Technical Summary
Packet delay variation metrics appear in many different standards
documents. The metric definition in RFC 3393 has considerable
flexibility, and it allows multiple formulations of delay variation
through the specification of different packet selection functions.
Although flexibility provides wide coverage and room for new ideas,
it can make comparisons of independent implementations more
difficult. Two different formulations of delay variation have come
into wide use in the context of active measurements. This memo
examines a range of circumstances for active measurements of delay
variation and their uses, and recommends which of the two forms is
best matched to particular conditions and tasks.
Working Group Summary
This document was suggested after a talk on this topic at IETF-65.
There was no controversy in the WG process. Consensus was smooth.
Personnel
The document shepherd is Henk Uijterwaal (henk@ripe.net). Lars
Eggert (lars.eggert@nokia.com) has reviewed this document for the IESG.