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: santiago@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."