On Thu, Aug 30, 2012 at 01:33:09PM +0200, Joakim Tjernlund wrote:
3) I thought that for some reasons the ifindex in 'data' value of link in router LSA is somehow important in link-back check or next-hop calculation when there are parallel links, but it seems to be completely useless - local router does not need it and neighboring routers can't map their links to links in local router LSA, because they don't know local ifindexes.
It is useless now but bird used ifindex earlier to find its interface and I think many impl. still does.
BTW, i think BIRD didn't used the ifindex value in the past. Before current implementation it tried all ptp ifaces that have neighbor with given router ID. -- 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."