The IESG has approved publication of 'Mapping of Media Streams to
Resource Reservation Flows' <draft-ietf-mmusic-reservation-flows-01.txt>
as a Proposed Standard.
This document is the product of the Multiparty Multimedia Session
Control Working Group.
The IESG contact persons are Scott Bradner and Allison Mankin.
Technical Summary
This document defines the Session Description Protocol (RFC 2327,
RFC2327bis) syntax needed to express how a set of different media
streams need to be mapped into reservation flows. For this purpose,
it defines an attribute called SRF (Single Reservation Flow) allowing
generalized grouping of media for mapping for QoS from the SDP.
Working Group Summary
The working group made a design modification in the original proposal
to make it stronger, but then it had strong consensus that it was
useful and fit the design goals for SDP.
Protocol Quality
The specification was reviewed for the IESG by Allison Mankin and
Colin Perkins.
RFC Editor, replace the last line of the following paragraph with
the sentences that follow the paragraph.
6 Security Considerations
An attacker adding group lines using the SRF semantics to an SDP
session description could force a user agent to establish a larger or
a smaller number of resource reservation flows than needed. This
could consume extra resources in the end-point or degrade the quality
of service for a particular session. It is thus RECOMMENDED that some
^
kind of integrity protection is applied to SDP session descriptions.
Replacement:
It is thus STRONGLY RECOMMENDED that integrity protection be applied
to the SDP session descriptions. This is likely to be S/MIME over
the SIP message carrying the SDP as a body (RFC 3261). Other applications
MAY use a different form of integrity protection.
