#T-NOVA Descriptor Repository ##Introduction This repository contains the templates and example descriptors used in Project T-NOVA. The current folder structure contains:

• ETSI defined descriptors (etsi_<descriptor_name>)
• T-NOVA defined descriptors (t-nova_<descriptor_name>)
• Example descriptors for a Network Service containing a single VNF comprised of 2 VNFCs. (example_<descriptor_name>)
• T-NOVA VNFs descriptor files (<vnf_name>_<descriptor_name>)

##Descriptors ###ETSI Descriptors Current ETSI ISG NFV proposal as laid out in ETSI GS NFV-MAN 001 v 1.1.1

As suggested by ETSI documentation the relation model for a VNFD is illustrated in the following

###T-NOVA Descriptors Project related sections have been added in order to acommodate its developements and requirements. Notably you may find additional sections for the Marketplace, Monitoring, EPA and VNF configuration.

###Example Descriptors

####Introduction This set of descriptors serve as an example for the definition of the appropriate VNFD and NSD required for the composotion of a NS comprised by a single dataplane VNF in this case a Virtual Traffic Classifier VNF. The basic functionality of the VNF is to accept incoming packets (data-in) analyse heade and payload information and forward the traffic (data-out) after the appropriate marking/prioritisation policies have been places on the packets categorised under certain service/application categories.

The VNFD and NSD are based on the .

####Definitions

In order to simplify the model it is assumed that each VDU contains only one VNFC.

####VNF Architecture

1. Data In interface
2. Data Out Interface
3. VNFC1 - VNFC2 interconnection
4. Public IP for the VNFC1 (management)
5. at least 1 Core per VNFC and 2G RAM
6. 4 vNICs per VNFC

Simple implementation of the integrated monitoring deamon as proposed

• VNFC1 IP address using dhcp

####Deployment Model
####Assumptions

1. NS comprises a single VNF
2. A vdu comprises of a single VNFC
3. The network model for VNF deployment assumes the creation of 4 tenant networks namely:
   • Management: used for internal management communication and signaling
   • Monitoring: used for the monitoring agent communications with the VNFC
   • Storage: used for connecting VNFC to persistent or non-persistent storage
   • Datapath: used for the data that traverse the VNFC

For T-NOVA four VNFs are currently anticipated

• Virtual Traffic Classifier (vTC)
• Virtual Security Appliance (vSA)
• Virtual Session Border Controller (vSBC)
• Virtual Home Gateway (vHG)

Some preliminary examples have been included under the 'HEAT' directory in the repository.

##References

1. Terminology for Main Concepts in NFV - ETSI GS NFV 003 V1.2.1 (2014-12)
2. Management and Orchestration - ETSI GS NFV-MAN 001 V1.1.1 (2014-12)
3. Virtual Network Functions Architecture - ETSI GS NFV-SWA 001 V1.1.1 (2014-12)