the fragments. The routers must be able to receive and reconstruct upper-layer protocol data
units (PDUs). The routers must also be able to receive PDUs of an agreed-upon size.
Transmission channels in a bundle do not need to be the same type. Asynchronous and
synchronous links can be used to simultaneously transmit fragments of one datagram.
and a dialup link of 9.6 Kbps. MLPPP bundles the three channels for a total bandwidth of 137 K.
with applications in which bandwidth requirements are dynamic.
telecommuters or SOHO environments. Transmission channels in a bundle do not need to be
the same type. Asynchronous and synchronous interfaces can be used to simultaneously
transmit fragments of one datagram, as illustrated in Figure 11-16. PPP is the standard
networking protocol for connecting WAN links. PPP's major disadvantage, however, is that it
can handle only one physical link at a time, unlike MLPPP.
bundle. Packets generated by one system can be sent across any of the links to the remote
address, which prevents delays in transmission and provides faster data throughput.
remote address. This is known as packet fragmentation. Each fragment negotiates the fastest route
to the remote address. Packet fragmentation can mean that the fragments arrive at the remote
address out of sequence. MLPPP can reconfigure the packets into the correct sequence.