Re: [CDNi] Opsdir last call review of draft-ietf-cdni-request-routing-extensions-05

[Ori Finkelman <[e-mail]>]

Hi,
Thanks a lot for your time and for the comments.
I will fix them for the next revision.

Best regards,
Ori

On Tue, Aug 20, 2019, 10:02 Zitao Wang via Datatracker <[e-mail]>
wrote:

> Reviewer: Zitao Wang
> Review result: Has Issues
>
> I have reviewed this document as part of the Operational directorate’s
> ongoing
> effort to review all IETF documents being processed by the IESG.  These
> comments were written with the intent of improving the operational aspects
> of
> the IETF drafts. Comments that are not addressed in last call may be
> included
> in AD reviews during the IESG review.  Document editors and WG chairs
> should
> treat these comments just like any other last call comments.
>
> Summary:
> The Open Caching working group of the Streaming Video Alliance is focused
> on
> the delegation of video delivery requests from commercial CDNs to a caching
> layer at the ISP.  In that aspect, Open Caching is a specific use case of
> CDNI,
> where the commercial CDN is the upstream CDN (uCDN) and the ISP caching
> layer
> is the downstream CDN (dCDN). The extensions specified in this document to
> the
> CDNI Metadata and FCI interfaces are derived from requirements raised by
> Open
> Caching but are applicable to CDNI use cases in general.
>
> The document is well written, easy to read, and technically I have no
> issues.
> However, as shown below, I do have some questions for clarifications.
>
> Major issues: None
>
> Minor issues:
> #1: There are a lot of abbreviations that are not provided with
> explanations or
> citations, such as uCDN, dCDN, CFI, etc.
>
> #2: The example of of a Redirect Target capability object serialization,
> is it
> encoded as json? Please present its encoding format.
>
> #3: In section 2.1, the "Mandatory-to-Specify" attributes of dns-target and
> http-target, it describes that "No, but at least one of dns-target or
> http-target MUST be present and non-empty." I wonder whether there should
> be a
> detection mechanism. For example, if the requirements are not met, an error
> message will be returned. And if there are existing mechanisms, please
> briefly
> introduce them.
>
> Best Regards!
> -Michael
>
>