Sdn problem statement and use cases for data center applications
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SDN Problem Statement and Use Cases for Data Center Applications. Ping Pan Thomas Nadeau November 2011. Problem. In data center environment, the operation at application-level does not have the knowledge of the underlying network condition: Make network provisioning complex

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SDN Problem Statement and Use Cases for Data Center Applications

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Sdn problem statement and use cases for data center applications

SDN Problem Statement and Use Cases forData Center Applications

Ping Pan

Thomas Nadeau

November 2011


Problem

Problem

  • In data center environment, the operation at application-level does not have the knowledge of the underlying network condition:

    • Make network provisioning complex

    • Difficult to expand intra/inter-data-center services

  • Many are developing proprietary solutions

    • This area involves the interoperability between applications, storage servers and networking routers/switches

    • Need to have a standardized protocol


What is needed to address the problem

What is needed to address the problem…

Logical Networks

(VM’s, Applications)

Logical Networks

(VM’s, Applications)

Logical Networks

(VM, Applications)

Physical Network Virtualization, Programmability and Monitoring)

Physical Networks

Physical Networks


User case 1 vm migration traditional model dedicated network devices and manual configuration

User Case #1: VM Migration: traditional model(Dedicated network devices, and manual configuration)

Data Center

Data Center

VM 1

VM 2

VM 1

VM 2

Hypervisor

Service Manager

Hypervisor

Router/Switch

Router/Switch

Tunnel

Network

Routers/Switches

Network

Routers/Switches


Sdn problem statement and use cases for data center applications

User Case #1 (cont.): Manage via network virtualization(A software solution by constructing L2 over L3, but no awareness on the underlying network links)

Data Center

Data Center

VM 1

VM 2

VM 1

VM 2

Service Manager

Logical Switch

Logical Switch

Tunnel

Net Virtualization

Controller

Hypervisor

Hypervisor

Network

Routers/Switches

Network

Routers/Switches


Sdn problem statement and use cases for data center applications

User Case #1 (cont.): Mange via SDN Controller(Support network virtualization by interfacing with the underlying physical network, and leveraging existing techniques to provide provisioning, VPN and SLA support)

Data Center

Data Center

VM 1

VM 2

VM 1

VM 2

Hypervisor

Cloud Service Manager

Hypervisor

SDN Controller

Network

Routers/Switches

Network

Routers/Switches

Tunnel


User case 2 cont application to network vpn mapping

User Case #2 (cont.): Application-to-Network VPN Mapping

SDN

Controller

Mapping of application connectivity to network VPN

MPLS

Network

Data

Centers

VPN

VLAN

App1

VM

Switch

VM

App2

VLAN

VPN

Network VPN infrastructure

(TE, SPB, PBB, EVPN, OpenFlow…)

Application VPN

(with various connectivity and SLA requirements)


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