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وبلاگ تخصصی امنیت، شبکه، کامپیوتر و فناوری اطلاعات شرکت ایمن رایان پارسی فردا - Designing Large-Scale IP Internetworks-by CISCO
یکشنبه 1389/06/28  07:17 ق.ظ    ویرایش: یکشنبه 1389/06/28 07:19 ق.ظ

Designing Large-Scale IP Internetworks


This chapter focuses on the following design implications of the Enhanced Interior Gateway Routing Protocol (IGRP), Open Shortest Path First (OSPF) protocols, and the Border Gateway Protocol (BGP):

Network Topology

Addressing and Route Summarization

Route Selection

Convergence

Network Scalability

Security

Enhanced IGRP, OSPF, and BGP are routing protocols for the Internet Protocol (IP). An introductory discussion outlines general routing protocol issues; subsequent discussions focus on design guidelines for the specific IP protocols.


Table Of Contents

Designing Large-Scale IP Internetworks

Implementing Routing Protocols

Network Topology

Addressing and Route Summarization

Route Selection

Convergence

Network Scalability

Memory

CPU

Bandwidth

Security

Enhanced IGRP Internetwork Design Guidelines

Enhanced IGRP Network Topology

Enhanced IGRP Addressing

Enhanced IGRP Route Summarization

Enhanced IGRP Route Selection

Enhanced IGRP Convergence

Enhanced IGRP Network Scalability

Memory

CPU

Bandwidth

Enhanced IGRP Security

OSPF Internetwork Design Guidelines

OSPF Network Topology

Backbone Considerations

Area Considerations

OSPF Addressing and Route Summarization

OSPF Route Summarization

Separate Address Structures for Each Area

Bit-Wise Subnetting and VLSM

Route Summarization Techniques

OSPF Route Selection

Tuning OSPF Metrics

Controlling Interarea Traffic

Load Balancing in OSPF Internetworks

OSPF Convergence

OSPF Network Scalability

Memory

CPU

Bandwidth

OSPF Security

OSPF NSSA (Not-So-Stubby Area) Overview

Using OSPF NSSA

Type 7 LSA Characteristics

Configuring OSPF NSSA

NSSA Implementation Considerations

OSPF On Demand Circuit

Why Use OSPF On Demand Circuit?

OSPF On Demand Circuit Operation

Configuring OSPF On Demand Circuit

Implementation Considerations for OSPF On Demand Circuit

OSPF Over Non-Broadcast Networks

NBMA Mode

Point-to-MultiPoint Mode

BGP Internetwork Design Guidelines

BGP Operation

Internal BGP

External BGP (EBGP)

BGP and Route Maps

Advertising Networks

Redistributing Static Routes

BGP Attributes

AS_path Attribute

Origin Attribute

Next Hop Attribute

Next Hop Attribute and Multiaccess Media

Next Hop Attribute and Nonbroadcast Media Access

Weight Attribute

Local Preference Attribute

Multi-Exit Discriminator Attribute

Community Attribute

BGP Path Selection Criteria

Understanding and Defining BGP Routing Policies

Administrative Distance

BGP Filtering

BGP Peer Groups

CIDR and Aggregate Addresses

Confederations

Route Reflectors

Route Flap Dampening

Summary of BGP

Summary



   


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