route server appears to be selecting preferred routes and not all routes

[Ondrej Zajicek]

On Mon, Aug 20, 2018 at 02:59:55PM -0700, Stephen Fromm wrote:
> We are running bird as a route server to support a small IX.  The
> challenge we are having is that it appears that bird is selecting a
> preferred route from what is advertised to the route servers and then
> advertising back out only the preferred route to all members, instead of
> advertising all routes received for a given network.  Included below are
> relevant configuration snippets, logs, and some show commands.
> 
> How do I configure bird to keep the routes learned from all peers and
> advertise those back out to the members and not select a preferred
> route?

Hi

As others already wrote, this is the standard BGP behavior. But you have
enabled 'add paths tx', so if the peer also has ADD PATH support, it should
work - you should check 'show protocols all' to see received capabilities
and established mode of BGP session.

Also note that you have bot 'secondary' and 'add path tx' options - these
options enables different ways how to solve the issue, so you should
enable either one. It is possible that enabling both does not work
properly.

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at 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."