MP overview

Multilink PPP (MP) allows you to bind multiple PPP links into one MP bundle for increasing bandwidth. If a packet is larger than the minimum packet size for fragmentation, MP fragments the packet and distributes the fragments across multiple PPP links to the peer. The peer reassembles them into one packet and passes the packet to the network layer.

In addition to increasing bandwidth, MP also provides link-layer load sharing, which can implement backup. MP fragmentation can reduce transmission delay, especially on low-speed links.

MP is available to all physical or virtual interfaces with PPP encapsulation enabled, including serial, ISDN BRI/PRI, and PPPoX (PPPoE or PPPoA) interfaces. In MP configuration, as a best practice, include only one type of interfaces in an MP bundle.