1. No category

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)
Scope
•
•
•
•
CMCC PTN network overview
Services requirements for PTN
Networks Requirements for PTN
Overview of Virtual Network Operations for
Packet transport networks
CMCC PTN network overview
CMCC End to end PTN networks
Volume
PTN
>500,000
Enterprise access
Metro
Capacity
>1Tbps
backbone
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
Services requirements
1.
Fast Provisioning
2. Operation optimization
• Apply service
• Apply service in
through PAD/Phone
carrier office
• Provisioning period • Provisioning period
mins~days
>1month
• Manual operation
process
• Show service
status to Operator
3. Added value IT services
• Intelligent
operation system
• Show service
status to
users/operator
What benefits?
Virtual NE
PTN vCPE
…
vCPE2
Firewall
vCPE1
NAT
NFV Server
…
Hypervisor
VCPE
On-demand
Value added
services
NFV
vCPEn
Controller
OSS
Firewall/NAT etc.
Operation
optimized
Service provisioning
Simplify
Edge
Reduces some
functions from CPE
Branch
Enterprise branch
PTN
CPE without virtulization
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.
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
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
•
Keep the legacy PTN box
Qx
PTN
In order to realize end-to-end service provision, the ACTN architecture [ACTN-FWK]
should consider the migration from traditional network management systems.
Network requirements: Multi-user
Network Slices
ACTN
Enterprise customers
Access point 1
Family broadband
Reconfigurable
MPLS-TP based
PTN
Access
Point 2
PTN
Nodes
Access
Point 3
Wireless backhauling
Networks slices
End to END Virtual Networks Operations
APP
Control
super controller
(VNC Provider)
Control
OSS
AB agent
AB agent
Metro EMS
Backbone EMS
Qx
Enterprise PTN
Accessing
Networks
Metro (PTN/POTN)
AB agent
Controller
Controller
Metro EMS
Qx
Backbone
Metro PTN/POTN
Enterprise PTN
Accessing
Networks
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
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)
SKT 4G Mobile network overview
PTN EMS
Radio
Access
Network
PTN
(MPLS-TP)
IP/MPLS EMS
PTN
(MPLS VPN)
EMS
Mobile
Core
Network
(LTE EPC)
Internet
LTE RU
Mobile Backhaul Network
• Domain-specific control
• Separation of domain operation
11
Pre-5G Mobile network overview
No relationship
PTN EMS
Radio
Access
Network
PTN
(MPLS-TP)
IP/MPLS
EMS
Mobile Edge
DC
Network
NFV/SDN
Controller
PTN
(MPLS VPN)
Mobile Core
Network
Internet
LTE RU
Mobile Backhaul Network
• Similar issue as previous slide with more complexity in control and operation
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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
5G Connectivity
Mobile Edge DC
Network
Packet-Optical
Transport Network
Mobile Core DC
Network
Transport
Network
13
Local Breakout
5G data offloading to reduce congestion/load on core and to provide cost effective solutions
SKT
Enabling Platform
Internet
Radio
Access
Network
5G Connectivity
Mobile Edge DC
Network
Packet-Optical
Transport Network
Mobile Core DC
Network
Transport
Network
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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.
15
Thank you!
IETF 88, Vancouver
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