Telechat Review of draft-ietf-straw-b2bua-rtcp-15
review-ietf-straw-b2bua-rtcp-15-genart-telechat-housley-2016-12-01-00

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Document: draft-ietf-straw-b2bua-rtcp-15
Reviewer: Russ Housley
Review Date: 2016-11-25
IETF LC End Date: 2016-10-10
IESG Telechat date: 2016-12-01

Summary: Almost Ready


Major Concerns

I wonder if this ought to be a standards-track document.
I recognize that the STRAW WG charter calls for a standards-track
document, but it only contains a handfull of MUST statements that are
not repeats from another RFC.  Maybe this document should become a
Best Current Practice (BCP) instead of a standards-track document.


Minor Concerns

In Section 3.1, it says:

   ...  However, certain SDP attributes may
   lead to call failures when forwarded by a media relay.  Such
   attributes SHOULD NOT be forwarded.  One notable example is the
   'rtcp' [RFC3605] attribute, that UAC may make use of to explicitly
   state the port they're willing to use for RTCP.  ...

This SHOULD NOT statement is vague.  One example of an attribute that
should not be forwarded is given, and the previous sentence provides
some specific attributes that should be forwarded.  While I see why it
is difficult to not be vague, some better advice to the implementer
could be very helpful