NFV Release3 standard is refined, from NFV to 5G commercial use

Standards are an important technical support for industrial development. ETSI NFV ISG (Industry Specification Group), established in November 2012, is responsible for network function virtualization related standards. The NFV organization includes 6 working groups, IFA, SOL, EVE, TST, REL, and SEC. Since its establishment, it has published more than 100 documents, with more than 300 members and 38 operators including China Mobile.

Standards are an important technical support for industrial development. ETSI NFV ISG (Industry Specification Group), established in November 2012, is responsible for network function virtualization related standards. The NFV organization includes 6 working groups, IFA, SOL, EVE, TST, REL, and SEC. Since its establishment, it has published more than 100 documents, with more than 300 members and 38 operators including China Mobile.

Key milestones in ETSI ISG NFV standardization

Since 2013, ETSI has basically released the NFV standard results version (Release) every two years. Figure 1 shows the main content of ETSI ISG NFV standardization work. The NFV standardization process is divided into 4 stages, Release1 (2013-2014): Focus on the concept and feasibility of NFV. Release2 (2015-2017): Focus on the interoperability of NFV solutions. Release3 (2017-2019): Focus on the research on what enhancements are needed when NFV is put into operation, and how to enrich the NFV architecture framework and functional features. Release4 (2019-2021): Focus on the research on what enhancements are needed for large-scale commercial deployment of NFV, and how to make the NFV architecture framework and functions better meet the needs of 5G network deployment and future network virtualization.

NFV Release3 standard is refined, from NFV to 5G commercial use

Figure 1: General overview of NFV standards

Significantly enhanced functions based on the original NFV architecture R3

ETSI ISG NFV version 3 (Release3, R3 for short) started the research project in 2017. The research is based on the NFV document released by ETS ISG NFV at the end of 2014, without any changes to the NFV architecture. R3 introduces new functions on top of the basic functions of R2, and determines a total of 17 new features, including NFV information model, MANO management, network slicing management, multi-stack point connection, software upgrades, container technology, cloud native, etc. and the future Research content closely related to network deployment and emerging technologies.

All features of R3 and the corresponding NFV protocol and NFV entity impact are shown in Table 1:

NFV Release3 standard is refined, from NFV to 5G commercial use

Table 1: New features of NFV R3

NFV R3 standardization bears fruit, ZTE continues to invest

The NFV R3 standardization work will be completed in 2019. At present, 37 specifications have been released and 15 research topics are under development. It is planned that all research topics will be completed and the specifications will be released by the end of the year.

In the first half of the year, the NFV IFA standard group has completed “hardware acceleration”, “VNF network acceleration”, “NFV-MANO multi-domain service”, “NFV-MANO management”, “VNF snapshot”, “application and service management”, “NFV software update and upgrade”, “policy management”, “NS multi-stack point connection management”, “NFV network slicing” and other topics of Stage 2 specifications were released. In the second half of the year, the NFV SOL standard is about to complete the stage 3 specification release. After the NFV R3 standard is implemented, it will greatly promote the NFV commercial standardization process.

ZTE actively participates in ETSI NFV technical research and standard formulation, and has made active contributions to the high-quality release of NFV Rel-2 and Rel-3 phased versions. During the Rel-3 stage, ZTE led the research of the VNF snapshot (VNF_PHOTO) SOL group as a reporter, and as a key participant, invested in container technology, MANO management, NFV network slicing, NFV information model and other topics, and contributed more than 200 proposals .

・The container subject was added to the IFA029 “PaaS&Container” research subject report draft by expanding the research scope of IFA029 in 2018. The container topic defines scenarios related to container management and NFV enhanced architecture, typical scenarios such as virtual machine containers, bare metal containers, etc. NFV enhanced architecture includes container management function (CISM) embedded in VIM, and also includes two independent architectures of CISM. ZTE has contributed nearly 50 proposals to the draft, including the scenario of “Running Containers in Mixed Virtual Machine and Bare Metal Scenarios”, “NFVO Manages Container Service Resources”, and one of the two accepted architectures “CISM Embedded in VIM” “Architecture plan” is one of the important contributors to the draft.

・The topic of VNF snapshots is proposed to solve the problem of fast recovery by copying VNF instances when VNF is abnormal. The VNF snapshot feature realizes snapshots of VNF instances and VNF snapshot recovery operations to enhance the robustness of the NFV system. As a reporter in the SOL group, ZTE promoted the introduction of VNFSR (Snapshot Record File) and VNFSD (Snapshot Descriptor) in SOL010 to solve the problems in the rapid recovery of VNF instances and made positive contributions to the implementation of the VNF snapshot topic.

・The NFV network slicing feature defines the resource requirements of network slicing and enhances the related interfaces that support network slicing. The external network slicing management system will use NFV-MANO to manage the network services and resources used to serve the network slicing. During the progress of the NFV network slicing subject, ZTE proposed that the priority of network slicing needs to be considered in the NS lifecycle management to solve the problem of resource competition between NSs.

・ZTE has also made relevant contributions in other R3 topics. For example, in the MANO management subject, ZTE Corporation has cooperated with operators to promote alarm management, heartbeat management and other related use cases and solutions in the specification; in the NFV information model subject, ZTE actively participates in the discovery from tools to output documents And actively communicate with ETSI STF experts to discuss solutions.

In addition, at the NFV#28 plenary meeting that ended in September 2019, ZTE successfully led the establishment of a new NFV R4 container-related topic: “network connectivity for container based VNF”, and continued to promote the standardization of container technology in the NFV R4 standardization research phase.

ZTE will continue to increase investment in NFV standardization and promote NFV to 5G commercial use.

