MPLS Layer 3 VPN Explained

Lessons Discussion
94

Hello Fabrice

The specific benefits as described by Cisco are the following:

Benefits
The MPLS VPN ID feature provides the following benefits:

  • Remote access applications, such as the Remote Authentication Dial-In User Service (RADIUS) and Dynamic Host Configuration Protocol (DHCP), can use the MPLS VPN ID feature to identify a VPN. RADIUS can use the VPN ID to assign dial-in users to the proper VPN, based on each user’s authentication information.

  • A VPN is private and uses a private address space that might also be used by another VPN or by the Internet. The IP address used in a VPN is only significant to the VPN in which it exists. The VPN ID identifies the VPN to which the IP address belongs.

  • The MPLS VPN ID feature standardizes the VPN identification method, as described in RFC 2685.

These were obtained from the following documentation:

I hope this has been helpful!

Laz

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