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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+Definitions
+-----------
+
+Definitions of most terms used here are provided in the `IETF SFC Architecture RFC <https://datatracker.ietf.org/doc/rfc7665/>`_.
+Additional terms specific to the OPNFV SFC project are defined below.
+
+
+Abbreviations
+-------------
+
+.. list-table:: Abbreviations
+   :widths: 15 85
+   :header-rows: 1
+
+   * - Abbreviation
+     - Term
+
+   * - NS
+     - Network Service
+
+   * - NFVO
+     - Network Function Virtualization Orchestrator
+
+   * - NF
+     - Network Function
+
+   * - NSH
+     - Network Services Header (Service chaining encapsulation)
+
+   * - ODL
+     - OpenDaylight SDN Controller
+
+   * - RSP
+     - Rendered Service Path
+
+   * - SDN
+     - Software Defined Networking
+
+   * - SF
+     - Service Function
+
+   * - SFC
+     - Service Function Chain(ing)
+
+   * - SFF
+     - Service Function Forwarder
+
+   * - SFP
+     - Service Function Path
+
+   * - VNF
+     - Virtual Network Function
+
+   * - VNFM
+     - Virtual Network Function Manager
+
+   * - VNF-FG
+     - Virtual Network Function Forwarding Graph
+
+   * - VIM
+     - Virtual Infrastructure Manager