On Fri, May 08, 2015 at 11:35:33PM +0200, Pavlos Parissis wrote:
> Hi,
>
> For each ip_prefix I advertize I need to add a BGP community in the form
> of (ASN,<RouterID>).
> I have the following mapping between IPs and RouterIDs
>
> ip_prefix, RouterID
> 10.10.10.1, 1
> 10.10.10.2, 2
> 10.10.10.3, 3
> 10.10.10.4, 1
> 10.10.10.5, 2
> 10.10.10.6, 3
> .....
>
> So, inside a function I need to express the following
> lookup_community_router_id() {
> return some_kind_of_dict_structure(net.ip)
> }
>
> and the use it in a filter/function
> filter {
> bgp.community((1111, lookup_community_router_id(net)));
> accept;
> }
>
> Is this possible?
Hi
Surprisingly, it is possible - you could use big case expression which
returns appropriate value. As case uses the same implementation as sets,
it will be fairly efficient:
function lookup(ip val)
{
case val {
10.10.10.1: return 1;
10.10.10.2: return 2;
...
}
return 0;
}
--
Elen sila lumenn' omentielvo
Ondrej 'Santiago' Zajicek (email: santi...@crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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