Document: draft-ietf-avt-trtcp-07
Reviewer: Brian Carpenter
Date: April 26, 2004

   o draft-ietf-avt-tcrtp-07.txt
     Tunneling multiplexed Compressed RTP ('TCRTP') (BCP)

This seems mainly OK, but...

> 2.4.2. Tunneling and DiffServ 
>    
>   RTP streams may be marked with Expedited Forwarding (EF) bits, as 
>   described in [EF-PHB].  When such a packet is tunneled, the tunnel 
>   header must also be marked for the same EF bits, as required by [EF-
>   PHB].  It is important to not mix EF and non-EF traffic in the same 
>   EF-marked multiplexed tunnel. 

Two problems in this. Firstly, the RFC cited is 2598, but that was
obsoleted by 3246. Secondly, 3246 has a normative "SHOULD" where the above
paragraph has a lower-case "must." If the present draft wants to strengthen
the requirement, it should use a normative "MUST" and cite RFC 2119.

There is heavy normative dependency on the following expired reference:

>   [RFCXXXX] T. Koren, S. Casner, J. Geevarghese, B. Thompson, P. Ruddy, 
>        "Compressing IP/UDP/RTP headers on links with high delay, packet 
>        loss, and reordering", draft-ietf-avt-crtp-enhance-05.txt, 
>        November 2002. 

With a bit of hard work I discovered that this ended life as -07
and is now RFC 3545, but I really think draft authors should deal with
these things before sending a draft to the IESG.

I hope these two pieces of carelessness are not statistically significant
for the document as a whole.