A new Request for Comments is now available in online RFC libraries. RFC 7390 Title: Group Communication for the Constrained Application Protocol (CoAP) Author: A. Rahman, Ed., E. Dijk, Ed. Status: Experimental Stream: IETF Date: October 2014 Mailbox: Akbar.Rahman@InterDigital.com, esko.dijk@philips.com Pages: 46 Characters: 106675 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-core-groupcomm-25.txt URL: https://www.rfc-editor.org/rfc/rfc7390.txt The Constrained Application Protocol (CoAP) is a specialized web transfer protocol for constrained devices and constrained networks. It is anticipated that constrained devices will often naturally operate in groups (e.g., in a building automation scenario, all lights in a given room may need to be switched on/off as a group). This specification defines how CoAP should be used in a group communication context. An approach for using CoAP on top of IP multicast is detailed based on existing CoAP functionality as well as new features introduced in this specification. Also, various use cases and corresponding protocol flows are provided to illustrate important concepts. Finally, guidance is provided for deployment in various network topologies. This document is a product of the Constrained RESTful Environments Working Group of the IETF. EXPERIMENTAL: This memo defines an Experimental Protocol for the Internet community. It does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/rfc.html Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC