EPC backhaul networks

[Glen Kent <glen.kent () gmail com>]

Hi,

I would like to understand why there is a preference for L3 VPNs over
L2 VPNs for the EPC backhaul networks? We can use both layer 2 and
layer 3 VPNs for communication between the eNodeB and the MME or S-GW,
so why is it that most providers prefer L3 over L2.

Glen