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.

• 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

Contents

1. The Internet, Routing, and BGP
2. IP Addressing and the BGP Protocol
3. Physical Design Considerations
4. IP Address Space and AS Numbers
5. Getting Started with BGP
6. Traffic Engineering
7. Security and Integrity of the Network
8. Day-to-Day Operation of the Network
9. When Things Start to Go Down: Troubleshooting
10. BGP in Larger Networks
11. Providing Transit Services
12. Interconnecting with Other Networks