Document Organization

This manual is divided into several parts. Each part describes a major functional area of the JUNOS software, and the individual chapters within a part describe the software commands of that functional area.

This manual contains the following parts and chapters:

• Preface, About This Manual (this chapter), provides a brief description of the contents and organization of this manual and describes how to contact customer support.
• Part 1, "VPN Overview," provides an overview of Layer 2 and Layer 3 VPNs.

• Chapter 1, "VPN Overview," provides common VPN terminology and describes the major differences between Layer 2 and Layer 3 VPNs.

• Part 2, "Layer 2 VPNs," describes how to configure the JUNOS software to support Layer 2 VPNs.

• Chapter 2, "Layer 2 VPN Overview," provides an overview of Layer 2 VPNs.
• Chapter 3, "Layer 2 VPN Configuration Guidelines," describes the minimum and optional configurations for Layer 2 VPNs.
• Chapter 4, "Layer 2 VPN Configuration Example," provides a configuration example for a Layer 2 VPN.
• Chapter 5, "Summary of Layer 2 VPN Configuration Statements," describes the statements used to configure Layer 2 VPNs.

• Part 3, "Layer 3 VPNs," describes how to configure the JUNOS software to support Layer 3 VPNs.

• Chapter 6, "Layer 3 VPN Overview," provides an overview of Layer 3 VPNs.
• Chapter 7, "Layer 3 VPN Configuration Guidelines," describes the minimum and optional configurations for Layer 3 VPNs.
• Chapter 8, "Layer 3 VPN Configuration Troubleshooting Guidelines," provides guidance for troubleshooting Layer 3 VPNs.
• Chapter 9, "Layer 3 VPN Configuration Examples," provides configuration examples for Layer 3 VPNs.
• Chapter 10, "Layer 3 VPN Internet Access Examples," provides configuration examples that show how to configure Internet access for Layer 3 VPNs.
• Chapter 11, "Summary of Layer 3 VPN Configuration Statements," describes the statements used to configure Layer 3 VPNs.

• Part 4, "Interprovider and Carrier-of-Carriers VPNs," describes how to configure the JUNOS software to support interprovider and carrier-of-carriers VPNs.

• Chapter 12, "Interprovider and Carrier-of-Carriers VPNs Overview," provides an overview of interprovider and carrier-of-carriers VPNs.
• Chapter 13, "Interprovider and Carrier-of-Carriers Configuration Guidelines," describes the minimum and optional configurations for interprovider and carrier-of-carriers VPNs.
• Chapter 14, "Configuration Examples for Interprovider and Carrier-of-Carriers VPNs," provides examples that show how to configure interprovider and carrier-of-carriers VPNs.
• Chapter 15, "Summary of the Interprovider and Carrier-of-Carriers Configuration Statement," describes the statement used to configure interprovider and carrier-of-carriers VPNs.

• Part 5, "Layer 2 Circuits," describes how to configure Layer 2 circuits.

• Chapter 16, "Layer 2 Virtual Circuit Configuration Guidelines," describes how to configure Layer 2 virtual circuits.
• Chapter 17, "Summary of Layer 2 Circuit Configuration Statements," describes the statements used to configure Layer 2 circuits.

This manual also contains a glossary, a complete index, and an index of statements and commands.