Junos® OS For Dummies®, 2nd Edition

Introduction

Welcome to Junos OS For Dummies. This book provides you with a handy reference for configuring and running Junos software on Juniper Networks products. (We won't bore you with how Junos got here, but you can discover more about Juniper Networks and the evolution of Junos software at www.juniper.net/company.)

More and more, Junos software is being deployed throughout the world running on Juniper Networks platforms designed for switching, routing, and security. You can find it in both the largest and the smallest service provider networks and in the networks at tens of thousands of offices, regional campuses, and data centers of enterprise organizations, as well as in the public sector and on educational campuses.

See whether you can identify with any of the following scenarios:

• In your branch offices: You may be updating your branch gateway with an integrated platform, Voice over IP (VoIP), supporting new users, or upgrading older switching, routing, or security infrastructure.
• In your headquarters or regional office campuses: You may be adding new users or deploying new or deploying VoIP, new web or upgrading older switching and routing infrastructures, or merging or migrating from other operating systems.
• In your metropolitan or wide area networks: You may be transitioning to new optical, Ethernet, or MPLS carrier services; building a new core for your metro, wide area, or data center backbone network; rolling out MPLS; or upgrading an older switching, routing, or ...