Foreword

In 1998, Juniper Networks launched its first product, the M40 router, and in doing so sparked a period of innovation in IP routing that continues to accelerate. Although the M40 was designed to carry Internet traffic for Internet service providers (ISPs), the benefits of IP networking were becoming apparent to other companies as well, and a short time later Juniper began to build routers with the specific goals of the rapidly developing IP business network market in mind.

The book you’re holding exists to help you understand and implement the most critical elements of business networking using Juniper Networks routers running the JUNOS operating system. JUNOS contains a set of powerful tools that allow intelligent policies to replace large amounts of basic configuration, which gives the engineer a brilliantly practical way to deploy services beyond simple routing. JUNOS represents the most valuable contribution to networking that Juniper has made: it’s reliable, flexible, secure, and simple to use, and an increasing numbers of businesses are finding that these qualities are compelling enough to move to Juniper and away from legacy “first-generation” routers and their less capable operating systems.

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