FREE ELECTRONIC LIBRARY - Dissertations, online materials

Pages:   || 2 |

«Executive Summary Enterprises today are radically different than those even a few years ago. Back in the 1990s, IT architects designed the WAN to ...»

-- [ Page 1 ] --

Do More with MPLS: The Anywhere Office

Enables Remote and Virtual Workers

By Johna Till Johnson

President & Sr. Founding Partner, Nemertes Research

Executive Summary

Enterprises today are radically different than those even a few years ago.

Back in the 1990s, IT architects designed the WAN to connect traditional office

facilities—in fact, “WAN site” and “office building” were effectively synonymous.

These days, roughly 90% of employees reside and work someplace other than at corporate headquarters—in workplaces as disparate as home offices, hotel rooms, out in the field, and at customer sites. And today’s WANs need to be designed to accommodate the needs of these “anywhere office” workers.

Fortunately, IT planners can choose from a bevy of tried-and-true technologies such as MPLS to deliver consistent application performance to this “anywhere workforce”. Moreover, MPLS-based architectures can lay the groundwork for next-generation cloud communications services, including video, collaborative services, and unified communications.

The Issue Most enterprises have deployed WANs based on multiprotocol label switching (MPLS): 84% of enterprises participating in Nemertes’ 2009 benchmark say they’ve deployed MPLS at least somewhere in their WANs—up from 76 percent in 2008, and just 24 percent in 2004. The advantages to an MPLS WAN are well- known. One is the ability to support end-to-end traffic prioritization and quality of service (QoS), which is critical for latency-sensitive traffic like voice and video, as well as emerging applications such as desktop virtualization. Another advantage is the ability to support any-to-any traffic flows (again, these are characteristic of human-to-human applications like voice and video, as opposed to machine-to- machine applications such as client-server or web-based applications). And MPLS scales nicely with application bandwidth requirements, from sub-T1 to OC-3 and beyond.

1 ©Nemertes Research 2009 www.nemertes.com  888-241-2685 DN0702 What many companies haven’t yet realized, however, is how MPLS can also help companies connect their increasingly distributed and remote employees and sites. The concept of the “anywhere office”—the idea that employees should be able to work effectively regardless of geography—is rapidly taking hold; 87 percent of organizations consider themselves “virtual workplaces”. But the hidden dynamic when it comes to supporting these “anywhere offices” is the presumption that regardless of how far-flung or remote, employees should have the same access to the same applications as their peers in more established offices. That means that these employees have the same requirements for prioritization, QoS, any-to-any connectivity, security, and bandwidth as their in-office peers.

The Evolution of WANs To understand how MPLS can enable the anywhere office, it helps to start with a historical review of WAN design. In particular, the definition of a WAN has undergone a subtle, but critical, evolution over the past two decades.

In the 1990s, WAN architects made several (usually unstated) design

assumptions, including:

 Traffic consisted overwhelmingly of data applications. Voice and video were handled over separate networks (typically voice VPNs and ISDN, respectively). That meant that a hub-and-spoke architecture made perfect sense (since traffic primarily flowed from servers to users).

 Only office sites merited WAN connectivity, and most employees worked in offices. The handful of employees that required different arrangements gained connectivity through separate networks (typically dial-up connectivity to remote-access gateways and later, services).

 Last and most crucially, there was an implicit assumption that employees outside of the core WAN sites simply had to ratchet down their expectations for application performance.

In addition to these assumptions, designers relied on a slowly-expanding portfolio of technology options. The earliest IP WANs were based on leased-line networks (routers interconnected via leased lines) on routed leased-line connections. As frame relay began to emerge in the mid 1990s, it served as a costeffective way to interconnect sites and give architects a way to limited way prioritize different types of traffic. Later still, companies began deploying asynchronous transport mode (ATM) technology, which provided both connection-oriented services and more sophisticated QoS than frame relay.

By approximately 2000, a new technology had emerged that represented in many ways a paradigm shift over previous options. MPLS-based services gave network architects access to a much broader range of bandwidths than ATM and frame relay, added support for QoS based on mapping IP header information to optimize paths across the carrier network, and was based on a meshed design to support any-to-any connectivity. The most significant transition over the decade 2 ©Nemertes Research 2009 www.nemertes.com  888-241-2685 DN0702 since then has been the overwhelming rush to embrace MPLS-based services (as noted, 84% percent of companies now deploy such services).

But technology wasn’t the only thing that changed. Over the same 20 years, the design assumptions that WAN architects started with gradually eroded—to the point where today, none of the earlier assumptions are true. Today’s WANs typically carry voice and video (as well as data). The definition of a WAN site has grown and expanded, to encompass not only traditional office buildings, but also unstaffed data centers, micro-branch offices and even individuals working from home or the road. Employees are increasingly distributed in ever-smaller offices (with roughly 90% working somewhere other than at headquarters).

