Re: [homenet] dst/src routing drafts (for IETF-91 rtgwg)

"Fred Baker (fred)" <fred@cisco.com> Wed, 22 October 2014 20:16 UTC

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From: "Fred Baker (fred)" <fred@cisco.com>
To: David Lamparter <equinox@diac24.net>
Thread-Topic: dst/src routing drafts (for IETF-91 rtgwg)
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Date: Wed, 22 Oct 2014 20:16:29 +0000
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Cc: "homenet@ietf.org" <homenet@ietf.org>, Mikael Abrahamsson <swmike@swm.pp.se>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Subject: Re: [homenet] dst/src routing drafts (for IETF-91 rtgwg)
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On Oct 22, 2014, at 12:06 PM, David Lamparter <equinox@diac24.net> wrote:

> On Mon, Oct 20, 2014 at 10:40:33PM +0200, David Lamparter wrote:
>> https://datatracker.ietf.org/doc/draft-lamparter-rtgwg-routing-extra-qualifiers/?include_text=1
>> https://datatracker.ietf.org/doc/draft-lamparter-rtgwg-dst-src-routing/?include_text=1

Speaking strictly for myself, I’m not sure why homenet is relevant. The technology is related to networks that have different routing depend on on one’s use case. A class of solutions for it has been called the “fish” problem, and built using multi-topology routing. In homenet, it’s called SADR, and is primarily about egress routing (routing to an egress to an upstream ISP that gave you a PA prefix). While one doesn’t really want to confuse theory with practice, in theory it could be used between points of a network, to prevent folks using one set of prefixes to talk with another set, or to force routing of some sessions in some ways.

Personally, those are a class of problems I associate with campus networks more than residential networks.