eigrp begins to open…


check it out… russ white and company prepare to open eigrp…

The DUAL Diffusing Update Algorithm
The Diffusing Update Algorithm (DUAL) provides a loop-free path through
a network made up of nodes and edges (routers and links) at every
instant throughout a route computation. This allows all routers
involved in a topology change to synchronize at the same time. Routers
that are not affected by topology changes are not involved in the
recalculation. The convergence time with DUAL rivals that of any other
existing routing protocol.

3.1     Algorithm Description

The Diffusing Update Algorithm (DUAL) is used by EIGRP to achieve fast
loop-free convergence with little cost in overhead, allowing EIGRP to
provide convergence rates comparable, and in some cases better than,
most common link state protocols[7]. In addition, only nodes that are
affected by a topology change take corrective action which allows DUAL
to have good scaling properties, reduced overhead, and lower complexity
than other IGP protocols, and requiring less information to be