Layer 3 VPN Overview
The JUNOS software implements Layer 3 Border Gateway Protocol/Multiprotocol Label Switching (BGP/MPLS) virtual private networks (VPNs) as defined in Request for Comments (RFC) 2547 and Internet draft BGP/MPLS VPNs, draft-rosen-rfc2547bis (also referred to as RFC 2547bis). This chapter discusses the following topics that provide background information about Layer 3 VPNs:
- Layer 3 VPN Overview
- Layer 3 VPN Standards
- Layer 3 VPN Attributes
- VPN-IPv4 Addresses and Route Distinguishers
- IPv6 Layer 3 VPNs
- VPN Routing and Forwarding Tables
- Route Distribution within a Layer 3 VPN
- Forwarding across the Provider's Core Network
- Routing Instances for VPNs
- Multicast over Layer 3 VPNs