Re: [Softwires] New Version Notification for draft-mdt-softwire-map-translation-00.txt

Leaf yeh <leaf.y.yeh@huawei.com> Fri, 13 January 2012 11:27 UTC

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Date: Fri, 13 Jan 2012 11:26:24 +0000
From: Leaf yeh <leaf.y.yeh@huawei.com>
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Subject: Re: [Softwires] New Version Notification for draft-mdt-softwire-map-translation-00.txt
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Comments and Questions:

1. Section 7.3 - Translating IPv6 Address and Port Number into IPv4 Address and Port Number at the BR

<quote> At the BR, the IPv4 source address MUST be derived from the IPv6 source address (IPv4-translatable address) as per BMR MAP [I-D.mdt-softwire-mapping-address-and-port].

I suppose there is no BMR at BR, BMR sounds MAP-rules at CE, right? If yes, the above 'BMR' should be FMR.


2. Section 7.4 - Translating IPv4 Address and Port Number into IPv6 Address and Port Number at the CE / IPv6 Destination Address and Destination Port Number:

<quote> If matching, the IPv6 destination address (IPv4-converted address) MUST be derived from the IPv4 destination address and the destination port number per FMR.

I guess the above 'IPv4-converted address' might be 'IPv4-translatable' address per the address type and format definition in section 7.1.


3. Section 7.5 - Translating IPv6 Address and Port Number into IPv4 Address and Port Number at the CE / IPv4 Source Address and Source Port Number:

<quote> At the CE, the IPv4 source address MUST be derived from the IPv6 source address (IPv6-converted address) as per FMR or DMR MAP [I-D.mdt-softwire-mapping-address-and-port].

I guess the above text might be 'At the CE, the IPv4 source address MUST be derived from the IPv6 source address (IPv6-converted address) as per DMR MAP or the IPv6 source address (IPv6-translatable address) as per FMR MAP.'


4. Section 7.5 - Translating IPv6 Address and Port Number into IPv4 Address and Port Number at the CE / IPv4 Destination Address and Destination Port Number:

<quote> The source port number MUST be unchanged.

I supposed the above 'source port' should be 'destination port' in the context. And in general speaking, both source port and destination port don't ever change in the MAP-T function of CE & BR, right?


Best Regards,
Leaf


-----Original Message-----
From: Wojciech Dec [mailto:wdec@cisco.com] 
Sent: Tuesday, January 10, 2012 7:14 PM
To: map-dt@external.cisco.com team
Subject: FW: New Version Notification for draft-mdt-softwire-map-translation-00.txt

Hello All,

Here's version 00 of the MAP-T draft. We welcome your feedback:

http://tools.ietf.org/html/draft-mdt-softwire-map-translation-00

A new version of I-D, draft-mdt-softwire-map-translation-00.txt has been
successfully submitted by Wojciech Dec and posted to the IETF repository.

Filename:  draft-mdt-softwire-map-translation
Revision:  00
Title:   MAP Translation (MAP-T) - specification
Creation date:  2012-01-10
WG ID:   Individual Submission
Number of pages: 20

Abstract:
   This document specifies the &quot;Mapping of Address and Port&quot; (MAP)
   double stateless translation based solution (MAP-T) for providing
   IPv4 hosts connectivity to and across an IPv6 domain.


Regards,
Wojciech & Tsetuya