1. Proposal for TOSCA: Carrier’s SDN Service Orchestration/Composition
Fengkai Li
Huawei

2. Variety of Network Service
Carrier’s business is changing
Flexible, easy to orchestrate, diverse of network services are key points for Carrier’s revenue growing.
Global Telcos Revenues ( Trillion US$)
2.45
IT/Cloud Service
20%
M2M
Flattening
Growing
Video
Voice
Broadband
SMS
Smart Family
Education
Healthcare
Music
Traditional Telco Business
Variety of Network Service
2.00 5%
FBB, Digital Home, Video
10%
15%
15%
Mobile Data Traffic
/Mobile Internet
30%
70%
Voice + SMS
35%
2012
2016
Source: Gartner and Ovum Analysis
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3. LEGO Style Network Service Composition is Coming
Service Abstraction
Service Modeling
Service Composition
Service Delivery like Building Block
NFV Module
WAN Module
DC Module
LEGO-Style Service Orchestration
Service Composition
Customer Requirement
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4. Carrier’s requirements for orchestration
Education Constitution
Commercial Company
Web Service Provider
Big Data Analysis Service Provider
Online Game Provider
Diverse Network Services
Scenario Oriented Service Templates
BOD Network Template
Low LR
Network Template
Cloud Network Template
Big Data network Template
Realtime Network Template
Orchestration/Composition
Orchestrating of abstracted network resources functionalities
Network Resource/Functionality Abstraction
(Primitive, Attributes, etc.)
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5. Scenario Enterprise A has the following networking requirements:
Beijing
Xi’an
Guangzhou
Customer
OAM
Product
Enterprise A has the following networking requirements:
Connecting three sites physically located separately with specific bandwidth guarantee.
Blocking specific traffic from target CFN (Customer Facing Node) in case of traffic congestion.
Redirecting all the traffic to Internet to DPI server and logging.
Migrating non-VIP traffic from overloading connection to lightweight ones.
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6. Constitutions of a SDN service
Network Service
Multiple site connecting service template with SLA guarantee. ……
Network Operation
CRUD for network object management, such as lifecycle, property, attributes, etc.
Allowing/Denying specific traffic flow.
Redirecting specific traffic to FW.
Changing QoS bandwidth for specific flow
Network Object
Sites physically located separately.
VAS nodes, such as FW, DDoS, etc.
Specific traffic flow packets.
Connection between CONs.
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7. Carrier’s SDN service Case 1, BoD (Bandwidth on Demand)
Enterprise B needs a connection between branch headquarter offices. There will be a requirement of adjusting the bandwidth of the connection on demand.
The adjustment can be triggered when "conditions" meet. For example, the bandwidth will be adjusted by the timing condition meets. At night, less bandwidth is required for backup traffic. The bandwidth adjustment can also be triggered by traffic bursting.
This use case can also be generalized to more resource reservation policies.
WAN
Branch
Headquarter
Condition: From 8am To 6pm
Bandwidth: 10G
Condition: From 6pm To 8am
Bandwidth: 1G
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8. Carrier’s SDN service Case 2, DC/WAN Interconnection
WAN/DC Interconnection
Enterprise C wants to inter-connect their multiple sites with layer 2/3 connections.
The basic connection types include:
P2P (Point to Point), P2MP (Point to Multi-Point), and the Full Mesh.
It is also desired that the user can construct the topology freely by composing the basic connection types.
Site2
Site2
DC/WAN
DC/WAN
DC/WAN
Site1
Site2
Site1
Site1
Site3
Site3
a) Point to Point
b) Point to Multi-Point
c) Full Mesh
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9. Carrier’s SDN service Case 3, VPC (Virtual Private Cloud)
Carrier/Operator provides VPC service for enterprises. A typical architecture is to allocate two zones in the VPC for security consideration.
DMZ provides http/ /video services for access from internet.
Interior provides compute and storage resources for internal use.
Internet access cannot reach the interior.
User can also describe connectivity to exterior, i.e. the internet or existing site.
DMZ
Interior
Internet
VPC
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10. Carrier’s SDN service Case 4, Hybrid Cloud
Hybrid cloud is a typical cloud configuration for enterprises to combine the existing site and new virtual private cloud in a public cloud center. This use case is a combination of inter- connection between VPC, data center inter-connection, SFC and BoD.
Use case Requirements:
For secularity issue, the vPC is separated into two zones, DMZ and Interior.
All the traffic from/to Internet via DMZ should go through LB and FW.
On demand adjustment of bandwidth between Enterprise site and VPC for cloud bursting, backup, etc.
Requirements for SFC, or traffic steering among VAS is within the scope of Ad Hoc on NFV in TOSCA.
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11. Possible mapping for SDN and TOSCA
SDN Service
TOSCA
Network Service
Service Template
Service
template ……
Service
template
Network Operation
Relation Template ……
Operation
Operation
Network object
CFN
Node Template ……
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12. Gaps between SDN Service requirements and TOSCA
CFN 2 1
TOSCA Node template
Gaps:
CFN type and properties can be mapped to TOSCA node “type” and “Properties”, but with new parameters:
New types for Nodes.
Prosperities for nodes of new type.
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13. Scope and outputs for the proposal
Problem description:
Carriers need an easy and fast way to customize and develop network service through the orchestration/composition of abstracted network resources/functionalities, thus meeting the time-to- market, diverse, and innovating technique deploying requirements.
Target User:
Network service designer, or developer for service provisioning
What needed to be done:
Fulfill the gaps between TOSCA and SDN service requirements
Possible outputs:
Network resources, functionalities abstraction models.
Network service templates targeted for commonly used scenarios.
Methods of the orchestration/composition for service template generating.
Target User of Deliverables:
Network service designer, or developer for service provisioning.
Cooperation with other SDOs (such as ONF, MEF, etc.) in related fields.
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14. Scope difference analysis with NFV Ad Hoc
The proposal focus on:
Carrier grade network service construction, orchestration and composition, which is composed of network objects and network operations. This would include:
Network object, CFN (may be host, Layer 2/3 group, external group out of control, ECMP/UCMP LB, DDoS cleaner, CDN cache server, etc.), Connection (may be of different types, such as P2P, P2MP, Mesh), ServiceFlow (may be different kind of packets for various services, such as VOIP, SIP, HTTP, VLC, etc. ).
Network operation, this would be allow, deny, go-through, SLA guarantee, traffic migrating and steering, traffic isolation, etc. CRUD operations for lifecycle management.
NFV Ad Hoc focus on:
NFV provides network service by dynamic methods to control how network functions are interconnected and how traffic is routed across those connections between the various network functions.
NFV service focus mainly on the connection, topology of VNFs, and forwarding graphs that specify how packets are forwarded between VNFs.
Fulfill all the gaps between TOSCA and NFV
Introducing NFV specific new node types
Examples for NSD, VNFD, VDU, VLD and VNF forwarding graph using TOSCA
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15. Thank you.
Q&A