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Cloud Native Data Center Networking by Dinesh G. Dutt

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Chapter 15. Deploying BGP

Tell me what you need, and I’ll tell you how to get along without it

Scott Adams

This chapter delves into administering the BGP routing protocol. The goal of this chapter is to help network engineers configure BGP in their data center network.

This chapter should help answer questions such as:

  • What are the core configuration concepts of BGP?

  • How do I configure BGP for a Clos network?

  • How does unnumbered BGP work?

  • How do I configure BGP to peer with BGP speakers on hosts such as with Kube-router?

  • How do I configure BGP to gracefully leave the network for scheduled maintenance?

This chapter should also help the network engineer compare and contrast administering BGP across various routing stacks. I’m assuming the reader has either read Chapter 14 or is familiar with the concepts presented in that chapter.

Core BGP Configuration Concepts

We begin our journey by studying the basic concepts of BGP configuration. It consists of the following basic parts:

  • Global BGP configuration, which includes:

    • router-id configuration

    • Neighbor (or peer) configuration

    • Routing policy definitions

    • Timer configuration

  • Neighbor specific configuration, which includes:

    • Non-global Timer configuration

    • Non-address-family specific configuration

  • Address-family specific configuration, which includes:

    • Neighbor specific activation of AFI/SAFI

    • Route advertisment specification

    • Application of routing policy to specific neighbors

Part of the complexity ...

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