Re: Re: MPLS PWs over IP: Text for draft-ietf-pwe3-control-protocol-04.txt

Hi Mark,

On Thu, 4 Dec 2003, W. Mark Townsley wrote:

>
> Rahul Aggarwal wrote:
> > Hi Mark,
> >
> > On Wed, 3 Dec 2003, W. Mark Townsley wrote:
> >
> >
> >>Yakov Rekhter wrote:
> >>
> >>>Here is the proposed text:
> >>>
> >>>  Procedures for setting up and maintaining the PSN tunnels with GRE
> >>>  or IP are specified in [MPLS-OVER-IP-GRE].
> >>
> >>Rahul's proposal was also to remove this text:
> >>
> >>"Procedures for setting up and maintaining the PSN tunnels are outside the scope
> >>of this document."
> >>
> >>Which is why I said the proposal changes the scope of the document.
> >>
> >
> >
> > How about replacing
> >
> >    The PSN tunnel can itself be an LSP, but it could equally well
> >    be an IP tunnel, a GRE tunnel, an IPsec tunnel, or any other sort of
> >    tunnel which can carry MPLS packets. Procedures for setting up and
> >    maintaining the PSN tunnels are outside the scope of this document.
> >
> > with
> >
> >    The PSN tunnel can itself be an LSP, but it could equally well
> >    be an IP tunnel [MPLS-OVER-IP-GRE], a GRE tunnel [MPLS-OVER-IP-GRE],
> >    an IPsec tunnel, or any other sort of tunnel which can carry MPLS
> >    packets. Procedures for setting up and maintaining the PSN tunnels
> >    are outside the scope of this document.
>
> Better. However, *if* we are going to hit the text here turn what was a set of
> loose and unbounded examples into a list of specific references, I'd like to go

It is sill a set of unbounded examples. References are being added, to
relevant IETF documents, where possible.

> ahead and add L2TPv3 as an example of "any other sort of tunnel which can carry
> MPLS packets" and include a reference to draft-townsley-l2tpv3-mpls-01.txt.

draft-townsley-l2tpv3-mpls-01.txt is not a MPLS WG document.
MPLS-OVER-IP-GRE is.

> For consistency,

In this case MPLS over IP is the set. MPLS over IP/GRE is a subset with an
existing IETF document that describes the solution. For rest of the
subset there is no existing IETF document that describes the solution. But
that does not mean that we shouldn't reference the MPLS over IP/GRE
subset.

> we would need to reference your upcoming MPLS over IPsec
> encapsulation draft as well.

As I meantioned above, it is not an existing IETF doucument.

> I find it arbitrary to reference some examples and
> not others.
>

All possible examples are being listed *if* they are existing IETF
documents. That is a consistant approach and is not aribtrary.

rahul

> I'm also fine with just leaving the text as is.
>
> - Mark
>
> >
> >
> > Thanks,
> > rahul
> >
> >
> >>- Mark
> >>
> >>
> >>
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>
>