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Re: shim6 proxies
I read your draft and found it insightful. I had a couple of
questions as below:
- I am not sure if I understand the definition of CMULA and its
expected role in P-shim6, so please help me clarify. According to
draft-ietf-ipv6-ula-contral-01.txt, CMULAs are not expected to be
routable globally. However, reading the P-shim6 draft, I assume
that CMULA need to be globally routable addresses.
And if there is any problem with assigning more than one CMULA
blocks to a multihomed site?
- In Section 5, it is mentioned that P-shim6 box virtually assigns
PA address for each host and uses it as locator for each
multiplexing/demultiplexing for the proxy-shimmed flow.
But wouldn't it be possible for the P-shim6 box to use a PA
address as a common locator for multiple clients? I would
think that proxy-shimmed payload traffic can be normally
demultiplexed to CMULA on the receiver. Sharing common locator
may help to reduce costs of REAP failure detection.
I missing something?
- The draft says that P-shim6 box should be the DNS server for
the hosts, providing DNS relay in a specific manner; inducing
the host to access to its peer with ULID. But I am wondering
if such role can be played by other DNS server (!= P-shim box)
as well. Is there any reason why P-shim6 box should be involved
in address resolution requested by host?
On Wed, 28 Feb 2007 12:46:36 +0100
marcelo bagnulo braun <firstname.lastname@example.org> wrote:
> i have included in this draft some level of detail on how to do proxies
> in shim6, in order to support unmodified hosts, allow some middle boxes
> to perform egress path selection and provide PI identifiers, so that we
> can have an idea of how this would look like in the shim approach
> Comments are welcome
> Regards, marcelo
> Inicio mensaje reenviado:
> > De: Internet-Drafts@ietf.org
> > Fecha: 27 de febrero de 2007 21:50:02 GMT+01:00
> > Para: email@example.com
> > Cc: Asunto: I-D ACTION:draft-bagnulo-pshim6-00.txt
> > Responder a: firstname.lastname@example.org
> > A New Internet-Draft is available from the on-line Internet-Drafts
> > directories.
> > Title : Proxy Shim6 (P-Shim6)
> > Author(s) : M. Bagnulo
> > Filename : draft-bagnulo-pshim6-00.txt
> > Pages : 22
> > Date : 2007-2-27
> > This draft discusses extensions to the shim6 architecture to support
> > shim6 proxies that would allow the provision of the following
> > capabilities:
> > o Provide Upper Layer Identifier portability.
> > o Provide Traffic Engineering policy enforcement.
> > o Off-load of the shim6 context management from the actual peers of
> > the communication.
> > A URL for this Internet-Draft is:
> > http://www.ietf.org/internet-drafts/draft-bagnulo-pshim6-00.txt
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