Re: [mpls] [Editorial Errata Reported] RFC3270 (1910)

[Francois Le Faucheur <flefauch at cisco.com>]

Hello,

Just looked back at RFC3270:
MAPnb defines the number of MAP entries carried inside the DIFFSERV  
object.
Each MAP entry defines the mapping between one EXP (now "COS") field  
value and one PHB.
Since there is only 8 possible EXP values, I think:
	* MAPnb should actually be encoded over 3 bits, and not 4 bits
	* value range should be 0-7.
Does that sound right?

If yes, I can update the errata with appropraite required changes.

Francois

On 14 Oct 2009, at 03:34, fanshaojun wrote:

> Dear ALL:
>
> This MAPnb column occupied 4 bits in the object. So it can be set to  
> any
> value from 0 to 15.
>
> Corrected Text will be
> --------------
> MAPnb : 4 bits
>         Indicates the number of MAP entries included in the DIFFSERV
>         Object.  This can be set to any value from 0 to 15.
>
>
> -----Original Message-----
> From: RFC Errata System [mailto:rfc-editor at rfc-editor.org]
> Sent: Tuesday, October 13, 2009 3:31 PM
> To: flefauch at cisco.com; liwwu at cisco.com; bsd at cisco.com; davari at ieee.org 
> ;
> pasi.vaananen at nokia.com; ram at axiowave.com; pierrick.cheval at space.alcatel.fr 
> ;
> jh at song.fi; rcallon at juniper.net; adrian.farrel at huawei.com;
> swallow at cisco.com; loa at pi.nu
> Cc: mpls at ietf.org; flefauch at cisco.com; rfc-editor at rfc-editor.org
> Subject: [mpls] [Editorial Errata Reported] RFC3270 (1910)
>
>
> The following errata report has been submitted for RFC3270,
> "Multi-Protocol Label Switching (MPLS) Support of Differentiated  
> Services".
>
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=3270&eid=1910
>
> --------------------------------------
> Type: Editorial
> Reported by: Francois Le Faucheur <flefauch at cisco.com>
>
> Section: 5.2.1
>
> Original Text
> -------------
> MAPnb : 4 bits
>         Indicates the number of MAP entries included in the DIFFSERV
>         Object.  This can be set to any value from 0 to 8.
>
> Corrected Text
> --------------
> MAPnb : 4 bits
>         Indicates the number of MAP entries included in the DIFFSERV
>         Object.  This can be set to any value from 0 to 7.
>
> Notes
> -----
> This errata was reported by Colors Springfield <springfieldcolors at gmail.com 
> >
> on 13 October 2009.
>
> Instructions:
> -------------
> This errata is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party (IESG)
> can log in to change the status and edit the report, if necessary.
>
> --------------------------------------
> RFC3270 (draft-ietf-mpls-diff-ext-09)
> --------------------------------------
> Title               : Multi-Protocol Label Switching (MPLS) Support of
> Differentiated Services
> Publication Date    : May 2002
> Author(s)           : F. Le Faucheur, L. Wu, B. Davie, S. Davari, P.
> Vaananen, R. Krishnan, P. Cheval, J. Heinanen
> Category            : PROPOSED STANDARD
> Source              : Multiprotocol Label Switching
> Area                : Routing
> Stream              : IETF
> Verifying Party     : IESG
>
>
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