We present an LP model for resource deployment decisions in a multi-pr
oduct, multi-level, multi-period manufacturing network with multiple d
emand sources, alternate bill of materials, substitution components, e
ffective periods segments and capacity constraints. Typical instances
require over 25000 constraints. We describe a decomposition approach t
hat does not necessarily require consideration of all constraints simu
ltaneously. Cases with above dimensions can be solved in few minutes i
n host computers by using this type of active set strategy. Computatio
nal results for large-scale real-life problems are presented.