  The aim of this paper is to swap the entanglement between two separate long
distant locations. The well-known entangled coherent states as two-mode
continuous-variable states are very interesting in quantum teleportation and
entanglement swapping processes. To make our investigation more realistic, by
using such entangled states as the building block of our quantum repeater
protocol, the effect of decoherence on the swapped entanglement is also
considered. We explicitly establish our model for four locations, moreover, we
find that our model can be extended to 2N locations, where N = 3; 4; ... .
Consequently, we could introduce this model as a quantum repeater which is
helpful for entanglement swapping to enough long distances.
