Re: [Softwires] [Fwd: I-D Action:draft-carpenter-softwire-sample-00.txt]

Hi,

There are some concerns after I skimmed over the draft.
How many SIMPLE servers should be deployed in a metro
network? If SIMPLE servers are stateless, would anycast
address be used for avalability and load-balancing?
How does the ISP provision the IP address and port of
SIMPLE servers to the hosts behind the IPv4-only CPEs?
If SIMPLE servers are stateless, I assume the multicast
capability would be absent, right?

Thanks,
washam
----- Original Message -----
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Date: Tuesday, June 8, 2010 0:26 am
Subject: [Softwires] [Fwd: I-D Action:draft-carpenter-softwire-sample-00.txt]
To: softwires@ietf.org

> Hi,
>  
>  This is another approach to stateless tunnels across subscriber NATs.
>  We've posted it in a preliminary form so that people can compare it with
>  the SAM-based proposal presented in Anaheim and with draft-lee-softwire-6rd-udp.
>  
>      Brian + Sheng
>  
>  -------- Original Message --------
>  Subject: I-D Action:draft-carpenter-softwire-sample-00.txt
>  Date: Mon,  7 Jun 2010 00:30:02 -0700 (PDT)
>  From: Internet-Drafts@ietf.org
>  Reply-To: internet-drafts@ietf.org
>  To: i-d-announce@ietf.org
>  
>  A New Internet-Draft is available from the on-line Internet-Drafts directories.
>  
>  	Title           : Legacy NAT Traversal for IPv6: Simple Address 
> Mapping for Premises Legacy Equipment (SAMPLE)
>  	Author(s)       : B. Carpenter, S. Jiang
>  	Filename        : draft-carpenter-softwire-sample-00.txt
>  	Pages           : 9
>  	Date            : 2010-06-07
>  
>  IPv6 deployment is delayed by the existence of millions of subscriber
>  network address translators (NATs) that cannot be upgraded to support
>  IPv6.  This document specifies a mechanism for traversal of such
>  NATs.  It is based on an address mapping and on a mechanism whereby
>  suitably upgraded hosts behind a NAT may obtain IPv6 connectivity via
>  a stateless server, known as a SAMPLE server, operated by their
>  Internet Service Provider.  SAMPLE is an alternative to the Teredo
>  protocol.
>  
>  A URL for this Internet-Draft is:
>  http://www.ietf.org/internet-drafts/draft-carpenter-softwire-sample-00.txt
>  
>  
>  
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