Abbreviated as DUAL, the
diffusing update algorithm
is a
routing protocol used by
EIGRP to calculate
and create routing tables to determine whether a path is looped or loop-free. It
also allows a router running EIGRP to find alternate paths without waiting on
updates from other
routers. The diffusing update
algorithm (DUAL) was developed at SRI International
by Dr. J.J. Garcia-Luna-Aceves.
See also
Enhanced Interior Gateway Routing Protocol (EIGRP).