Multilink PPP (also referred to as MP, MPPP, MLP, or Multilink) provides a method for spreading traffic across multiple physical WAN links. Multilink PPP also provides packet fragmentation and reassembly, proper sequencing, multivendor interoperability, and load balancing on inbound and outbound traffic.

MPPP allows packets to be fragmented and sends these fragments simultaneously over multiple point-to-point links to the same remote address. The multiple physical links come up in response to a user-defined load threshold. MPPP can measure the load on just inbound traffic, or on just outbound traffic, but not on the combined load of both inbound and outbound traffic.

Configuring MPPP requires two steps, as shown in the figure.

Step 1. Create a multilink bundle.

Step 2. Assign interfaces to the multilink bundle.

Each interface that is part of the multilink group:

To disable PPP multilink, use the no ppp multilink command.