Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. The FRF.12
specification describes the method of fragmenting Frame Relay frames
into smaller frames.When multiplexing packet data from different virtual
circuits or flows, Quality of Service concerns often arise. This is
because a frame from one virtual circuit may occupy the line for a long
enough period of time to disrupt a service guarantee given to another
virtual circuit.Fragmentation is a well known method for addressing
this. An incoming long packet is broken up into a sequence of shorter
packets and enough information is added to reassemble that long frame at
the far end.FRF.12 is a specification from the Frame Relay Forum which
specifies how to perform fragmentation on frame relay traffic in several
different scenarios.