RE: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt

Hi Tim,

The specific case I am considering is documented here:

https://datatracker.ietf.org/doc/draft-templin-v6ops-pdhost/

But in general the RFC1122 considerations for hosts that act as routers,
including what is meant by “weak end system” and “strong end system”,
should probably be discussed in the IPv6 docs.

Thanks - Fred

From: Timothy Winters [mailto:twinters@iol.unh.edu]
Sent: Wednesday, September 20, 2017 7:56 AM
To: Templin, Fred L <Fred.L.Templin@boeing.com>
Cc: Tim Chown <Tim.Chown@jisc.ac.uk>; Russ White <russ@riw.us>; ipv6@ietf.org
Subject: Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt

Hi Fred,

The first thing that came to mind reading your email is your are talking about a CE Router (RFC 7084).   Acts as a Host on the WAN, but a Router on the LAN interface.

I would not be in favor of trying to document that behavior in node requirements.  I would prefer to keep it simple, or are you thinking of a case that's not covered in RFC 7084?

Regards,
Tim

On Wed, Sep 20, 2017 at 10:50 AM, Templin, Fred L <Fred.L.Templin@boeing.com<mailto:Fred.L.Templin@boeing.com>> wrote:
Hi Tim,

> -----Original Message-----
> From: Tim Chown [mailto:Tim.Chown@jisc.ac.uk<mailto:Tim.Chown@jisc.ac.uk>]
> Sent: Wednesday, September 20, 2017 2:01 AM
> To: Templin, Fred L <Fred.L.Templin@boeing.com<mailto:Fred.L.Templin@boeing.com>>
> Cc: ipv6@ietf.org<mailto:ipv6@ietf.org>; Russ White <russ@riw.us<mailto:russ@riw.us>>
> Subject: Re: I-D Action: draft-ietf-6man-rfc6434-bis-01.txt
>
> Hi,
>
> > On 19 Sep 2017, at 18:23, Templin, Fred L <Fred.L.Templin@boeing.com<mailto:Fred.L.Templin@boeing.com>> wrote:
> >
> > I realize that this goes back to the previous node requirements docs (RFC6434
> > and RFC4294), but shouldn't this document cite RFC1122 and RFC1812?
>
> RFC1122 could be added in the intro.
>
> I’d suggest RFC1812 could be reviewed/cited in draft-ietf-v6ops-ipv6rtr-reqs-00, something for Russ to consider.

OK, thanks. One of the reasons I ask is because I think our IPv6 node/router
requirements documents are missing something important that appeared
in these earlier standards - the model of a host that also acts as a router.

RFC1122 calls them "end systems", or "hosts with embedded gateway".
They host their own local applications and can also forward packets on
behalf of nodes connected to a downstream interface. The model has
significant implications for Internet of Things.

Do we want to import that language into our IPv6 requirements docs?

Thanks - Fred

> Tim
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