Re: [mpls] Update to draft-ietf-mpls-sfc-02.txt

The new section 4.4 text (plus a small wording change in section 12)
addresses my previous comments on the draft.

Adrian, thanks!

Cheers,
Andy

On Sun, Aug 5, 2018 at 7:02 PM, Adrian Farrel <adrian@olddog.co.uk> wrote:

> Hi,
>
> In Montreal, Andy said he would send some proposed text for inclusion in
> section
> 4.4 of this draft to help resolve the concern about the overlap between the
> "micro chains" described in that section and SFC achieved using MPLS-SR as
> described in section 4.5 and draft-xuclad-spring-sr-service-chaining.
>
> Andy did that very promptly, and I have just got round to posting the
> update.
>
> Now would be a good time to look through the draft to see whether there
> are any
> further issues the authors should be attending to.
>
> Thanks,
> Adrian
>
> > -----Original Message-----
> > From: mpls [mailto:mpls-bounces@ietf.org] On Behalf Of internet-
> > drafts@ietf.org
> > Sent: 05 August 2018 16:54
> > To: i-d-announce@ietf.org
> > Cc: mpls@ietf.org
> > Subject: [mpls] I-D Action: draft-ietf-mpls-sfc-02.txt
> >
> >
> > A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> > This draft is a work item of the Multiprotocol Label Switching WG of the
> IETF.
> >
> >         Title           : An MPLS-Based Forwarding Plane for Service
> Function
> Chaining
> >         Authors         : Adrian Farrel
> >                           Stewart Bryant
> >                           John Drake
> >       Filename        : draft-ietf-mpls-sfc-02.txt
> >       Pages           : 28
> >       Date            : 2018-08-05
> >
> > Abstract:
> >    Service Function Chaining (SFC) is the process of directing packets
> >    through a network so that they can be acted on by an ordered set of
> >    abstract service functions before being delivered to the intended
> >    destination.  An architecture for SFC is defined in RFC7665.
> >
> >    The Network Service Header (NSH) can be inserted into packets to
> >    steer them along a specific path to realize a Service Function Chain.
> >
> >    Multiprotocol Label Switching (MPLS) is a widely deployed forwarding
> >    technology that uses labels placed in a packet in a label stack to
> >    identify the forwarding actions to be taken at each hop through a
> >    network.  Actions may include swapping or popping the labels as well,
> >    as using the labels to determine the next hop for forwarding the
> >    packet.  Labels may also be used to establish the context under which
> >    the packet is forwarded.
> >
> >    This document describes how Service Function Chaining can be achieved
> >    in an MPLS network by means of a logical representation of the NSH in
> >    an MPLS label stack.  It does not deprecate or replace the NSH, but
> >    acknowledges that there may be a need for an interim deployment of
> >    SFC functionality in brownfield networks.
> >
> >
> > The IETF datatracker status page for this draft is:
> > https://datatracker.ietf.org/doc/draft-ietf-mpls-sfc/
> >
> > There are also htmlized versions available at:
> > https://tools.ietf.org/html/draft-ietf-mpls-sfc-02
> > https://datatracker.ietf.org/doc/html/draft-ietf-mpls-sfc-02
> >
> > A diff from the previous version is available at:
> > https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-sfc-02
> >
> >
> > Please note that it may take a couple of minutes from the time of
> submission
> > until the htmlized version and diff are available at tools.ietf.org.
> >
> > Internet-Drafts are also available by anonymous FTP at:
> > ftp://ftp.ietf.org/internet-drafts/
> >
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