Subject: [ippm] OWAMP draft - draft*ietf-ippm-owdp-14.txt

From: "sharee mcnab" <[email-masked]>
Date: Tue, 25 Oct 2005 10:37:14 +1300

Hello,
At ATR, we've been looking into OWAMP (as well as TWAMP) and had the following questions.  Perhaps the authors or others could answer these questions?

A.  Page 5.  Section 2, paragraph 2.  States OWAMP-control messages use a "Well-known port number" (ie 0-1023).  Is it planned to designate & register a defined OWAMP port number for OWAMP-control messages?

B.  Page 14. Section 3.5 Generally Server-> Sender/Receiver interactions for setting up tests and retrieving test data are undefined for the more general architecture where the various modules are on separate hosts.  This obviously impacts interoperability in the more general architecture.  Is it be worth extending the standard to include these interactions or alternatively defining the standard to limited architectures, maybe with an extension for the more general case?

C.  Section 3.5, second to last paragraph.  Setting the Conf-Sender and Conf-Receiver seems inconsequential when it is the Control-Client speaking to the Server.  Surely this is only of importance when the Server is speaking to the Sender/Receiver.  Also, what is to stop the sender & receiver checking the sender/ receiver address field to determine if they are the receiver or sender?

D.  The OWAMP draft has a strong emphasis on security and encryption.  It is not clear to me though that there are enough implementation details in the draft to enable interoperability with regards to security keys?  Is this the intention or is it planned to have limited interoperability in authenticated and encrypted modes?

Thanks again

Sharee McNab
Nick Kinraid

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