Subject: [pcp] Comments on draft-wing-pcp-flowdata-00

From: "Moustafa, Hassnaa" <[email-masked]>
Date: Tue, 21 Jan 2014 21:15:00 +0000

Hi Dan, Reinaldo and Tiru,

To follow up the discussion on  draft-wing-pcp-flowdata-00, I have some questions as follows:

In Section 3.2 (Figure 1 and Figure 2): what does the PCP server represent, is it an edge router in the network? Does it have specific role for QoS management (is there any association with diffserv operation at that node)?

In Section 3.2: the second paragraphs mentions the use of "FlowData option" for flows terminated by the PCP client (when operating s server): this example (when operating as a server) is not clear for me. Is there a concrete service example for that?

In Section 3.4:

-        it is mentioned that the PCP client can use the information in the Flowdata fields in PCP response to influence the traffic it sends and receives: how can the PCP client influence the traffic it receives?

-        An example is also given for Flowdata response indicating how the network can accommodate a flow for a certain downstream bandwidth: is this also valid for upstream case?

In Section 3.6: It  is not clear why the mapping is sent 3 times in Figure 5

In section 7: It is mentioned that the short lived flows will receive no benefit from the flowdata signaling: The reason is not that clear for me especially if the short flows needs certain level of QoE.

Thanks for your feedback on these questions.

Hassnaa