Standards are an important technical support for industrial development. ETSI NFV ISG (Industry Specification Group), established in November 2012, is responsible for network function virtualization related standards. The NFV organization includes 6 working groups, IFA, SOL, EVE, TST, REL, and SEC. Since its establishment, it has published more than 100 documents, with more than 300 members and 38 operators including China Mobile.

Standards are an important technical support for industrial development. ETSI NFV ISG (Industry Specification Group), established in November 2012, is responsible for network function virtualization related standards. The NFV organization includes 6 working groups, IFA, SOL, EVE, TST, REL, and SEC. Since its establishment, it has published more than 100 documents, with more than 300 members and 38 operators including China Mobile.

Key milestones in ETSI ISG NFV standardization

Since 2013, ETSI has basically released the NFV standard results version (Release) every two years. Figure 1 shows the main content of ETSI ISG NFV standardization work. The NFV standardization process is divided into 4 stages, Release1 (2013-2014): Focus on the concept and feasibility of NFV. Release2 (2015-2017): Focus on the interoperability of NFV solutions. Release3 (2017-2019): Focus on the research on what enhancements are needed when NFV is put into operation, and how to enrich the NFV architecture framework and functional features. Release4 (2019-2021): Focus on the research on what enhancements are needed for large-scale commercial deployment of NFV, and how to make the NFV architecture framework and functions better meet the needs of 5G network deployment and future network virtualization.

NFV Release3 standard is refined, from NFV to 5G commercial use

Figure 1: General overview of NFV standards

Significantly enhanced functions based on the original NFV architecture R3

ETSI ISG NFV version 3 (Release3, R3 for short) started the research project in 2017. The research is based on the NFV document released by ETS ISG NFV at the end of 2014, without any changes to the NFV architecture. R3 introduces new functions on top of the basic functions of R2, and determines a total of 17 new features, including NFV information model, MANO management, network slicing management, multi-stack point connection, software upgrades, container technology, cloud native, etc. and the future Research content closely related to network deployment and emerging technologies.

All features of R3 and the corresponding NFV protocol and NFV entity impact are shown in Table 1:

NFV Release3 standard is refined, from NFV to 5G commercial use

Table 1: New features of NFV R3

NFV R3 standardization bears fruit, ZTE continues to invest

The NFV R3 standardization work will be completed in 2019. At present, 37 specifications have been released and 15 research topics are under development. It is planned that all research topics will be completed and the specifications will be released by the end of the year.

In the first half of the year, the NFV IFA standard group has completed “hardware acceleration”, “VNF network acceleration”, “NFV-MANO multi-domain service”, “NFV-MANO management”, “VNF snapshot”, “application and service management”, “NFV software update and upgrade”, “policy management”, “NS multi-stack point connection management”, “NFV network slicing” and other topics of Stage 2 specifications were released. In the second half of the year, the NFV SOL standard is about to complete the stage 3 specification release. After the NFV R3 standard is implemented, it will greatly promote the NFV commercial standardization process.

ZTE actively participates in ETSI NFV technical research and standard formulation, and has made active contributions to the high-quality release of NFV Rel-2 and Rel-3 phased versions. During the Rel-3 stage, ZTE led the research of the VNF snapshot (VNF_PHOTO) SOL group as a reporter, and as a key participant, invested in container technology, MANO management, NFV network slicing, NFV information model and other topics, and contributed more than 200 proposals .

・The container subject was added to the IFA029 “PaaS&Container” research subject report draft by expanding the research scope of IFA029 in 2018. The container topic defines scenarios related to container management and NFV enhanced architecture, typical scenarios such as virtual machine containers, bare metal containers, etc. NFV enhanced architecture includes container management function (CISM) embedded in VIM, and also includes two independent architectures of CISM. ZTE has contributed nearly 50 proposals to the draft, including the scenario of “Running Containers in Mixed Virtual Machine and Bare Metal Scenarios”, “NFVO Manages Container Service Resources”, and one of the two accepted architectures “CISM Embedded in VIM” “Architecture plan” is one of the important contributors to the draft.

・The topic of VNF snapshots is proposed to solve the problem of fast recovery by copying VNF instances when VNF is abnormal. The VNF snapshot feature realizes snapshots of VNF instances and VNF snapshot recovery operations to enhance the robustness of the NFV system. As a reporter in the SOL group, ZTE promoted the introduction of VNFSR (Snapshot Record File) and VNFSD (Snapshot Descriptor) in SOL010 to solve the problems in the rapid recovery of VNF instances and made positive contributions to the implementation of the VNF snapshot topic.

・The NFV network slicing feature defines the resource requirements of network slicing and enhances the related interfaces that support network slicing. The external network slicing management system will use NFV-MANO to manage the network services and resources used to serve the network slicing. During the progress of the NFV network slicing subject, ZTE proposed that the priority of network slicing needs to be considered in the NS lifecycle management to solve the problem of resource competition between NSs.

・ZTE has also made relevant contributions in other R3 topics. For example, in the MANO management subject, ZTE Corporation has cooperated with operators to promote alarm management, heartbeat management and other related use cases and solutions in the specification; in the NFV information model subject, ZTE actively participates in the discovery from tools to output documents And actively communicate with ETSI STF experts to discuss solutions.

In addition, at the NFV#28 plenary meeting that ended in September 2019, ZTE successfully led the establishment of a new NFV R4 container-related topic: “network connectivity for container based VNF”, and continued to promote the standardization of container technology in the NFV R4 standardization research phase.

ZTE will continue to increase investment in NFV standardization and promote NFV to 5G commercial use.

The Links:   LM170E03-TLB2 T298N12TOF

Author: Yoyokuo