Dear OGF community, Two new documents have been published by OGF. All OGF documents (including any that are open for public comment) may be found here: www.ogf.org/ogf/doku.php/documents/documents These documents were provided by the NSI Working Group: *GWD-R-P.237: NSI Connection Service v2.1* Authors: Guy Roberts, GÉANT; John MacAuley, ESnet; Tomohiro Kudoh, University of Tokyo; Chin Guok, ESnet Abstract: This document describes the Connection Service v2.1, which is one of a suite of services that make up the Network Service Interface (NSI). The NSI is a web-service based protocol that operates between a requester software agent and a provider software agent. The full suite of NSI services allows an application or network provider to request and manage circuit service instances. Apart from the Connection Service, this includes the Document Distribution Service, which allows NSI documents such as the NSI Topology and the NSA Description to be shared among participating NSI agents. The complete set of NSI services is described in the Network Services Framework v2.0. This Connection Service document describes the protocol, state machine, architecture and associated processes and environment in which software agents interact to deliver a Connection. A Connection is a point-to-point network circuit that can transit multiple networks belonging to different providers. *GWD-I.238: NSI Connection Service v2.0 to v2.1 Delta* Author: Guy Roberts, GÉANT Abstract: This document is an informational guide to the differences between the NSI Connection Service version 2.0 and version 2.1. - Greg Newby, OGF Standards Editor -- Gregory Newby Ph.D. Chief Technology Officer / Chef de la Technologie gbnewby@computecanada.ca / (o) 416-228-1234 (f) 416-907-1555 (c) 613-334-8373 155 University Avenue, Suite 302, Toronto, Ontario, Canada M5H 3B7 www.computecanada.ca / www.calculcanada.ca / @ComputeCanada