Subject: Re: [lmap] comments on lmap-requirements - controller to measurement point

From: Henning Schulzrinne <[email-masked]>
Date: Mon, 5 Nov 2012 01:40:22 +0000

Second, is there a reason that direct connections from a measurement controller to a measurement point are not supported? This argument that this reduces DoS potential is not convincing, given that the direction of connection initiation and the final decision to authorize and initiate a measurement need not be dependent. What it does do is keep a measurement controller from being able to do iterative measurement: i.e., using the results of a prior measurement to direct the parameters of a subsequent measurement, as would be useful when trying to isolate an intermittent connection failure in the user diagnostics use case.

Good point. My other concern were NAT issues - for agents in home network devices, reaching them from the outside is likely to be challenging, but this doesn't apply to (cable|DSL) modems and may be easier in the case of IPv6 networks.

Brian