layer 3

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Construction Services Firm Solves Connectivity and Large File Printing Issues With D-Link Layer 2 and Layer 3 Switches

The old network at John H. Myers and Son was causing trouble for suppliers, employees and, more importantly, customers. Their low-end routers could not keep up with growing business demands. Blueprints and design images frequently scanned at 50+MB. In addition, the company was looking for a better support relationship with...

Tags: D-Link Systems, Layer 2, Layer 3, Network, Construction Service, Printing, Home Networking, Networking, Personal Technology

Case studies 2008-06-30

The Business Case for Network-Based Layer 3 IP VPNs

Layer 3 Virtual Private Networks VPNs developed in the late 1990s are now delivering secure, reliable office connectivity solutions for various applications of many Fortune 1000 companies. The reasons for the popularity of these network-based IP VPNs are clear: they are now a mature and stable way to interconnect enterprises...

Tags: Business Case, Layer 3, Network, Juniper Networks Inc., IP, Frame Relay, Network Technology, Networking, ATM, Telecommunications

White papers 2007-05-01

Using Linux Guests as Layer 3 Routers Between Guest LAN and Hipersocket LANs

This paper provides a short and simplified example of using a host system IP stack as a IP packet router between two or more network segments. This example network is a common configuration used with Linux on zSeries configurations where a Linux guest is used as a router between a...

Tags: Layer 3, Router, Guest, Sine Nomine Associates, Linux, LANs, Network Technology, Networking, Routers & Switches, UNIX, Operating Systems, Open Source, Software

White papers 2006-04-25

Layer 3 Switching for Secure Networks

The adoption of layer 3 switches with security functionality simplifies network management and reduces cost of ownership and can also provide resiliency. Enterprises also are benefiting from WAN access functionality in Layer 3 boxes, which enables them to be deployed at the network's edge, obviating the need for traditional WAN...

Tags: Secure Networks, Layer 3, Network, CyberPath, Trade-off, Networking

White papers 2005-10-26

Build a scalable, flexible, and highly-available data center

This sample chapter, taken from Cisco Press' Data Center Fundamentals, focuses on three main properties of data center architectures: scalability, flexibility, and high availability. Data centers are rapidly evolving to accommodate higher expectations for growth, consolidation, and security. Although the traditional Layer 2 and Layer 3 designs...

Tags: Layer 2, Data Center, Layer 3, Cisco Systems Inc., Data Centers, Storage, Hardware, Data Management

Book chapters 2005-08-19

MPLS VPNs: Layer 2 or Layer 3? Understanding the Choice

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...

Tags: MPLS VPN, Layer 2, Layer 3, MPLS, VPNs, Networking, Network Security, Telecommunications

White papers 2002-07-05

Layer 3 Switching: An Introduction

This paper is a map through the jungle of internetworking infrastructure, particularly focusing on how Layer 2 switching and Layer 3 routing have combined to form the powerful Layer 3 switching architecture. The paper analyzes Layer 3 switching from both a functional and an operational perspective, helping the reader make...

Tags: Layer 3

White papers 1998-05-01

Layer 3 Switching

This document is a map through the jungle of internetworking infrastructure, particularly focusing on how Layer 2 switching and Layer 3 routing have combined to form the powerful Layer 3 switching architecture. The document analyzes Layer 3 switching from both functional as well as an operational perspective, helping...

Tags: Layer 3

White papers 1998-05-01

Case Study for Layer 3 Authentication and Encryption

This case study explains the basic tasks for configuring a multi-service, extranet Virtual Private Network VPN between a Cisco Secure VPN Client VPN Client and a Cisco IOS networking device gateway. This case study describes IP Security Protocol IPSec tunnelling. It includes the following sections: Case Study Overview, and Site...

Tags: Layer 3, Cisco Systems Inc., VPN Client, Encryption, IPSec, VPNs, Network Security, Networking, Telecommunications, Security

Case studies

Additional Resources

RWmultitool 2 2.0.3 (Mac)

Software architecture based on CoreImageTechnology. Intuitive and simple interface Vertical form factor to adapt to small size monitors and logically grouped functions. Compatible with most RapidWeaver themes RWmultitool will display a list of all images included in a theme and let you choose one for editing. No...

