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CCNP Routing and Switching direction 300-101 authentic Cert advisor from Cisco Press helps you to be successful at the examination the 1st time and is the one self-study source authorized via Cisco. specialist teacher and best-selling writer Kevin Wallace stocks guidance tricks and test-taking advice, supporting you determine components of weak spot and enhance either your conceptual wisdom and hands-on talents.
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Extra info for CCNP Routing and Switching ROUTE 300-101 Official Cert Guide
Sample text
Then some of the characteristics of routing protocols are presented, to help you decide which routing protocol to use in a specific environment and to help you better understand the nature of routing protocols you find already deployed in a network. The Role of Routing in an Enterprise Network An enterprise network typically interconnects multiple buildings, has connectivity to one or more remote offices, and has one or more connections to the Internet. Figure 1-1 identifies some of the architectural layers often found in an enterprise network design: ■ Building Access: This layer is part of the Campus network and is used to provide user access to the network.
Dot1Q d. 10 From the Library of Alexey Evseenko 10/24/14 3:17 PM 6 CCNP Routing and Switching ROUTE 300-101 Official Cert Guide Foundation Topics Routing Protocol Fundamentals Routing occurs when a router or some other Layer 3 device (for example, a multilayer switch) makes a forwarding decision based on network address information (that is, Layer 3 information). A fundamental question, however, addressed throughout this book, is from where does the routing information originate? A router could know how to reach a network by simply having one of its interfaces directly connect that network.
The chapter then concludes with a look at virtual links. ■ Chapter 8: “The OSPF Link-State Database”: This chapter explains the various LSA types that OSPF uses to construct a link-state database. The process involved in exchanging link-state database routers with neighboring routers is also discussed. ■ Chapter 9: “Advanced OSPF Concepts”: This chapter discusses OSPF route filtering, route summarization, sourcing default route information, and special area types. Then, the chapter concludes with an examination of OSPFv3 and describes how it can be used to route IPv6 networks.