2.3.b Implement and troubleshoot PPP

2.3.b [iii] MLPPP

The Multilink Point-to-Point (MLPPP) feature provides load balancing functionality over multiple WAN links, while providing multi-vendor interoperability, packet fragmentation and proper sequencing, and load calculation on both inbound and outbound traffic.

Adam, Paul (2014-07-12). All-in-One CCIE V5 Written Exam Guide (Kindle Locations 2158-2159).  . Kindle Edition.

http://www.tcpipguide.com/free/t_PPPMultilinkProtocolMPMLPMLPPPPPPMP.htm