MPLS LDP inbound label filtering can be used to reduce the size of the LIB by filtering label bindings that are advertised by other routers. This can save memory needed on a router to participate in the MPLS domain.
In this scenario, I want to filter all the bindings from P2 except for the loopback of PE_EAST, which is 188.8.131.52. The reason I choose only to permit the loopback of PE_EAST is this label will be the only one needed when I set up my iBGP peering for MP-BGP, when I get to the VRFs.
This is the topology used.
Checking the current LIB