Gunter,
> On Nov 20, 2025, at 7:13 AM, Gunter Van de Velde via Datatracker > <[email protected]> wrote: > ---------------------------------------------------------------------- > DISCUSS: > ---------------------------------------------------------------------- > #2# [Updated] accurately gauge descriptions. Discussion on what is > primary/backup path/route exactly means is unclear. The draft states for > example: > > " > Primary route: A BGP route to a prefix that is considered the best route by > the > BGP decision process [RFC4271]. A prefix can have more than one primary route. The portion about best path by the decision process is RFC 4271 clear. I'm unclear what "more than one primary route" is intended to mean since that's not possible in RFC 4271. > > Backup route: A backup route is eligible for route selection, but it is not > selected as the primary route and is also installed in the Loc-RIB. Backup > routes are used for fast convergence in the event of failures. " This part is contrary to RFC 4271 in terms of "also installed in the Loc-Rib". The "eligible for route selection" needs a bit more RFC 4271-speak, but is otherwise acceptable. > > There is unclarity between what is primary route, bgp best path selected and > active route. There's no such thing as "active route" in the BGP specifications. :-) That's part of our disconnects. > The BGP process yields only a single BGP path, but multiple > routes (-more as only the BGP single best path) can be yielded into actively > forwarding traffic (ECMP or uECMP). > > The backup route, may be used for FRR, but that is not always true. Maybe > slghtly soften the text. Or also BGP multipath, but that's also not standardized. -- Jeff _______________________________________________ GROW mailing list -- [email protected] To unsubscribe send an email to [email protected]
