CDNI J. Seedorf
Internet-Draft NEC
Intended status: Informational J. Peterson
Expires: August 29, 2013 Neustar
S. Previdi
Cisco
R. van Brandenburg
TNO
K. Ma
Azuki Systems, Inc.
February 25, 2013
CDNI Request Routing: Footprint and Capabilities Semantics
draft-spp-cdni-rr-foot-cap-semantics-04
Abstract
This document tries to capture the semantics of the "Footprint and
Capabilities Advertisement" part of the CDNI Request Routing
interface, i.e. the desired meaning and what "Footprint and
Capabilities Advertisement" is expected to offer within CDNI. The
discussion in this document has the goal to facilitate the choosing
of one or more suitable protocols for "Footprint and Capabilities
Advertisement" within CDNI Request Routing.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 29, 2013.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
Seedorf, et al. Expires August 29, 2013 [Page 1]
Internet-Draft CDNI RR Footprint/Capabilities Semantics February 2013
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction and scope . . . . . . . . . . . . . . . . . . . . 3
2. CDNI FCI in existing CDNI Documents . . . . . . . . . . . . . 4
3. Design Decisions for Footprint and Capabilities . . . . . . . 7
3.1. Advertising Limited Coverage . . . . . . . . . . . . . . . 7
3.2. Capabilities and Dynamic Data . . . . . . . . . . . . . . 8
3.3. Advertisement versus Queries . . . . . . . . . . . . . . . 9
3.4. Avoiding or Handling 'cheating' dCDNs . . . . . . . . . . 9
3.5. Focus on Main Use Cases may Simplify Things . . . . . . . 10
4. Main Use Case to foster the Clarification of Semantics . . . . 11
5. Towards Semantics for Footprint Advertisement . . . . . . . . 12
6. Towards Semantics for Capabilities Advertisement . . . . . . . 14
7. Open Issues and Questions . . . . . . . . . . . . . . . . . . 17
8. Security Considerations . . . . . . . . . . . . . . . . . . . 18
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.1. Normative References . . . . . . . . . . . . . . . . . . . 19
9.2. Informative References . . . . . . . . . . . . . . . . . . 19
Appendix A. Acknowledgment . . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 21
Seedorf, et al. Expires August 29, 2013 [Page 2]
Internet-Draft CDNI RR Footprint/Capabilities Semantics February 2013
1. Introduction and scope
The CDNI working group is working on a set of protocols to enable the
interconnection of multiple CDNs to a CDN federation. This CDN-
federation should serve multiple purposes, as discussed in [RFC6770],
for instance, to extend the reach of a given CDN to areas in the
datatracker.ietf.org