And most critically, employees have come to expect that wherever they are— whether a “traditional” office/WAN site, in telecommuting offices, or even out in the field—they will have access to the same applications and services as anyone else with the same level of performance.

Fortunately, the same architecture that sustained companies for the past decade is also well-equipped to meet the expectations of that increasing percentage of employees residing in the “anywhere office”.

The “Anywhere Office” What is the “anywhere office”? Nemertes defines seven basic categories of “non-traditional” workplaces (noting again, that in some companies, these can

comprise the majority of workplaces). These include:

 Teleworkers (those that work from home either part-time or fulltime)  Small offices (those with under 10 employees)  Branch offices (roughly 10-50 employees)  New office launches (offices that have been opened in remote geographies in advance of the availability of traditional voice and data services)  Road warriors (employees who largely work from hotels and other public sites)  Customer site workers (employees such as consultants who primarily work for long stretches of time from other companies’ networks)  Field force workers (employees whose primary connectivity for both voice and data is wireless).

Strictly speaking, branch offices aren’t “new”—many frame relay sites in the 1990s met this definition—but branch offices have changed character over the past few years. These days, they’re significantly more likely to have no onsite IT support, and require integrated voice, data, and security services.

As noted, MPLS-based services can enhance the quality and reliability of all these flavors of “anywhere office,” although the mechanics of how each type of site is connected to the MPLS “cloud” varies by type of site. Before discussing design specifics, though, it makes sense to first briefly consider the bandwidth, security, 3 ©Nemertes Research 2009 www.nemertes.com  888-241-2685 DN0702

and wireless requirements of users at each type of site. (Please see Figure 1:

Anywhere Office Requirements, Page 4.) When it comes to bandwidth requirements, a good rule of thumb is that with rare exceptions, multiuser sites require more bandwidth than individuals. The exact amount of bandwidth depends on the specific mix of current and future applications, and it’s also important to note that bandwidth requirements aren’t a straight multiple of user count ( a site with 10 users doesn’t require 10 times the bandwidth of a single user).

When it comes to security, the main concern is whether the user is connecting via a public or private network, with public-network users requiring a greater degree of security (such as client VPN software). And finally, wireless connectivity depends heavily on use cases. In general, teleworkers don’t require wireless connectivity (although home wireless LANs have become increasingly popular). Nor do customer-site workers, who typically use the higher bandwidths of wired connections at customer sites. Field force workers and road warriors, in contrast, almost always require wireless connectivity.

–  –  –

Figure 1: Anywhere Office Requirements MPLS Architectures How do MPLS-based services provide connectivity for each of these types of workers? The basic architecture is an MPLS core connecting with the anywhere office sites, either directly or via the networks to which those sites or users connect.

4 ©Nemertes Research 2009 www.nemertes.com  888-241-2685 DN0702 A good way to think of this design is as a hybrid, or enhanced, MPLS architecture: Most branch offices, whether new, small, or traditional, can connect directly into the MPLS cloud. Depending on capacity required, the access circuit can be anything from DSL to a T1 pipe to nXT1 to Ethernet.

–  –  –

Figure 2: MPLS Core Architecture The device at the user’s site is typically an MPLS-capable CE (customer edge) router that prioritizes packets as they leave the site. That means that as for any MPLS site, the IT team defines appropriate classes of service, and determines which applications fall within each class. The IT team then negotiates with the carrier to define how much of the access pipe is dedicated to each class of service, and how that service quality is mapped and supported end-to-end in network.

Not all users are able to connect directly, however. In some cases, teleworkers (and often smaller branch-office sites) may connect to the MPLS cloud via the Internet. This means the IT team selects an ISP for those sites, and the ISP connects to the MPLS cloud via peering connection between the ISP and the MPLS provider. (If the ISP and the MPLS provider are the same company, this peering point is internal to the carrier’s network). The big difference between this and the previous scenario is that QoS isn’t honored end-to-end—the Internet connection to the user’s site isn’t able to support MPLS QoS—although IT may deploy home/edge routers with QoS capabilities to prioritize traffic leaving the site.

5 ©Nemertes Research 2009 www.nemertes.com  888-241-2685 DN0702 It is also possible for the carrier to provide “security-in-the-cloud” services that deliver enhanced security to these sites. (Security isn’t the only “cloud service” that this architecture can deliver, as we’ll discuss below). Typically IT can deploy VPN encryption technologies such as SSL or IPsec to individual users at these sites to ensure privacy.

