BGP - Building Reliable Networks with the Border Gateway Protocol

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by: Iljitsch van Beijnum

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On-line Price: $72.00 (includes GST) Paperback w/ Website package 288 15%Off Retail Price You save: $13.00 Please call us to check availability	Retail Price: $85.00 Publisher: O'REILLY,Sep-2002 Category: COMMUNICATION PROTOCOLS Level: I/A ISBN: 0596002548 ISBN13: 9780596002541
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Full Description

Border Gateway Protocol (BGP) is the routing protocol used to exchange routing information across the Internet. It makes it possible for ISPs to connect to each other and for end-users to connect to more than one ISP. BGP is the only protocol that is designed to deal with a network of the Internet's size, and the only protocol that can deal well with having multiple connections to unrelated routing domains.

  This book is a guide to all aspects of BGP: the protocol, its configuration and operation in an Internet environment, and how to troubleshooting it. The book also describes how to secure BGP, and how BGP can be used as a tool in combating Distributed Denial of Service (DDoS) attacks. Although the examples throughout this book are for Cisco routers, the techniques discussed can be applied to any BGP-capable router.

  The topics include:

          Requesting an AS number and IP addresses

  Route filtering by remote ISPs and how to avoid this

  Configuring the initial BGP setup

  Balancing the available incoming or outgoing traffic over the available connections

  Securing and troubleshooting BGP

  BGP in larger networks: interaction with internal routing protocols, scalability issues

  BGP in Internet Service Provider networks

      The book is filled with numerous configuration examples with more complex case studies at the end of the book to strengthen your understanding. BGP is for anyone interested in creating reliable connectivity to the Internet.

Table of Contents

Preface

  1. The Internet, Routing, and BGP

          Topology of the Internet

          TCP/IP Design Philosophy

          Routing Protocols

          Multihoming

  2. IP Addressing and the BGP Protocol

          IP Addresses

          Interdomain Routing History

          The BGP Protocol

          Multiprotocol BGP

          Interior Routing Protocols

  3. Physical Design Considerations

          Availability

          Selecting ISPs

          Bandwidth

          Router Hardware

          Failure Risks

          Building a Wide Area Network

          Network Topology Design

  4. IP Address Space and AS Numbers

          The Different Types of Address Space

          Requesting Address Space

          Renumbering IP Addresses

          The AS Number

          Routing Registries

          Routing Policy Specification Language

  5. Getting Started with BGP

          Enabling BGP

          Monitoring BGP

          Clearing BGP Sessions

          Filtering Routes

          Internal BGP

          The Internal Network

          Minimizing the Impact of Link Failures

          eBGP Multihop

  6. Traffic Engineering

          Knowing Which Route Is Best

          Route Maps

          Setting the Local Preference

          Manipulating Inbound AS Paths

          Inbound Communities

          BGP Load Balancing

          Traffic Engineering for Incoming Traffic

          Setting the MED

          Announcing More Specific Routes

          Queuing, Traffic Shaping, and Policing

  7. Security and Integrity of the Network

          Passwords and Security

          Software

          Protecting BGP

          Denial-of-Service Attacks

  8. Day-to-Day Operation of the Network

          The Network Operations Center

          NOC Hardware Facilities

          SNMP Management

          Router Names

          General IP Network Management

  9. When Things Start to Go Down: Troubleshooting

          Keeping a Clear Head

          Managing the Troubleshooting Process

          Dealing with Service Providers

          Physical and Datalink Layer Problems

          Routing and Reachability Problems

          Black Holes

          DNS Problems

  10. BGP in Larger Networks

          Peer Groups

          Using Loopback Addresses for iBGP

          iBGP Scaling

          Dampening Route Flaps

          OSPF as the IGP

          Traffic Engineering in the Internal Network

          Network Partitions

  11. Providing Transit Services

          Route Filters

          Communities

          Anti-DoS Measures

          Customers with Backup Connections

          Providing IPv6 and Multicast

  12. Interconnecting with Other Networks

          Peering

          Internet Exchanges, NAPs, and MAEs

          Connecting to an Internet Exchange

          Connecting to More Exchange Points

          Rejecting Unwanted Traffic

          IX Subnet Problems

          Talking to Other Network Operators

          Exchange Point Future

  A. Cisco Configuration Basics

  B. Binary Logic, Netmasks, and Prefixes

  C. Notes on the IPv4 Address Space

  Glossary

  Index