Hi Washam,
Thanks for your comments, see in line. These are my comments;
Sheng may want to comment too.
On 2010-06-08 20:30, WashamFan wrote:
> Hi,
>
> There are some concerns after I skimmed over the draft.
> How many SIMPLE servers should be deployed in a metro
> network?
Well, that (IMHO) would depend entirely on the load so I think
it is an engineering question. Since /64 prefixes are abundant,
it would be trivial to have as many SAMPLE servers as you
need for the load.
> If SIMPLE servers are stateless, would anycast
> address be used for avalability and load-balancing?
Personally, I think that is complication with no value.
If the SIMPLE server is colocated with another single point
of failure such as the first hop router for a large group
of subscribers, I don't see why you would worry about
load balancing and availability.
> How does the ISP provision the IP address and port of
> SIMPLE servers to the hosts behind the IPv4-only CPEs?
That doesn't change; they are still provisioned for IPv4
exactly as they are today. The IPv4 service is not changed
in any way.
> If SIMPLE servers are stateless, I assume the multicast
> capability would be absent, right?
As described so far, SIMPLE is just the same as Teredo and
6to4 as far as multicast goes.
Regards,
Brian
>
> Thanks,
> washam
> ----- Original Message -----
> From: Brian E Carpenter <[email protected]>
> Date: Tuesday, June 8, 2010 0:26 am
> Subject: [Softwires] [Fwd: I-D Action:draft-carpenter-softwire-sample-00.txt]
> To: [email protected]
>
>
>> 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: [email protected]
>> Reply-To: [email protected]
>> To: [email protected]
>>
>> 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
>>
>>
>>
>> _______________________________________________
>> Softwires mailing list
>> [email protected]
>> https://www.ietf.org/mailman/listinfo/softwires
>>
>
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