L3 multiprotocol label switching (MPLS) VPNs are based on routing tables . They use standard routing protocols, such as BGP, to create route maps and use various add-ons and extensions for the purpose of the L3 VPN, such as route distinguishers and route targets to differentiate and properly handle routes and destinations.
The multiprotocol extensions of BGP used for MPLS VPN services are only defined for BGP-4 as far as I know. So BGP-4 support would be required.
Email your VPN-related questions to email@example.com.
Dig Deeper on WAN technologies and services
Related Q&A from Rainer Enders
Administrators don't have to worry about interoperability; integrated mobile application and device management is the best approach. Continue Reading
Ensuring that the client software itself is up to date is just one of many reasons why it's critical to oversee VPN clients. Continue Reading
To ensure mobile device security, VPN expert Rainer Enders explains that it is crucial to monitor changed states and block software modifications. Continue Reading