On Thu, Jan 03, 2019 at 11:10:00PM +0000, Xavier Trilla wrote: > Hi, > > For some route selection configurations I need to check the bgp_path.len > without some AS numbers. > > I tried something like: > > bgp_path.delete(AS_1); > bgp_path.delete(AS_2); > > if bgp_path.len < N then ... > > But doing this I modify permanently the AS path. > > I've tried using a temp variable, but looks like bird doesn't allow to create > bgppath "variables".
Hi
Although approach suggested by Alexander Zubkov is applicable,
i would note that BIRD allows bgppath variables, see:
filter testfilter
bgppath pp;
{
pp = bgp_path;
pp = prepend(pp, 65500);
pp = prepend(pp, 65500);
print pp, " ", pp.len;
accept;
}
The only think that is strange is that operators like delete or prepend
cannot be used with 'dot-syntax' (i.e. pp.prepend(X)), but must be used
with 'function-syntax' (i.e. pp = prepend(pp, X)).
--
Elen sila lumenn' omentielvo
Ondrej 'Santiago' Zajicek (email: [email protected])
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
signature.asc
Description: PGP signature
