What is the Multilink protocol, and how is it used with remote access servers?

What will be an ideal response?

Multilink or Multilink PPP (MPPP) is a capability of a remote access server to aggregate multiple data streams into one logical network connection for the purpose of using more than one frame relay line, ISDN channel, modem, or other communications line in a single logical connection. Multilink works with Bandwidth Allocation Protocol (BAP), which is a protocol that enables the bandwidth or speed of a remote connection to be allocated on the basis of the needs of an application, with the maximum allocation equal to the maximum speed of all channels aggregated via Multilink. Bandwidth Allocation Control Protocol (BACP) is similar to BAP but is able to select a preferred client when two or more clients vie for the same bandwidth.