By Kent Hundley

ISBN-10: 0470429062

ISBN-13: 9780470429068

Via providing the recent carrier Routing Certification software, Alcatel-Lucent is extending their achieve and information to networking pros with a complete demonstration of ways to construct shrewdpermanent, scalable networks. Serving as a “course in a ebook” from Alcatel-Lucent—the international chief in designing and constructing scalable systems—this source pinpoints the pitfalls to prevent while construction scalable networks, examines the main winning options on hand for engineers who're construction and working IP networks, and gives overviews of the net, IP routing and the IP layer, and the perform of establishing the shortest direction first.Note: CD-ROM/DVD and different supplementary fabrics usually are not incorporated as a part of booklet dossier.

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Additional resources for Alcatel-Lucent Scalable IP Networks Self-Study Guide: Preparing for the Network Routing Specialist I (NRS 1) Certification Exam (Self Study Guide Exam 4ao-100)

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The network interfaces layer includes all the hardware that comprises the physical infrastructure of the Internet. The two intermediate layers, the transport layer and Internet Protocol layer, provide a common set of services that are available to all Internet applications and that operate on all the hardware infrastructure of the Internet. The Application Services Layer The application services layer is the layer for the user. This layer only describes network applications. 8 lists some examples of network applications in the “Application services” box.

Routers communicate with each other using dynamic routing protocols to exchange information about the networks they are connected to. This allows routers to make forwarding decisions for the datagrams they receive. In later chapters, you will learn about some key IP routing protocols such as Open Shortest Path First (OSPF) and Border Gateway Protocol (BGP). These topics are covered in much greater detail in later chapters, so for now, all that you need to understand is that routing protocols allow for the delivery of packets from one “hop” or router to the next in a predictable manner.

11, each datagram contains source and destination addresses that identify the end nodes in the network, and as you have seen, every node in an IP network is expected to have a unique IP address. IP uses the services of the underlying network interfaces such as Ethernet or ATM to accomplish the physical transfer of data. The data link layer is the term used to describe the network interfaces used by IP for physically transmitting the data across the network. The units of data transmitted at the data link layer are usually known as frames.

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Alcatel-Lucent Scalable IP Networks Self-Study Guide: Preparing for the Network Routing Specialist I (NRS 1) Certification Exam (Self Study Guide Exam 4ao-100) by Kent Hundley


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