Re: [v6ops] Updating RFC 7084

Isn’t mobile backup a form of multi-homing?

Op wo 30 nov. 2022 om 09:36 schreef Chongfeng Xie <xiechf@chinatelecom.cn>

> Regarding to multi-homing, home users have no needs for multi-homing, which
> provides access by two wireline uplinks of different operators.
> Independent 4G/5G mobile broadband has gradually become the backup of home
> broadband, some users even prefer to use use mobile link to access the
> Internet at home.
>
> Chongfeng
> ------------------------------
> xiechf@chinatelecom.cn
>
>
> *From:* Brian E Carpenter <brian.e.carpenter@gmail.com>
> *Date:* 2022-11-19 04:02
> *To:* Timothy Winters <tim@qacafe.com>; IPv6 Operations <v6ops@ietf.org>
> *Subject:* Re: [v6ops] Updating RFC 7084
> On 19-Nov-22 03:47, Timothy Winters wrote:
> > Hello,
> >
> > I've started a draft to update RFC 7084 to support prefix delegation on
> the LAN interfaces.  The current state of IPv6 in home networks is ISP are
> assigning prefixes of appropriate sizes but they currently are under
> utilized due to the lack of prefix delegation on LAN interfaces.
> >
> > This draft is an attempt to add that support to the draft.
> >
> > https://datatracker.ietf.org/doc/draft-winters-v6ops-cpe-lan-pd/ <
> https://datatracker.ietf.org/doc/draft-winters-v6ops-cpe-lan-pd/>
> >
> > This is only an update to 7084 at the moment, there has been some
> discussion on the snac working group about leveraging this work as well.
> >
> > One item being discussed is this currently doesn't solve multi-homed
> networks.
>
> As a historical note, we've spent a lot of time in the past on multi-homing
> and more or less failed (and the HOMENET approach was designed for home
> nets,
> not for enterprises where the problem is probably more important).
>
> I
>
> To summarise what I've said over on SNAC:
>
> 1. If we're going to mention PvDs in the 7084 update, I think we should
> also mention RFC 8028. It isn't that a CE router should necessarily
> support 8028, but that in a network that does implement 8028 on its subnet
> routers, the following part of 8028 applies:
>
> 2.2.  Expectations of Multihomed Networks
>
>     Networking equipment needs to support source/destination routing for
>     at least some of the routes in the Forwarding Information Base (FIB),
>     such as default egress routes differentiated by source prefix.
>     Installation of source/destination routes in the FIB might be
>     accomplished using static routes, Software-Defined Networking (SDN)
>     technologies, or dynamic routing protocols.
>
> Those egress routes of course lead to CE routers.
>
> (There is some other thinking about this topic in
> draft-vv-6man-nd-support-mhmp).
>
>     Brian
>
>
> >
> > I welcome any feedback about the proposal.
> >
> > ~Tim
> >
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