YD/T 4635-2023
NFV and SDN collaborative management and orchestration interface requirements for telecom cloud resource pool scenarios (English Version)

Standard No.

YD/T 4635-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 4635-2023

Introduction

Analysis of Standard Technology Framework

Interface Type	Core Function	SDN Enhanced Features	Typical Application Scenarios
Or-Vnfm	VNF Lifecycle Management	New External_network Parameter	Network Service Instantiation
Or-Vi	SDN Configuration Management	Support BGP/Exroute/TapFlow	Active-Active Gateway Deployment

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Key Technology Implementation

1. Enhanced VNF Lifecycle Management

Added the External_network parameter group in the InstantiateVnf interface, including:

• cpd_name: connection point name
• network_id/type: network identifier and type
• segment_id/subnets: segment and subnet information

Application Case: 5G Core Network Deployment

When AMF+SMF network elements are networked, the External_network parameter is used to achieve the following:
1. Automatically associate vRouter return routes
2. Dynamically configure BGP neighbor relationships

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2. SDN Advanced Network Functions

2.1 Traffic Mirroring (TapFlow)

Implemented through the TapService/TapFlow interface:

1. Distributed gateway traffic collection
2. Dynamic delivery of mirroring policies (supports SDN gateways/collection devices)
3. Signaling analysis scenario bandwidth savings of 30%

2.2 BGP Neighbor Management

Parameters	Requirements
source_ips	Active-active gateways must be configured with different source IPs
suppress	Route suppression is enabled by default

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Implementation Suggestions

1. Key points for development and verification

• The VNFD template must contain the SDN network descriptor
• Or-Vi interface needs to implement automatic BFD session association
• Mirroring policy needs to support batch operation (≥100 records/second)

2. O&M best practices

1. Establish VPCConnection whitelist mechanism
2. Regularly check BGP neighbor status consistency
3. Enable TapFlow traffic sampling mode

YD/T 4635-2023 history

• 2023 YD/T 4635-2023 NFV and SDN collaborative management and orchestration interface requirements for telecom cloud resource pool scenarios

Standard and Specification