Subject: [CDNi] My notes from today's CDNI Side Meeting Footprint/Capabilities at IETF85

From: Jan Seedorf <[email-masked]>
Date: Tue, 6 Nov 2012 22:50:28 +0000

CDNI Side Meeting Footprint/Capabilities at IETF85 - 20121106
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-- what capabilities are mandatory and how could we call those with respect to terminology?
-- agreement that "delivery protocol" is mandatory; Francois: how fine grained?; Emil: smooth streaming etc. should be sub-field under general field "http" etc.; Rob: how to avoid enumeration of all types of http delivery;
-- agreement that we do not want to enumerate detailed delivery protocols; agreement to have a registry for "delivery protocol" where the registry and how to fill the registry would be defined by CDNI documents
-- single-level registry is probably what we want to have (i.e. on a general protocol level such as "http", without going into flavors of http)
-- Kevin: there are use cases were acquisition protocol is needed to know; live streaming is interesting use case regarding supported acquisition protocol
-- acquisition protocol may be dependent on delivery protocol, but let's discuss dependencies among capabilities later
-- probably the same registry can be used for delivery protocol and acquisition protocol
-- redirection mode needs to be supported, possibly a stricter registry is needed for this
-- capabilities needed for logging will be needed, but not yet clear
-- capabilities needed with respect to metadata; for some metadata actual supported values need to be advertised as capabilities
-- need to align the work between metadata / logging / request routing interfaces with respect to capabilities advertisement
-- capability interface needs to be extensible (e.g. to allow for metadata that might be added later)
-- cascading / matrix of different capabilities in combination is still to be discussed (e.g. certain acquisition protocols are only supported for certain delivery protocols)
-- URI signing still to be discussed regarding capabilities advertisement of detailed features / methods
-- Francois: what about versioning (e.g. metadata v.1 vs. metadata v.2)? Do we need to advertise that?

 - Jan

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Jan Seedorf
Senior Researcher
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