ACTN Use-cases for Packet Transport Networks

1. ACTN Use-cases for Packet Transport Networks draft-cheng-actn-ptn-requirements-00 IETF 90th, July 20 – July 25, 2014 Weiqiang Cheng (CMCC) Yunbin Xu, Guoying Zhang (CATR)

2. Scope • CMCC PTN network overview • Services requirements for PTN • Networks Requirements for PTN • Overview of Virtual Network Operations for Packet transport networks

3. CMCC PTN network overview CMCC End to end PTN networks Volume >500,000 Capacity >1Tbps PTN backbone Enterprise access Metro • Data Plane-Configurable： • MPLS-TP: Labels of PW and LSP distributed statically • L3 VPN: L3 Tunnels in core layer for LTE X2 configured statically • Protection: configuration statically • Management Plane-Centralized： • centralized NMS server and manually configuration • Need Control Plane - faster provisioning and operational tools foe end-to-end connectivity • Separated from data Plane PTN is able to evolve to ACTN in nature

4. Services requirements On-demand Value added services Reduces some functions from CPE Firewall/NAT etc. Service provisioning • 1. Fast Provisioning 2. Operation optimization Simplify Edge Operation optimized • Apply service through PAD/Phone • Provisioning period mins~days • Intelligent operation system • Show service status to users/operator • Manual operation process • Show service status to Operator • Apply service in carrieroffice • Provisioning period >1month 3. Added value IT services What benefits? Virtual NE PTN vCPE NFV vCPEn … Firewall vCPE2 vCPE1 NAT 虚拟化 … Hypervisor Controller OSS NFV Server VCPE Branch Enterprise branch PTN CPE without virtulization

5. Network requirements: Multi-domain end to end control • The operators had built a large scale of packet transport networks and divided them into different areas such as access, metro and backbone networks, each area has their own management systems. • Separated operation in different domains makes the provisioning slow and operation efficiency low.

6. Network requirements: Multi-Layer resources coordination • LTE backhauling requires the PTN to realize L3 network function. This function requires the management systems operate in different layers of networks, and leads to separate and fragmented network configuration • Operators want to obtain the flow information and realize the load balancing within PTN networks MPLS-TP MPLS

7. Network requirements: Migration from network management systems Super Controller compatibility App OSS/NMS • Interface Compatible with legacy EMS/OSS interface • VNC Services provider Super Controller(VNC Services provider) EMS evolution • ACTN extension • VNC agency EMS with VNC agent Forwarding layer Qx • Keep the legacy PTN box PTN In order to realize end-to-end service provision, the ACTN architecture [ACTN-FWK] should consider the migration from traditional network management systems.

8. Network requirements: Multi-user Network Slices ACTN Enterprise customers Access point 1 Family broadband Wireless backhauling Reconfigurable MPLS-TP based PTN Access Point 3 Networks slices PTNNodes Access Point 2

9. End to END Virtual Networks Operations APP super controller (VNC Provider) OSS Metro EMS Backbone EMS Metro EMS Controller Controller AB agent AB agent AB agent Control Control Qx Qx Backbone Enterprise PTN Accessing Networks Enterprise PTN Accessing Networks Metro PTN/POTN Metro (PTN/POTN) • Super Controller (VNC Service Provider)provide centralized network control of enterprise access network、metro network、backbone enterprise network • The traditional networks can be considered as a virtual network for VNC service provider, which can be realized by network management systems providing an abstract (AB) agent for VNC

10. ACTN Use-case for Mobile Virtual Network Operation for Multiple Domains in a Single Operator Network draft-shin-actn-mvno-multi-domain-00 July 24, 2014 IETF 90 – Toronto Jongyoon Shin, Rod Hwang, Jongmin Lee (SK Telecom)

11. SKT 4G Mobile network overview IP/MPLS EMS EMS PTN EMS Mobile Core Network (LTE EPC) Radio Access Network Internet PTN (MPLS VPN) PTN (MPLS-TP) LTE RU Mobile Backhaul Network • Domain-specific control • Separation of domain operation

12. Pre-5G Mobile network overview No relationship IP/MPLS EMS NFV/SDN Controller PTN EMS Mobile Edge DC Network Mobile Core Network Radio Access Network PTN (MPLS VPN) Internet PTN (MPLS-TP) LTE RU Mobile Backhaul Network • Similar issue as previous slide with more complexity in control and operation

13. SKT 5G Mobile network Strategy • Enabling Platform is the virtualized network architecture with centralized control for value creating network • Need a global abstract view • Need an operational simplicity SKT Enabling Platform Internet Packet-Optical Transport Network Radio Access Network Mobile Core DC Network Mobile Edge DC Network 5G Connectivity Transport Network

14. Local Breakout 5G data offloading to reduce congestion/load on core and to provide cost effective solutions SKT Enabling Platform Internet Packet-Optical Transport Network Radio Access Network Mobile Core DC Network Mobile Edge DC Network 5G Connectivity Transport Network

15. Virtual Network Operations for Mobile Operator’s Networks • SKT Enabling Platform (MVNO Coordinator) is a centralized control for value creating network • Need a standard API/protocols from each Domain Control of various kinds to SKT Enabling Platform (MVNO Coordinator) to facilitate dynamic connectivity requirements. • Need a common network resource abstraction model • Need a unified control scheme to interface various technology/data plane/management plane/vendor domains that operates on a virtual level.

16. Thank you! IETF 88, Vancouver