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[STDS-802-16] DSCP Mask and Range??????

 

 

From: Feder, Peretz (Peretz)
Sent: Wednesday, October 08, 2008 4:43 PM
To: STDS-802-16@LISTSERV.IEEE.ORG
Subject: RE: [STDS-802-16] status of three drafts towards Sponsor Ballot

 

 

Dear IEEE 802.16 Colleagues,

 

Section 11.13.18.3.3.2 Type of Service/DSCP (differentiated services codepoint)Range and Mask field talks about ip-tos mask.

 

What it the idea behind the use of DSCP range and tos mask as described in that section?

 

These terms are not mentioned in RFC 2474.

 

In RFC2457 DiffServ, RFC2597 and RFC3246 AF and EF classes are defined and they all refer to discrete values for DiffServ, no mention of mask or a range.

 

The IANA registry for these DSCP values is not contiguous, how can a range or a mask be applied.

 

http://www.iana.org/assignments/dscp-registry/dscp-registry.xhtml

 

Whoever brought this text in, can you provide the logic behind this section please?

 

Thanks in advance, Peretz Feder