Users connecting from a customer site have a slightly more complex challenge. Typically the customer site is not connected to the MPLS cloud—or rather, the customer may be connected to its own MPLS network, but not that of the user’s company. In this case, the user has two choices for connectivity: use the customer’s Internet connection (properly protected via IPsec or SSL) or use a mobile wireless service.

Finally, mobile workers can connect to the MPLS network via mobile services. Ideally these will be relatively high-bandwidth services, such as 3G services or Long Term Evolution (coming out in January 2010). As with Internet connectivity, the mobile network connects to the MPLS carrier’s MPLS cloud either via a peering arrangement (if they are two separate carriers), or via internal connectivity inside the carrier’s network.

Cloud Communications Services

It might be obvious from the discussion so far Internet-based access to MPLS services has one big drawback: lack of end-to-end QoS. The mobile networks and Internet connectivity that links in some of the “anywhere offices” lack the ability to deliver QoS once outside the MPLS cloud. So what’s the benefit of using MPLS?

There are two benefits, primarily. First is that MPLS-based security and QoS can be deployed across as much of the WAN as possible. Although obviously QoS and security can’t protect traffic once it’s left the MPLS cloud, this architecture enables the protection for the greatest possible percentage of the traffic path. Second, it ensures policy consistency: If certain types of traffic need to be handled in a certain way (regardless of where it initiates or terminates), IT practitioners can set and manage those policies for all traffic. (Again, enforcement can only occur on the MPLS portions of the traffic path—but the alternative is no policy and no enforcement).

For these reasons, the MPLS-based architecture provides a platform that enables consistent delivery of advanced communications services such as VOIP and unified communications applications (or at least, as consistent as possible)..

For many companies, deploying MPLS-based services was the first step in the long-term communications strategy. Tying in remote sites and “anywhere offices”, as discussed above, represents the second step. And the third step is using this architecture as a platform across which to deliver a constellation of communications services, including voice, video, and collaboration.

6 ©Nemertes Research 2009 www.nemertes.com  888-241-2685 DN0702 For most organizations, the single largest driver for bandwidth growth over the next few years is video (and in particular, telepresence), with 36% of companies saying video is a top driver. Next up? Collaboration applications, with 29% citing these apps as bandwidth drivers. The third-most-popular driver is multimedia applications, cited by 25% of companies.

Pages:   || 2 |

Similar works:

«3RD INTERNATIONAL CONFERENCE ON THE CHURCH OF THE EAST IN CHINA AND CENTRAL ASIA Cross on the Jingjiao Stone Pillar, Luoyang/China (9th century) June 4-9, 2009 Salzburg, Austria 第三届中国和中亚景教研究国际学术研讨会 Conference Organizers: Dietmar W. Winkler Li Tang Regina Augustin (management support) Sponsoring Bodies: Mayr-Melnhof-Institut für den christlichen Osten, Salzburg Österreichisches Bundesministerium für Wissenschaft und Forschung Universität Salzburg,...»

«Table of Contents Title Page Copyright Page Dedication Foreword Preface SECTION I AT THE BEGINNING CHAPTER 1 My Hair Stood on End CHAPTER 2 We Must Be Ruthless SECTION II PLAYING CATCH-UP CHAPTER 3 The Penkovsky Era CHAPTER 4 Beyond Penkovsky CHAPTER 5 Bring in the Engineers CHAPTER 6 Building Better Gadgets SECTION III IN THE PASSING LANE CHAPTER 7 Moving Through the Gap CHAPTER 8 The Pen Is Mightier Than the Sword (and Shield) CHAPTER 9 Fire in the Arctic CHAPTER 10 A Dissident at Heart...»

«TM The Scrum Guide The Definitive Guide to Scrum: The Rules of the Game July 2016 Developed and sustained by Ken Schwaber and Jeff Sutherland Table of Contents Purpose of the Scrum Guide Definition of Scrum Scrum Theory Scrum Values The Scrum Team The Product Owner The Development Team The Scrum Master Scrum Events The Sprint Sprint Planning Daily Scrum Sprint Review Sprint Retrospective Scrum Artifacts Product Backlog Sprint Backlog Increment Artifact Transparency Definition of “Done” End...»

«      Education in American Prisons: A Review of the Literature Ryan McNamara LS 400 California State University Monterey Bay Dr. Linda Bynoe May 20, 2010 Education in American Prisons                                            1  Table of Contents Content Page Number Acknowledgements 2 Capstone Proposal 3 CSUMB Reflection 6 Capstone Cover Page 13 Abstract 14 Introduction 15 Methodology 17 History 18 Theory 24 Current Research 27 Findings 35...»

