Another newbie question: Creating BGP prefixes in a filter

Maria Matějka maria.matejka at nic.cz
Sat Jun 20 19:46:13 CEST 2020


Hello,
Prefix aggregation is currently not supported. It's quite a lot of work to do it properly.
As a workaround, you may export these routes to an auxiliary kernel table, run an external script to maintain the aggregated route and learn the result back to BIRD. Or you can simply use the static protocol if your use case is simple enough. 
Maria

On June 20, 2020 7:36:47 PM GMT+02:00, "Elmar K. Bins" <elmi at noir.de> wrote:
>Hi guys,
>
>(status update: no solution for the OSPFv3 <--> IOS XR yet, no idea
>where to look, both sides pretend to be happy but are not)
>
>So....
>
>I need to create a prefix to be BGP-advertised to peers and transits;
>this
>would look like:
>
>if (net = xxx/32) {
> remove it and replace by yyy/zz;
>}
>
>(more or less standard prefix aggregation on the border)
>
>
>I could not find a hint of documentation in regard of doing a thing
>like this,
>where should I look?
>
>(We are currently forced to configure the wrong netmasks on loopback
>addresses,
>so BIRD has something to export)
>
>Yours,
>	Elmar.

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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