
> /Tias




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