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Last Call Review of draft-ietf-xrblock-rtcp-xr-burst-gap-loss-08
review-ietf-xrblock-rtcp-xr-burst-gap-loss-08-secdir-lc-lonvick-2013-03-21-00

Request Review of draft-ietf-xrblock-rtcp-xr-burst-gap-loss
Requested revision No specific revision (document currently at 12)
Type Last Call Review
Team Security Area Directorate (secdir)
Deadline 2013-03-15
Requested 2013-03-07
Authors Alan Clark , Sunshine Zhang , Jing Zhao , Qin Wu
I-D last updated 2013-03-21
Completed reviews Secdir Last Call review of -08 by Chris M. Lonvick (diff)
Assignment Reviewer Chris M. Lonvick
State Completed
Request Last Call review on draft-ietf-xrblock-rtcp-xr-burst-gap-loss by Security Area Directorate Assigned
Reviewed revision 08 (document currently at 12)
Result Has nits
Completed 2013-03-21
review-ietf-xrblock-rtcp-xr-burst-gap-loss-08-secdir-lc-lonvick-2013-03-21-00
Hi,

I have reviewed this document as part of the security directorate's
ongoing effort to review all IETF documents being processed by the
IESG.  These comments were written primarily for the benefit of the
security area directors.  Document editors and WG chairs should treat
these comments just like any other last call comments.



I don't see any problems with this.  The only nit that I found was that I 


couldn't fully understand a part of section 3.2.




  Loss and Discard Combination flag (C): 1 bit

      The 'C' flag is used to indicate whether combining loss/discard
      report is needed.  This field MUST be set to '1' if the burst gap
      loss report is present in conjunction with the burst gap discard
      report in the same compound RTCP packet and MUST be set to '0'
      otherwise.  If the burst gap discard is not sent with the burst
      gap loss, then the receiver MUST discard the burst gap loss with
      'C' flag set to 1.  If the 'C' flag is set to 0, then receiver
      MUST NOT discard the burst gap loss Metrics Block when the burst
      gap discard is not received.

Maybe something like the following:



The 'C' flag is used to indicate whether the loss/discard report is 


combined with the burst gap loss report in the same compound RTCP packet. 


The value MUST be set to '1' if the loss/discard report and the burst gap 


loss report are combined.  Otherwise, the value MUST be set to '0'.  If 


the burst gap discard is not sent with the burst gap loss, then the 


receiver MUST discard the burst gap loss with 'C' flag set to 1.  If the 


'C' flag is set to 0, then receiver MUST NOT discard the burst gap loss 


Metrics Block when the burst gap discard is not received.





Best regards,
Chris