Hi Robert,
> Dear WG, > > Thank you Gyan for your note. > > It very clearly highlights my primary concern expressed earlier of false > assumptions on how engineers may try to (mis)use bfd-large in multihop > cases. > > Below note is a brilliant example of how one may not realize that actual > paths BFD packets take can be just a fraction of paths their data plane or > even other control plane packets may traverse over a network or set of > networks. > > I am always concerned when protocol extensions being standardized are known > to only work in 1 out of 10 deployment scenarios and when chances of such > opportunity of incorrect use are evident yet no safety inline fuse exist. > > Many thx, > Robert. As mentioned previously, there are well known cases where BFD can not determine data plane error, and this is not unique to the BFD Large Packet Draft. I do not know how other customers use BFD, but can say that in our network, almost all of our BFD use cases are P2P (IGP/eBGP) (and also Control-plane independent), where BFD Large Packet draft will be very useful and deterministic in identifying the issue as it happens. Thanks Albert
