Books & Videos

BGP

Building Reliable Networks with the Border Gateway Protocol

By Iljitsch van Beijnum

Publisher: O'Reilly Media

Release Date: March 2010

Pages: 288

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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.

Chapter 1 The Internet, Routing, and BGP
1. Topology of the Internet
2. TCP/IP Design Philosophy
3. Routing Protocols
4. Multihoming
Chapter 2 IP Addressing and the BGP Protocol
1. IP Addresses
2. Interdomain Routing History
3. The BGP Protocol
4. Multiprotocol BGP
5. Interior Routing Protocols
Chapter 3 Physical Design Considerations
1. Availability
2. Selecting ISPs
3. Bandwidth
4. Router Hardware
5. Failure Risks
6. Building a Wide Area Network
7. Network Topology Design
Chapter 4 IP Address Space and AS Numbers
1. The Different Types of Address Space
2. Requesting Address Space
3. Renumbering IP Addresses
4. The AS Number
5. Routing Registries
6. Routing Policy Specification Language
Chapter 5 Getting Started with BGP
1. Enabling BGP
2. Monitoring BGP
3. Clearing BGP Sessions
4. Filtering Routes
5. Internal BGP
6. The Internal Network
7. Minimizing the Impact of Link Failures
8. eBGP Multihop
Chapter 6 Traffic Engineering
1. Knowing Which Route Is Best
2. Route Maps
3. Setting the Local Preference
4. Manipulating Inbound AS Paths
5. Inbound Communities
6. BGP Load Balancing
7. Traffic Engineering for Incoming Traffic
8. Setting the MED
9. Announcing More Specific Routes
10. Queuing, Traffic Shaping, and Policing
Chapter 7 Security and Integrity of the Network
1. Passwords and Security
2. Software
3. Protecting BGP
4. Denial-of-Service Attacks
Chapter 8 Day-to-Day Operation of the Network
1. The Network Operations Center
2. NOC Hardware Facilities
3. SNMP Management
4. Router Names
5. General IP Network Management
Chapter 9 When Things Start to Go Down: Troubleshooting
1. Keeping a Clear Head
2. Managing the Troubleshooting Process
3. Dealing with Service Providers
4. Physical and Datalink Layer Problems
5. Routing and Reachability Problems
6. Black Holes
7. DNS Problems
Chapter 10 BGP in Larger Networks
1. Peer Groups
2. Using Loopback Addresses for iBGP
3. iBGP Scaling
4. Dampening Route Flaps
5. OSPF as the IGP
6. Traffic Engineering in the Internal Network
7. Network Partitions
Chapter 11 Providing Transit Services
1. Route Filters
2. Communities
3. Anti-DoS Measures
4. Customers with Backup Connections
5. Providing IPv6 and Multicast
Chapter 12 Interconnecting with Other Networks
1. Peering
2. Internet Exchanges, NAPs, and MAEs
3. Connecting to an Internet Exchange
4. Connecting to More Exchange Points
5. Rejecting Unwanted Traffic
6. IX Subnet Problems
7. Talking to Other Network Operators
8. Exchange Point Future

Appendix Cisco Configuration Basics
1. IP Configuration Essentials
Appendix Binary Logic, Netmasks, and Prefixes
Appendix Notes on the IPv4 Address Space
Glossary
Colophon

Books & Videos

BGP

Building Reliable Networks with the Border Gateway Protocol

Read on Safari with a 10-day trial

Table of Contents

Chapter 1 The Internet, Routing, and BGP

Topology of the Internet

TCP/IP Design Philosophy

Routing Protocols

Multihoming

Chapter 2 IP Addressing and the BGP Protocol

IP Addresses

Interdomain Routing History

The BGP Protocol

Multiprotocol BGP

Interior Routing Protocols

Chapter 3 Physical Design Considerations

Availability

Selecting ISPs

Bandwidth

Router Hardware

Failure Risks

Building a Wide Area Network

Network Topology Design

Chapter 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

Chapter 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

Chapter 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

Chapter 7 Security and Integrity of the Network

Passwords and Security

Software

Protecting BGP

Denial-of-Service Attacks

Chapter 8 Day-to-Day Operation of the Network

The Network Operations Center

NOC Hardware Facilities

SNMP Management

Router Names

General IP Network Management

Chapter 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

Chapter 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

Chapter 11 Providing Transit Services

Route Filters