sdn for multi-layer ip & optical...

www.lightreading.com

d


SDN for Multi-Layer IP

& Optical Networks

Sterling Perrin

Senior Analyst, Heavy Reading


Agenda

• Definitions for SDN and NFV

• SDN Drivers and Barriers

• SDN Use Cases and Applications – General Uses

– Specific Operator Examples

• Multi-Layer SDN Value Proposition and

Demonstrations

• Discussion and Q&A

2


The Origins of OpenFlow & SDN

• Term used to initially, describe OpenFlow use on routed campus networks

• SDN term has since broadened considerably from the original use: – OpenFlow based and non-OpenFlow based definitions

– New and existing technologies being coopted

– Suppliers capitalizing on SDN buzz to apply “SDN” moniker to nearly everything

• OpenFlow itself has expanded from its original campus use case

TR10: Software-Defined Networking

Kate Greene

March/April 2009

…Frustrated by this inability to fiddle with Internet routing in the real world,

Stanford computer scientist Nick McKeown and colleagues developed a

standard called OpenFlow that essentially opens up the Internet to researchers,

allowing them to define data flows using software -- a sort of "software-defined

networking”…

3


Some SDN Definitions

A Standards Body Definition: Software Defined Networking (SDN) is an emerging

network architecture where network control is decoupled from forwarding and is directly

programmable. This migration of control, formerly tightly bound in individual network

devices, into accessible computing devices enables the underlying infrastructure to be

abstracted for applications and network services, which can treat the network as a

logical or virtual entity… Network intelligence is (logically) centralized in software-based

SDN controllers, which maintain a global view of the network."

— Software-Defined Networking: The New Norm for Networks, April 13, 2012

An Academic Definition: SDN is the separation of the control plane from the forwarding plane…

Everything else is a benefit that derives from that separation.

— Nick McKeown, OFC/NFOEC 2013

4


NFV Definition

5

Network Functions Virtualization aims to transform the way that network

operators architect networks by evolving standard IT virtualization

technology to consolidate many network equipment types onto industry-

standard, high-volume servers, switches, and storage, which could be

located in datacenters, network nodes, and in the end-user premises… It

involves the implementation of network functions in software that can run

on a range of industry-standard server hardware, and that can be moved

to, or instantiated in, various locations in the network as required, without

the need for installation of new equipment.

Network Functions Virtualization Definition:

5

http://www.google.com/url?sa=i&rct=j&q=ETSI+logo&source=images&cd=&cad=rja&docid=62bxAfPboslKdM&tbnid=4DJOFVfT_CgE3M:&ved=0CAUQjRw&url=http://www.mandate376.eu/&ei=TrD6UbXLPLLk4AOmpoHQBQ&bvm=bv.50165853,d.dmg&psig=AFQjCNEi6_clfKGCcSi9I60OSL_rp26nJA&ust=1375470026879173


Network Functions Virtualization Proprietary Network Appliances

Message

Router Session

Border

Controller

CDN WAN

Acceleration

Tester/QoE

Monitor Firewall

Intrusion

Prevention

System

Carrier Grade

NAT

B-RAS RNC PE Router SGSN/GGSN

Software Appliances

Standard High-Volume Storage

Orchestrated, automatic

& remote install

Pools of compute resources

Standard High-Volume Servers, Switches & Routers

Source: ETSI NFV ISG, 2012 6

http://www.google.com/url?sa=i&source=images&cd=&cad=rja&docid=CBlvGcju2Vt3tM&tbnid=J9EQTVKblaLxpM:&ved=0CAgQjRwwAA&url=http://h18004.www1.hp.com/products/servers/proliant-bl/c-class/460c/&ei=tt21UYbBF4SLrAGr-IGYCA&psig=AFQjCNE3gayMdTjc2VF_QGdkRsn8SSK5kA&ust=1370959670439346


Drivers & Benefits of SDN

Transport Group Priorities

Lower capex – through lower cost HW AND through more efficient use of network resources and capacity

Lower opex – especially in maintaining distributed equipment

Lower energy costs – particularly important for some

Interoperability – multi-vendor, multi-layer, and multi-domain

Product Group Priorities

New products and features that are only feasible in an SDN environment

Reach new customers via virtualized service environment

Much faster upgrade cycles for both hardware and software components

Faster application/service creation and deployment

Drivers and potential benefits of SDN vary by which group is asked

7


Major Barriers to Adoption

• Major vendors dragging their feet, or lack of clarity

on key suppliers and ecosystem builders

• Issues around legacy OSS

• Changing the corporate culture

(operations, product development)

• Lack of standards in some areas

• Lack of orchestration layer

• Throughput issues at high end

• Lack of clarity on "hybrid" approaches

• Latency and other net/app-specific issues

8


SDN Potential Use Cases USE CASE ROLE OF SDN

Bandwidth on demand

Enable programmatic controls on carrier links to request extra bandwidth when needed.

