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CCNP Routing and Switching Quick Reference Library: ROUTE 300-101, SWITCH 300-115, and TSHOOT 300-135 Quick References by Brent Stewart, Denise Donohue

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Chapter 7. BGP and Internet Connectivity

Planning an Internet Connection

Consider your company’s needs when planning your Internet connection. What link type and bandwidth will support all the external connections plus your internal users? Is the company considering any hosted or cloud services that would drive additional bandwidth needs? Will you use static or dynamic routing? How much redundancy will you require, including both link and ISP redundancy?

Types of ISP Connections

A site with a single Internet service provider (ISP) connection is single homed, which is sufficient for a site that does not depend heavily on Internet or WAN connectivity. Either use static routes or advertise the site routes to the ISP and receive a default route ...

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