Re: Seeking opinions on draft-akiya-bfd-seamless-alert-discrim

[Glen Kent <[e-mail]>]

Nobo,

Why do you need this mechanism to discover the remote S-BFD discriminators,
when you already have ISIS and OSPF extensions to discover the remote S-BFD
targets.

Glen

On Thu, Jan 29, 2015 at 4:16 AM, Nobo Akiya (nobo) <[e-mail]> wrote:

> > To summarize:
> > - I will spawn off a separate thread for the alert discriminator soon.
>
> Hello BFD WG,
>
> Finally getting around to follow up on this AI.
>
>
> http://datatracker.ietf.org/doc/draft-akiya-bfd-seamless-alert-discrim/?include_text=1
>
> The document describes one simple extension: Let's make S-BFD
> discriminator zero(0) to have a special meaning.
>
> The primary driver for this is to allow an S-BFD initiator to discover the
> target S-BFD discriminator, by sending an S-BFD ping packet with
> your_disc=0 and getting back a valid S-BFD pong packet with "my_disc=<S-BFD
> discrimiantor>". In other words, when an S-BFD reflector receives an S-BFD
> ping packet with your_disc=0, it processes it because S-BFD discriminator
> zero(0) has a special meaning.
>
> Motivation for using this approach to discover the target S-BFD
> discriminator is described in Section 2.1 of the document.
>
> I think it is most important to discuss this, thus let's leave out
> discussions on other use of the S-BFD alert discriminator (i.e., Section
> 2.2) for now.
>
> Personally, I think this is very useful extension to the S-BFD mechanism
> that we've been working on. I'm curious to see what others think?
>
> Thanks!
>
> -Nobo
>
>