Content Delivery Network Interconnection Footprint and Capabilities Advertisement Using Application-Layer Traffic Optimization
RFC 9241, “Content Delivery Network Interconnection Footprint and Capabilities Advertisement Using Application-Layer Traffic Optimization”, is a Proposed Standard document published in July 2022 by J. Seedorf, Y. Yang, K. Ma, J. Peterson, J. Zhang. The canonical text is published by the RFC Editor.
Abstract
The Content Delivery Networks Interconnection (CDNI) framework in RFC 6707 defines a set of protocols to interconnect CDNs to achieve multiple goals, including extending the reach of a given CDN. A CDNI Request Routing Footprint & Capabilities Advertisement interface (FCI) is needed to achieve the goals of a CDNI. RFC 8008 defines the FCI semantics and provides guidelines on the FCI protocol, but the exact protocol is not specified. This document defines a new Application-Layer Traffic Optimization (ALTO) service, called "CDNI Advertisement Service", that provides an implementation of the FCI, following the guidelines defined in RFC 8008.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9241 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
- RFC 9240 An Extension for Application-Layer Traffic Optimization : Entity Property Maps
- RFC 9242 Intermediate Exchange in the Internet Key Exchange Protocol Version 2
- RFC 9239 Updates to ECMAScript Media Types
- RFC 9243 A YANG Data Model for DHCPv6 Configuration
- RFC 9238 Loading Manufacturer Usage Description URLs from QR Codes
- RFC 9244 Distributed Denial-of-Service Open Threat Signaling Telemetry
- RFC 9237 An Authorization Information Format for Authentication and Authorization for Constrained Environments
- RFC 9245 IETF Discussion List Charter