  We consider the three fundamental one loop Feynman diagrams of QED viz.
vertex correction, fermion self-energy and vacuum polarization in the
light-front gauge and discuss the equivalence of their standard covariant
expressions with the light-front expressions obtained using light-cone
time-ordered Hamiltonian perturbation theory. Although this issue has been
considered by us and others previously, our emphasis in this article is on
addressing the ambiguity regarding the correct form of the gauge boson
propagator to be used in the light-front gauge. We generalize our earlier
results and show, using an alternative method called the Asymptotic Method, how
integrating over the light-front energy consistently in the covariant
expression of each of the three one loop corrections leads to the propagating
as well as the instantaneous diagrams of the light-front theory. In doing so,
we re-establish the necessity of using the correct form of gauge boson
propagator.
