BGP rejected by protocol

Ondrej Zajicek santiago at crfreenet.org
Tue Jul 21 19:49:32 CEST 2015


On Tue, Jul 21, 2015 at 01:19:56PM -0400, Chip Marshall wrote:
> Hello,
> 
> I'm attempting to use BIRD to redistribute routes from a couple
> of interesting BGP feed services (Cymru bogons and UTRS) to a
> bunch of our edge routers, but I'm hitting an issue where BIRD
> isn't exporting the routes to our edge, every prefix is getting a
> "rejected by protocol" message in the log.
> 
> bird6: edge1 < rejected by protocol 2407:dc20::/27 via [removed] on eth0
>
> Any pointers would be appreciated. I just wish "rejected by
> protocol" would provide a bit more detail on why it was rejected.

Hello

'rejected by protocol' covers plenty of cases - not forwarding route
back, not forwarding between IBGP sessions, avoiding RR loops and default
community handling. Perhaps these routes have NO_EXPORT or NO_ADVERTISE
community set? In that case see 'interpret communities' option.

-- 
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."
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