Last Call Review of draft-ietf-fecframe-pseudo-cdp-
review-ietf-fecframe-pseudo-cdp-secdir-lc-wierenga-2012-10-04-00

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.

This draft describes how Forward Error Correction (FEC) Framework and the
Session Description Protocol (SDP) elements can be combined to defined a pseudo
Content Delivery Protocol (CDP) to protect multiple source flows with one or
more repair flows.

The draft is concise and well written, minor nits:

** the code below figure 5:
        v=0
        o=ali 1122334455 1122334466 IN IP4 fec.example.com
        s=FEC Framework Examples
        t=0 0
        ….

comes out of thin air, is it supposed to be part of Figure 5 (in that case the
caption is at the wrong position)? Some explanation/introduction is useful.

*** 4.  Reconstruction of Source Flows from Repair Flow(s)
*** 4.1.  Example: Multiple Source Flows Protected by a Single Repair Flow

I think for consistency with 3 and 3.1 you should have text in 4

*** Security considerations

I agree with the author that no additional security implications are introduced

Cheers,

Klaas