On Mon, May 13, 2019 at 12:49:06PM +0300, Alexander Shikov wrote: > Hello! > > All of our BGP peers have 'prefer older' option enabled. > But I noticed that best route is not the oldest one:
Hi The option 'prefer older' is a bit misnomer, it does not mean the one with the oldest timestamp, but it means 'prefer current best route'. So if route A was selected first, then route B was updated, and then route A was updated again (so it has more recent timestamp), then route A is still selected. -- 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."
