VPN Configuration Guidelines

Layer 2 virtual private networks (VPNs), Layer 3 VPNs, and virtual private LAN service (VPLS) use a common infrastructure within JUNOS and common configuration procedures. This chapter describes the configuration steps that are common to Layer 2 VPNs, Layer 3 VPNs, and VPLS. It is best to complete the configuration steps outlined in this chapter regardless of which type of VPN you are configuring before proceeding to the more specific configuration steps described elsewhere in this manual.

The following sections describe the general procedures you need to follow to configure Layer 2 VPNs, Layer 3 VPNs, and VPLS:

• Enable a Signaling Protocol on the PE Routers
• Configure an IGP on the PE and Provider Routers
• Configure an IBGP Session between PE Routers
• Configure a VPN Routing Instance on the PE Routers
• Configure a Virtual-Router Routing Instance
• Configure Graceful Restart
• Rewrite Markers and VPNs

For information on the configuration procedures specific to Layer 2 VPNs, Layer 3 VPNs, and VPLS, see the following configuration chapters:

• Layer 2 VPN Configuration Guidelines
• Layer 3 VPN Configuration Guidelines
• VPLS Configuration Guidelines