Implementation Modes

Tunneling + VPN Management

In this mode, the VPN architecture comprises the following parts:

• VPN tunnels: establishment of tunnels

• VPN management

  • Deployment of network management

  • Accounting

  • QoS

Tunneling + VPN Management + VPN Signaling Protocol

In this mode, the VPN architecture comprises the following parts:

• VPN tunnels: establishment of tunnels

• VPN management

  • VPN configuration management

  • VPN member management

  • VPN attribute management

  • VPN automatic configuration

• VPN signaling protocol: exchange and share of VPN resources between CEs on a VPN

Instantiation

In instantiation mode, each VPN on Layer 2 and Layer 3 is instantiated, and instances of private forwarding information of each VPN are established. Besides tunnel management, an instantiated VPN also performs member discovery, member management, and automatic configuration.

This mode is adopted by L3VPNs based on the relevant standards.

This chapter briefly describes VPN implementation. For more information, see the description of related features in other chapters of this document.