IP VPN-Lite is a product from Nortel (now acquired by Avaya) that provides the ability to run IP Virtual private networks using Multiprotocol BGP (MP-BGP) extensions (based on RFC 4364) across a normal IP backbone infrastructure. Unlike Multiprotocol Label Switching (MPLS) based VPNs, IP VPN-Lite is purely based on an end-to-end IP transport.
While still leveraging the RFC 4364 framework at the control plane level, IP VPN-Lite delivers the same IP VPN capabilities over a IP routed backbone using simple IP in IP encapsulation. IP VPN-Lite differs from RFC 4364 MP-IBGP control plane by using a service IP address instead of a MPLS service label. The service IP address identifies a VRF[disambiguation needed] on a per node basis and is used to carry the VPN traffic across the backbone as part of the outer IP header of the IP in IP encapsulation.
For end-to-end transport, the service IP addresses are used to identify the source and destination VRFs which form the VPN.
Overall, IP VPN-Lite provides support for the following:
- Filtering support (UNI side)
- MP-BGP extensions
- BGP route refresh
- BGP route reflection
- Peering to multiple route reflectors
- Route reflection server (NNI side)
- Full mesh and hub and spoke designs
- Extended community Type 0 and 1
- Import and export route targets and route distinguishers
- IP-BGP extensions
- Equal-cost multi-path routing
- VRF-based ping and traceroute
- UNI packet classification (port, VLAN, IP, VRF, and VPN)
- VRF UNI routing protocols (RIP, OSPF, EBGP)