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authorLingli Deng <denglingli@chinamobile.com>2017-10-15 09:04:34 +0800
committerLingli Deng <denglingli@chinamobile.com>2017-10-15 09:04:40 +0800
commit67582216e60696ba9d8735fe84039da0e301644d (patch)
tree1cb92cca06617d7fa37ea8a8545610d87d76d544 /docs
parent36c69f5bf81c07a26ba2f57d3cdab8b4989e6bbc (diff)
Adding contents for scope, terms and overview.
Issue-Id: MODELING-28 Change-Id: Ie33afef303a07f1a33b31f14c24928b79407c946 Signed-off-by: Lingli Deng <denglingli@chinamobile.com>
Diffstat (limited to 'docs')
-rw-r--r--docs/ONAP release 1 spec/im/ns-im.rst53
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--- a/docs/ONAP release 1 spec/im/ns-im.rst
+++ b/docs/ONAP release 1 spec/im/ns-im.rst
@@ -5,12 +5,65 @@ ONAP Network Service Descriptor Information Model Specification (Amsterdam)
Scope
-----
+The scope of the present document is to describe the Network Service Descriptor (NSD) Information Model.
+
+
Terms, Definitions and Abbreviations
------------------------------------
+For the purposes of the present document, the following abbreviations apply:
+
++------------+--------------------------------------------+
+|Abbreviation| Definition |
++------------+--------------------------------------------+
+| CM | Conditional Mandatory |
++------------+--------------------------------------------+
+| CO | Conditional Optional |
++------------+--------------------------------------------+
+| CP | Connection Point |
++------------+--------------------------------------------+
+| CPD | Connection Point Description |
++------------+--------------------------------------------+
+| DF | Depoyment Flavour |
++------------+--------------------------------------------+
+| DSL | Domain Specific Language |
++------------+--------------------------------------------+
+| GS | Group Specification |
++------------+--------------------------------------------+
+| MANO | Management and Orchestration |
++------------+--------------------------------------------+
+| MPLS | Multi-Protocol Label Switching |
++------------+--------------------------------------------+
+| NCT | Network Connectivity Topology |
++------------+--------------------------------------------+
+| NFP | Network Forwarding Path |
++------------+--------------------------------------------+
+| NFPD | Network Forwarding Path Descriptor |
++------------+--------------------------------------------+
+| NSD | Network Service Descriptor |
++------------+--------------------------------------------+
+| UML | Unified Modeling Language |
++------------+--------------------------------------------+
+| VL | Virtual Link |
++------------+--------------------------------------------+
+| VLD | Virtual Link Descriptor |
++------------+--------------------------------------------+
+
NSD Infomration Model Overview
------------------------------
+An Network Service (NS), as defined by ETSI NFV ISG is a composition of Network Functions (NF) arranged as a set of functions with unspecified connectivity between them or according to one or more forwarding graphs.
+
+The Network Service Descriptor (NSD) is a deployment template which consists of information used by the NFV Orchestrator (NFVO) for life cycle management of an NS.
+
+As illustrated in the following figure, the description of a NS as used by the NFV Management and Orchestration (MANO) functions to deploy an NS instance includes or references the descriptors of its constituent objects:
+
+* Zero, one or more Virtualized Network Function Descriptors (VNFD);
+* Zero, one or more Physical Network connect PNFs to VLs;
+* Zero, one or more nested NSD;
+* Zero, one or more Virtual Link Descriptor (VLD) used by the NFVO to deploy Virtual Links (VL) ; and
+* Zero, one or more VNF Forwarding Graph Descriptors (VNFFGD).
+
Functional Requirements
-----------------------