Yes, I think there needs to be a distinction made between:
a) prefix delegation, in which the upstream router gives the prefix to the
downstream node in the expectation that the downstream node will be routing
to nodes downstream from it,
b) prefix assignment, in which the upstream router advertises a prefix in an
RA for the link, assigning the prefix to that link for nodes to use in
address autoconfiguration and for other purposes.
Assigning a unique prefix per mobile node works with either of these, in the
first case, the downstream node is a router, in the second, it may or may
not be a router but it won't route the prefix further since the upstream
router has assigned the prefix to the link between the two.
In sum, as Jari says below, I don't see a need for a new prefix delegation
or assignment mechanism for NETLMM.
jak
----- Original Message -----
From: "Jari Arkko" <[EMAIL PROTECTED]>
To: "Syam Madanapalli" <[EMAIL PROTECTED]>
Cc: "Brian E Carpenter" <[EMAIL PROTECTED]>; "IETF IPv6 Mailing List"
<[email protected]>
Sent: Wednesday, August 23, 2006 5:25 AM
Subject: Re: Prefix Delegation using ICMPv6
Also, the subnet model that NetLMM WG wants to choose is to have
a unique prefix for each MN.
Having a unique prefix for each MN is not the same as a
requirement to perform prefix delegation. Netlmm hosts
are required to work with existing stacks, and I would
generally expect them to use SLAAC or DHCP in the
normal manner. Just that the network advertises a
different prefix for each mobile node, e.g., on the
point to point link that the node is on. Details to
be worked out, this is still work in progress.
I would also expect that Netlmm to not disturb
other functions. So if someone wanted to deploy
a Netlmm network with an additional prefix
delegation via DHCP for mobile routers -- that
should be possible.
In short, I don't think Netlmm can be used as an
argument for a new prefix delegation scheme.
--Jari
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------