«TEE UNEASY DOCTRINAL COMPROMISE OF THE MISAPPROPRIATION THEORY OF INSIDER TRADING LIABILITY M. BREEN HAIRE* INTRODUCTION Between 1973 and 1978, James Newman, a New York securities trader, participated in a scheme for which he later found himself in a considerable amount of trouble.' During that time, his co-conspirator Jacques Courtois was employed at an investment bank, where he frequently received advance information about upcoming mergers and acquisitions. He would pass this information on...»

«ETSI TS 100 394-4-12 V1.1.1 (2000-10) European Standard (Telecommunications series) Terrestrial Trunked Radio (TETRA); Conformance testing specification; Part 4: Protocol testing specification for Direct Mode Operation (DMO); Sub-part 12: Test Suite Structure and Test Purposes (TSS&TP) for Repeater type 2 2 ETSI TS 100 394-4-12 V1.1.1 (2000-10) Reference DTS/TETRA-02009-4-12 Keywords DMO, protocol, radio, testing, TETRA, TSS&TP, TTCN ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex...»

«Picker, Antitrust Winter, 2016 Page 283 Federal Trade Commission v. Staples, Inc. 970 F.Supp. 1066 (D.D.C. 1997) THOMAS F. HOGAN, District Judge. Plaintiff, the Federal Trade Commission (“FTC” or “Commission”), seeks a preliminary injunction pursuant to Section 13(b) of the Federal Trade Commission Act, 15 U.S.C. § 53(b), to enjoin the consummation of any acquisition by defendant Staples, Inc., of defendant Office Depot, Inc., pending final disposition before the Commission of...»

«Analytical Grids on the application of State aid rules to the financing of infrastructure projects Version: September 2015 Publication 21/9/2015 This series of staff working documents contains the Analytical grids on the application of State aid rules to the public financing of infrastructure projects. Introduction Grid No 1: Broadband network infrastructures Grid No 2: Construction of airport infrastructures Grid No 3: Construction of port infrastructures Grid No 4: Research development and...»

«WIR SIND DER 12. MANN! Immer zur Stelle und voll natürlicher Energie. Wir sind Fan des Troisdorfer Sports mit seinen über 70 Vereinen. Und Fairplay ist unser Heimvorteil. www.stadtwerke-troisdorf.de Terminkalender HTC Terminkalender Datum Tag Uhrzeit Veranstaltung 11.01.2015 So. 11:00 Neujahrsfrühschoppen im Clubhaus 06.02.2015 Fr. 19:00 HTC Treff 22.02.2015 So. 11:00 Mitgliederversammlung 13.03.2105 Fr. 19:00 HTC Treff 08.04. bis Mi.Hockeycamp, Anlage Carl-Diem-Str. 10.04.2015 Fr....»

«APECS Annual Report 2015-2016 1 October 2015 – 30 September 2016 APECS Annual Report 2015-2016 1 Executive Summary Welcome to the APECS annual report for 2015-2016. Inside you will find a wealth of information about what we have been doing the last year, from workshops to webinars. One of the key tasks for APECS this year was to develop a five-year strategic plan based on the recommendations provided by the organizational review committee. The APECS Strategic Plan for 2016-2020 outlines key...»

«A Report on Migrant Children & Child Labourers and Seafood Processing in Thailand’s Fishing Industry Produced by terre des hommes Germany and Labour Rights Promotion Network Foundation (LPN) A Report on Migrant Children & Child Labourers and Seafood Processing in Thailand’s Fishing Industry Produced by terre des hommes Germany and Labour Rights Promotion Network Foundation (LPN) A Report on Migrant Children & Child Labourers in Thailand’s Fishing and Seafood Processing Industry Team...»

«MINUTES OF THE REGULAR MEETING OF THE WYTHEVILLE TOWN COUNCIL HELD IN THE COUNCIL CHAMBERS ON MONDAY, JULY 13, 2015, AT 7:00 P.M. Members present: Trenton G. Crewe, Jr., Jacqueline K. King, William B. Weisiger, H. Judson Lambert, Thomas F. Hundley Others present: Town Manager C. Wayne Sutherland, Jr., Assistant Town Manager Stephen A. Moore, Town Clerk Sharon G. Corvin, Travis J. Wells, Karen Wells, Danny Gordon with WYVE-AM/WXBX-FM/WLOY-AM, Police Officer Darren Umberger RE: CALL TO ORDER,...»

<<  HOME   |    CONTACTS
2016 www.dissertation.xlibx.info - Dissertations, online materials

Materials of this site are available for review, all rights belong to their respective owners.
If you do not agree with the fact that your material is placed on this site, please, email us, we will within 1-2 business days delete him.