Re: [Idr] WG Last Call on draft-ietf-idr-as4bytes-11.txt

[Geoff Huston <[e-mail]>]

 > Would you prefer transit and stub to backbone and edge?

yes!

>It doesn't matter which AS converts to as4byte capable first as long
>as the deployment is very far along before 4 byte AS start showing up.


I have got to agree wholeheartedly here

   geoff


At 03:22 PM 13/10/2005, Curtis Villamizar wrote:

>In message <6.2.0.14.2.20051013143340.02e25900@localhost>
>Geoff Huston writes:
> >
> >
> > > > It's the other way around more likely. The edges of the internet are
> > > > more likely to go NEW first...
> > >
> > >    We've agreed that we should spec a transition which can work
> > >either way (backbone going 4-byte first or edges going 4-byte first).
> >
> > I do not understand this. Surprisingly, he earth is not flat.
>
>That is only a theory according to some proposed science curriculum
>revisions in the US.  [Is that too US Centric a joke?]
>
> > What is
> > an 'edge' and what is a 'backbone' are from an individual network
> > operator's perspective often arbitrary distinctions, and then talking
> > about which is these "goes first" is perhaps unhelpful What I like
> > about the draft as it stands is that it views transition as a set of
> > OLD / NEW and NEW / OLD transitions. That's simple and effective.  I
> > would not readily ascribe attributes to a transition spec that starts
> > from a premise of "backbones" and "edges" and then starts to talk
> > about which "goes first".
> >
> > regards,
> >
> >      Geoff
>
>Edges are things that are single homed or at most dual homed but the
>important thing is that they don't take full routes, don't provide any
>transit, and don't readvertise any routes that they learn from one
>Internet facing interface to another.
>
>Would you prefer transit and stub to backbone and edge?
>
>It doesn't matter if single homed stubs ever understand as4byte.  They
>don't really need to run an external routing protocol.  The dual homed
>non-transit might take a subset of routes, but if a few are missing
>they'll never know since they have a default (other than load balance
>might be affected).  As soon as an AS passes routes from one peer to
>another it might start to matter, but many small providers don't
>provide transit to any BGP peers and their customers are not (or
>should not be) passing routes to their other providers if dual homed
>to more than one provider.  These "edges" don't have to convert before
>a transition occurs.
>
>It doesn't matter which AS converts to as4byte capable first as long
>as the deployment is very far along before 4 byte AS start showing up.
>
>Curtis



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