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Chapter 6, "Routing Concepts"

--This chapter discusses static and dynamic routing, path determina-

tion, and how routing protocols use metrics to determine the best path. Also discussed are route redistri-
bution between dissimilar protocols, routing algorithms, enabling and disabling split horizon for IP
networks, Cisco Express Forwarding, host routing, and Tag Switching.

Chapter 7, "OSPF"

--This chapter examines the Open Shortest Path First (OSPF) protocol, OSPF net-

work types, and categories. You'll see how OSPF propagates link state advertisements with summariza-
tion and area definition. You'll read about the network design that maximizes stability and scalability,
design models for the OSPF backbone, IGRP routing characteristics, and how the IGRP metric works.
You'll also read about EIGRP and the enhancement features that make it superior to IGRP. Other topics
include OSPF protocols and area assignments, OSPF summarization and scalability, designated and
backup designated routers, and determining OSPF convergence.

Chapter 8, "Desktop Design"

--This chapter discusses the AppleTalk protocol and considerations to

remember when designing AppleTalk networks. It also covers Novell's IPX routing and issues that
relate to how SAP and RIP broadcasts are controlled on the network. You'll see an examination of a cli-
ent's requirements and read about constructing a design solution using Windows Networking. RTMP,
EIGRP convergence, IPX Protocol, IPX Routing, and encapsulation types are discussed, as well as Net-
Ware Link Services Protocol and IPX/IP gateways.

Chapter 9, "WAN Design Considerations"

--This chapter discusses the various options available and

helps you choose the optimum technology to use. It covers the goals for designing the WAN core,
including redundancy, partitioning, load balancing, and convergence. You'll read about the various per-
formance-related options available in Cisco IOS in terms of design trade-offs such as compression,
queuing, and Quality of Service (QoS). You'll also read about managing the backbone with single pro-
tocol versus multiprotocol, as well as tunneling features.

Chapter 10, "X.25/Frame Relay Topologies"

--This chapter provides a brief overview of the X.25

protocol, which is used extensively in areas outside the United States. You'll see where it fits into
today's networks. You'll read about X.25 over TCP/IP (XOT), X.25 over ISDN, hub and spoke Frame
Relay, common terms used with Frame Relay, and Frame Relay service characteristics. Additionally,
oversubscription, determining the measurement interval, split horizon, and Frame Relay interaction
with routing protocols are discussed.

Chapter 11, "Remote Access"

--This chapter reviews analog and ISDN services available today, as

well as the common methods of accessing remote sites, remote node and remote control. Also covered
are options for remote routers and access servers, functions and reference points used with ISDN, ISDN
Primary Rate Interface, IP Unnumbered and where to use it, Point-to-Point Protocol, HDLC and LAPB,
multilink PPP, and where various remote-office routers fit into the network design.

Chapter 12, "SNA Technoogies"

--This chapter discusses the types of gateways available in the SNA

arena, the LLC2 and SDLC connection-oriented protocols, SNA frame types, the SNA model, subarea
nodes, peripheral nodes, establishing LU-LU sessions, boundary nodes, dependent and independent LU
sessions, explicit and virtual routing, and downstream physical units.

Chapter 13, "SNA Interworking"

--This chapter discusses serial tunneling of SDLC (STUN) and

some of the transport protocols for the SDLC frames, the evolution of DLSw+ and some of its options,
Advanced Peer-to-Peer Networking (APPN), Channel Interface Processor (CIP) and where it fits into
the SNA design, CIP features and terminology, Cisco enhanced DLSw+ features, choosing a transport
protocol for DLSw+, and avoiding timeouts with LLC2.

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