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
Enterprise access
Metro
backbone
Capacity
>1Tbps
Volume
>500,000
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
1. Fast Provisioning
2. Operation optimization
Apply service in carrier office
Provisioning period >1month
Apply service through PAD/Phone
Provisioning period mins~days
Manual operation process
Show service status to Operator
Intelligent operation system
Show service status to users/operator
3. Added value IT services
What benefits?
Virtual NE
PTN vCPE
vCPEn
NFV
On-demand
Value added
services
Firewall/NAT etc.
Simplify
Edge
Reduces some functions from CPE
Operation
optimized
Service provisioning …
vCPE2
Firewall
vCPE1
NAT
虚拟化
Hypervisor …
Controller
OSS
VCPE
NFV Server
Enterprise branch
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
Access Point 2
Access Point 3
PTN Nodes
ACTN
Reconfigurable MPLS-TP based PTN
Enterprise customers
Access point 1
Family broadband
Wireless backhauling
Networks slices

9. End to END Virtual Networks Operations
APP
super controller
(VNC Provider)
OSS
Metro EMS
Backbone EMS
Metro EMS
Control
Control
AB agent
AB agent
AB agent
Controller
Controller 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
PTN EMS
IP/MPLS EMS
EMS
Mobile
Core
Network
(LTE EPC)
Radio
Access
Network
Internet
PTN
(MPLS-TP)
PTN
(MPLS VPN)
LTE RU
Mobile Backhaul Network
Domain-specific control
Separation of domain operation

12. Pre-5G Mobile network overview
No relationship
PTN EMS
IP/MPLS EMS
NFV/SDN Controller
Mobile Edge DC
Network
Mobile Core
Network
Radio
Access
Network
PTN
(MPLS-TP)
PTN
(MPLS VPN)
Internet
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
Radio
Access
Network
Mobile Edge DC
Network
Packet-Optical
Transport Network
Mobile Core 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
Radio
Access
Network
Mobile Edge DC
Network
Packet-Optical
Transport Network
Mobile Core 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