Performance on demand

API-driven service in which the network dynamically ensures not only that the appropriate capacity is available for a given application but also that a guaranteed level of performance is delivered.

Virtual private cloud Operator offers a virtual cloud service within its network that provides enterprise-grade security, performance, and control attributes associated with a private cloud.

Service chaining / traffic steering with SDN

In SDN networks, the ability to associate the right traffic to the right appliance, thus making use of the appliance only when needed. (Can be used in conjunction with NFV.)

Network virtualization – multi-tenant networks

To dynamically create segregated topologically-equivalent networks across a datacenter, scaling beyond typical limits of VLANs today at 4K.

Network virtualization – stretched networks

To create location-agnostic networks, across racks or across datacenters, with VM mobility and dynamic reallocation of resources.

9


Pacnet Enabled Network

HONG KONG, November 4, 2013 – Pacnet today announced the beta launch of the Pacnet Enabled Network (PEN, an industry-first service platform that leverages software-defined-networking (SDN) to deliver flexible and scalable bandwidth configurable by customers, heralding a major advance in the capabilities of enterprises and carriers to build high-performance and cloud-ready networks.

Features:

• Fully automated provisioning with flexible network optimization options

• Pay for what you use

• Hybrid cloud gateway

Network-as-a-Service to Power Enterprises in the Application Aware Age

10

http://www.google.co.in/url?sa=i&source=images&cd=&cad=rja&docid=6Ug6uLQNEiF03M&tbnid=EuT6N2QbTJjBUM:&ved=0CAgQjRwwAA&url=http://www.marketwired.com/press-release/sundaram-business-services-ltd-selects-pacnet-to-support-australia-growth-1840822.htm&ei=gSGAUrzxFYKt0QWs2YGgBA&psig=AFQjCNHWSy5gqwhk3F7VCnpmAjA2flroyg&ust=1384215297389922


NTT Communications

British Airways High Life, Oct. 2013 July 29, 2013 - Leading the way in enterprise cloud services, and building on the company’s initial launch in Japan and Hong Kong in June of last year, NTT Com announced in February 2013 the global availability of its pioneering Software-Defined Networking (SDN)-based Enterprise Cloud with the addition of data centers in Singapore, England, and Virginia and California in the United States. With Enterprise Cloud, NTT Com became the first provider in the world to employ SDN in its global network.

11


Telefónica: Demonstrated Capex/Opex

Savings via IP + Optical Layer Integration

Source: “The Economics of Next-Gen ROADM Networks” Heavy Reading Whitepaper, September 2012

Telefónica Capex Savings Using Multi-Layer Restoration • Use of multi-layer

restoration led to over 37 percent reductions in capital expenditures in IP/DWDM networks

• Mean time to repair can be extended by a factor of 20 while keeping five nines availability

• New services could be activated in less than 50 seconds, versus hours without employing multi-layer control planes.

• Homegrown software glued Layers 0 and 3 in this demonstration…

12


Infinera Multi-Layer SDN Demo

Hybrid OpenFlow/GMPLS 500G super channels

1*100GbE 1*10GbE

1*100GbE 1*10GbE 2*10GbE

4*10GbE 4*10GbE

Floodlight

Big Data Application

Control Plane Layer

Application Layer

L2/L3 Layer

Transport Layer

OSCARS

DTN-X & Open Transport Switch

Host A Host B

OTS

OTS

OTS

MLXe Router

OTS Config Manager

REST API

The Demo

IP8800

Source: Infinera, 2013 13


Some Key Questions & Industry Challenges

• In addition to ONF/OpenFlow, which other standards and standards

bodies will be essential for SDN development?

• How must transport SDN evolve differently from higher SDN in order to

account for the impacts of the analog domain?

• In which segments will SDN/network-functions-virtualization drive an

industry shift toward commercial off-the-shelf (COTS) hardware?

• Where in the network do operators most require vendor interoperability,

and what is driving this need?

• What is the future of core routing in an SDN-driven world?

• Can telcos resolve rivalries and tensions among departments and

divisions in a way that enables them to fully realize the benefits of SDN?

• Should the hardware suppliers focus on their hardware and leave the

software development around SDN to software specialists?

14

sdn for multi-layer ip & optical...

Documents