Configuration task list

You can configure MP by using VT or MP-group interfaces.

• VT interface

  VT interfaces are used to configure VA interfaces. After bundling multiple PPP links into an MP link, create a VA interface for the MP link to exchange data with the peers.

  Configuring MP by using VT interfaces can involve an authentication process. The device locates the specified VT interface according to the username provided by the peer, and creates a bundle (called VT channel in the system) corresponding to an MP link based on the configuration of the template.

  Multiple bundles can be created on the same VT interface, each of which is an MP link. From the perspective of the network layer, these links form a point-to-multipoint topology.

  The system uses authentication usernames or terminal descriptors for MP bundling to distinguish multiple MP links under one VT interface. The following binding modes are available:

  • authentication—Bundles links by using authentication usernames. Each authentication username corresponds to one bundle. An authentication username refers to the username sent by the supplicant to the authenticator for PAP, CHAP, MS-CHAP, or MS-CHAP-V2 authentication.

  • descriptor—Bundles links by using peer descriptors. Each peer descriptor corresponds to one bundle. A peer descriptor is received from the peer during LCP negotiation and uniquely identifies a device.

  • both—Bundles links by using both the authentication username and peer descriptor.

• MP-group interface

  MP-group interfaces are intended only for MP. On an MP-group interface, only one bundle is allowed, and links cannot be bundled according to the peer descriptor. Compared with VT interfaces, the configuration of MP-group interfaces is more efficient and easy to configure and understand.

To configure MP, complete the following tasks: