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Authorized Self-Study Guide Building Cisco Multilayer Switched Networks (BCMSN) by Erum Frahim - CCIE No. 7549, Balaji Sivasubramanian, Richard Froom - CCIE No. 5102

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Introduction

Over the past several years, switching has evolved from simple Layer 3 switches to switches supporting Layer 4 through Layer 7 features such as, server load balancing, URL inspection, firewalls, VPNs, access-based control, and so on with large port densities. The multilayer switch has become an “all-in-one” component of the network infrastructure. As a result of this evolution, enterprise and service providers are deploying multilayer switches in place of multiple network components such as routers and network appliances. Switching is no longer a part of the network infrastructure; it is now the network infrastructure, with wireless as the latest evolution.

As enterprises, service providers, and even consumers deploy multilayer switching, ...

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