Alcatel 7450 Ethernet Service Switch Release 1.0
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MPLS Vpns: Layer 2 Or Layer 3? Understanding the Choice
#128 Page: 1 of 6 TECHNOLOGY WHITE PAPER MPLS VPNs: Layer 2 or Layer 3? Understanding the Choice Tim Wu, Riverstone Networks ABSTRACT Since there’s been data networking, there’s been a debate between switched and routed architectures — stated in OSI terms, between performing functions at Layer 3 or Layer 2. Today, we see it again surfacing as network architects consider the design of Virtual Private Networks (VPNs) that take advantage of Multi-Protocol Label Switching (MPLS). The question is, when are MPLS VPNs better implemented at Layer 3, using BGP-based VPNs, and when at Layer 2, using MPLS tunneling technologies? The goal of this paper is to explain, in detail, what underlies the choice between Layer 2 and Layer 3 MPLS VPNs. Neither will always be the "right" choice for every service provider — the nature of existing network architectures and desired service offerings are what ultimately decide the matter. And, of course, some service providers may deploy both types of VPN, or salutary combinations of the two technologies. For many (though not all) carriers, the complexity and expense of a Layer 3 MPLS VPN will be overkill. Layer 3 MPLS VPNs will likely remain most appealing to Internet Service Providers that already use BGP extensively and have already deployed high-end IP/MPLS routing equipment at the edge. However, for carriers with existing Layer 2 VPN deployments or those accustomed to delivering transport services, Layer 2’s MPLS "overlay" model should prove much more attractive. This follows because such carriers are unlikely to be interested in the degree of IP routing and (more to the point) high-end IP-equipment expenditures that Layer 3 VPNs call for. -
Frame Relay & Ethernet
# 130 Page: 1 of 11 TECHNOLOGY WHITE PAPER Frame Relay & Ethernet Coexistence: Supporting Legacy and New Services with a Single MPLS Infrastructure Timothy Wu, Riverstone Networks ABSTRACT Why deploy Multiprotocol Label Switching (MPLS) in metropolitan area networks? This paper introduces an important reason: the integrated support of existing Frame Relay deployments with new Ethernet services. To date, much attention has been focused on MPLS’ role in traffic engineering and creating private business networks, or VPNs. The third role — integrating Frame Relay and Ethernet services — may prove equally significant over the long run. The goal of this paper is to explain how MPLS supports Ethernet/Frame Relay integration, and why this is an important advantage for service providers. The significance of Frame Relay/Ethernet integration must be understood in economic, not technological, terms. Frame Relay (and by this we mean Frame services backed by ATM aggregation) represents the mainstream of modern business data networking, with nearly 2 million deployed ports and approximately $13 billion in global revenue. Metro Ethernet, on the other hand, is the consensus choice for the next generation of business networking, based primarily on its revolutionary bandwidth and easy compatibility with LAN Ethernet. This places a heavy focus on the technology that can bridge the gap between today’s Frame Relay and tomorrow’s Ethernet. The apparent answer is an increasingly popular MPLS tunneling technology commonly referred to as "Martini tunneling." Over the last year, the Martini Draft has emerged as the industry standard for tunneling various Layer 2 protocols over an MPLS network. Riverstone Networks has implemented the Martini approach in the RS router family. -
Riverstone Networks Product Reference Guide
Product Reference Guide Bandwidth with Brains™ Company Background Table of Contents CONTENTS Riverstone Networks builds routers for Metropolitan Area Networks. Riverstone is Company Background 1 the only Internet infrastructure vendor focusing exclusively on the needs of carriers Overview of Competitive Positioning 3 in metropolitan area networks. Riverstone provides routing solutions for every segment Product Line Overview 7 of the metro network, from building access and metro aggregation to the data center Product Specifications and the Internet core edge. Riverstone’s Ports/Line Cards per Chassis 9 routers are optimized to help service RS Family Matrix 11 providers deliver value-added services in COMPANY BACKGROUND COMPANY the metro environment. The company’s Access Routers customer base includes some of the largest RS 1000/3000 13 and most sophisticated carriers in the world, including Verizon, Qwest, and British Telecom, Aggregation Routers as well as emerging service providers such RS 8000/8600 17 as Telseon and Intellispace. RS 16000 21 RS 38000 25 Founded in 1996, Riverstone is based in Santa Clara, California, and currently has Carrier Class Edge Access Solution sales offices in North and South America, ES 500 29 Europe, and Asia. The company employs more than 500 people, with about half of Management Software these employees devoted to engineering RapidOS™ Management Center 31 and product development. Riverstone is listed on the Nasdaq Stock Market and Glossary 33 trades under the symbol RSTN. Riverstone Parts List 39 Riverstone Contact Information 42 1 www.riverstonenet.com 2 Overview of OVERVIEW OF COMPETITIVE POSITIONING Competitive Positioning Industry Background highly stable implementations of BGP-4, Services Riverstone Differentiators Service providers today confront severe OSPF, and IS-IS have been certified by Tier 1 economic challenges. -
Lucent Technologies Inc. (Exact Name of Registrant As Specified in Its Charter)
BOWNE INTEGRATED TYPESETTING SYSTEM Site: BOWNE OF NEW YORK Phone: (212)924-5500 Operator: BNY99999T Date: 22-JAN-2007 10:37:45.81 Name: ALCATEL LUCENT [E/O] CRC: 30778 BNY Y27905 001.00.00.00 0/2 Queue: BNY_CPS *Y27905/001/2* Description: FORM 10-K EDGAR 2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED SEPTEMBER 30, 2006 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO COMMISSION FILE NO.: 001-11639 LUCENT TECHNOLOGIES INC. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE 22-3408857 (STATE OR OTHER JURISDICTION OF (I.R.S. EMPLOYER IDENTIFICATION NO.) INCORPORATION OR ORGANIZATION) 600 MOUNTAIN AVENUE, MURRAY HILL, NEW JERSEY 07974 (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE) REGISTRANT’S TELEPHONE NUMBER, INCLUDING AREA CODE: 908-582-8500 0/2 SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: None. Date: 22-JAN-2007 10:37:45.81 SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes No 001.00.00.00 Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes No Operator: BNY99999T Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports),Y27905 and (2) has been subject to such filing requirements for the past 90 days.