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Re: New Version Notification for draft-dykim-6man-sid6-00.txt

DY Kim <dykim6@gmail.com> Wed, 05 September 2018 00:25 UTC

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Subject: Re: New Version Notification for draft-dykim-6man-sid6-00.txt
From: DY Kim <dykim6@gmail.com>
In-Reply-To: <6D793393-97D0-43ED-8DDF-55DDFB0811B8@employees.org>
Date: Wed, 05 Sep 2018 09:24:55 +0900
Cc: 6man <6man@ietf.org>
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References: <153596076430.13392.12146482689462618493.idtracker@ietfa.amsl.com> <74D69781-F02E-4FA1-9FD4-E4597833EA8F@gmail.com> <6D793393-97D0-43ED-8DDF-55DDFB0811B8@employees.org>
To: Ole Troan <otroan@employees.org>
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---
DY

> On 4 Sep 2018, at 05:45, Ole Troan <otroan@employees.org> wrote:
> 
> From a quick glance it looks like you have re-invented multilink subnet routing.
> Which of one flavous is described in https://tools.ietf.org/html/draft-ietf-ipv6-multilink-subnets-00

On my second thought, I’m not sure whether SID6 is a kind of multi-link subnet, although it might be that the two attempt to achieve similar things.

In SID6, each link bordered by a router is seen as a subnet which, however, is not identified by the Subnet Prefix but by the NID(node ID), i.e., the IP address of the router. In this view, each subnet consists of a single link. If a link is bordered by more than one routers, the link belongs to more than one subnets of which each is identified by a different NID of the associated router.

Sharing /64 across multiple links might be the same for the two. However, if we utilize the subnet prefix (64 - site prefix) for Unique IPv6 Prefix for Host (Sec. 3.6 of SID6), we’re effectively sharing the site prefix across all intra-site nodes.

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