Tags: Apple Macintosh, Image, RWmultitool 2 2.0.3

Software downloads 2009-11-27

RWmultitool 2 Lite 2.0.3 (Mac)

Rwmultitool2 LITE is an abridged version of Rwmultitool2 Full version.Universal Application, based on Mac OSX CoreImage Software architecture based on CoreImageTechnology. Compatible with most RapidWeaver themes RWmultitool will display a list of all images included in a theme and let you choose one for editing. No other software required....

Tags: Apple Macintosh, Image, Rwmultitool2 LITE, Backups

Software downloads 2009-11-27

Peak oil panic? Dubai or not Dubai?

Harry, please ignore the deniersThey will try to quash any voice of reason. I believe they hope to maneuver themselves into a position where they can argue that they should not be affected by the consequences because they don't believe in man-made climate change. Pure selfishness.Keep it coming. We are...

Tags: Food & Beverage, food, oil

Discussion threads 2009-11-26

Gateway DX4300-11

Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.Gateway hasn't fared well with its most recent round of DX-series mainstream retail PCs. Neither the DX4300-03 nor the DX4822-01 received positive marks, and...

Tags: Video cards, LANs, DVD, Consumer electronics, Semiconductors, Network technology, NETWORKING, Gateway Inc., graphics

Product reviews 2009-11-25

Maingear Shift

With its new Shift gaming desktop, Maingear joins the ranks of Alienware, Falcon Northwest, and Velocity Micro in providing its customers a distinctive-looking case you can't get anywhere else. And despite a misstep with the build and a questionable processor choice both of which should be easily remedied, we found...

Tags: Network technology, Most Unique, Maingear, cable, hard drive

Product reviews 2009-11-25

Asus Essentio CG5270-BP004

Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores. The Asus Essentio CG5270-BP004 bears a striking resemblance to a young teenager trying too hard. With its oversized, canted case, it's easy to...

Tags: ASUS

Product reviews 2009-11-24

Microsoft isn't the only one developing a hardware-accelerated browser

It is a dumb idea.WAIT! Firefox and Chrome teams are looking to do the same?What a brilliant idea!I smell a large scale patent war brewingThis will be one that catches everybody's attention, not just the people who work in the industry.I'd bet that Office goes hardware-rendered, tooI'd bet that Office...

Tags: Web browsers, Microsoft Windows, Microsoft Office, IE9, Mozilla Firefox, Microsoft Corp., Microsoft Internet Explorer, hardware, Web browser

Discussion threads 2009-11-24

HP Pavilion P6230y

Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.The $680 Pavilion P6230y is another midrange HP desktop PC that looks good on paper, but can't keep up with the competition in...

Tags: Desktops, LANs, Semiconductors, Network technology, Processors, DVD, HP Pavilion, Hewlett-Packard Co., ASUS, graphics, chip

Product reviews 2009-11-23

Gateway One ZX4800-02

Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.The good news about the Gateway One ZX4800-02: it's not a Nettop. Nope, instead this is a full-fledged, $750 all-in-one desktop, complete with a...

Tags: Keyboards, Desktops, Monitors & displays, Processors, Gateway Inc., desktop

Product reviews 2009-11-20

Gateway DX4822-01

Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.Although we weren't fans of Gateway's midrange Gateway DX4300-03, the $520 DX4822-01 makes a more convincing argument with budget-minded features like a spacious hard...

Tags: Video cards, DVD, Consumer electronics, Semiconductors, Processors, Gateway Inc., Intel Corp.

Product reviews 2009-11-20

Asus Essentio CM5570-AP003

Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.The $480 Asus Essentio CM5570-AP003 is a stripped-down version of the CM5570-AP006 we reviewed in July. It uses the same basic tower but replaces...

Tags: Video cards, Semiconductors, Network technology, DVD, Processors, Consumer electronics, 64-bit, Intel Corp., ASUS, Intel Pentium Dual-Core, graphics, chip

Product reviews 2009-11-20