A Self Organizing Network, SON, element, comprising: a processor; and a memory configured to cooperate with the processor such that the SON element is configured to: communicate with at least one Multi-vendor LTE network using MPLS, Multiprotocol Label Switching, VPN transport system and at least one transport communication network including S1 and X2 interfaces; obtain information that relates to updated Neighbor Lists, NL, of at least one eNodeB (226, 227) belonging to the at least one LTE wireless network from the at least one eNodeB, and information that relates to at least one routing element associated with the at least one eNodeB convey the information that relates to the updated Neighbor Lists of the at least one eNodeB (226, 227) to programmable virtual route reflectors (228, 232, 236) in at least one of a core network, an aggregation network, and an access network of the transport communication network; and inform at least one route reflector about a default gateway associated with the at least one eNodeB (226, 227), the route reflector (228, 232, 236) constructing a routing table defining routes required by the Neighbor List of said eNodeB (226, 227), such that a Cell Site Gateway, CSG, of the eNodeB (226, 227) imports the routing table from the associated default gateway. a processor; and a memory configured to cooperate with the processor such that the SON element is configured to: communicate with at least one Multi-vendor LTE network using MPLS, Multiprotocol Label Switching, VPN transport system and at least one transport communication network including S1 and X2 interfaces; obtain information that relates to updated Neighbor Lists, NL, of at least one eNodeB (226, 227) belonging to the at least one LTE wireless network from the at least one eNodeB, and information that relates to at least one routing element associated with the at least one eNodeB convey the information that relates to the updated Neighbor Lists of the at least one eNodeB (226, 227) to programmable virtual route reflectors (228, 232, 236) in at least one of a core network, an aggregation network, and an access network of the transport communication network; and inform at least one route reflector about a default gateway associated with the at least one eNodeB (226, 227), the route reflector (228, 232, 236) constructing a routing table defining routes required by the Neighbor List of said eNodeB (226, 227), such that a Cell Site Gateway, CSG, of the eNodeB (226, 227) imports the routing table from the associated default gateway. communicate with at least one Multi-vendor LTE network using MPLS, Multiprotocol Label Switching, VPN transport system and at least one transport communication network including S1 and X2 interfaces; obtain information that relates to updated Neighbor Lists, NL, of at least one eNodeB (226, 227) belonging to the at least one LTE wireless network from the at least one eNodeB, and information that relates to at least one routing element associated with the at least one eNodeB convey the information that relates to the updated Neighbor Lists of the at least one eNodeB (226, 227) to programmable virtual route reflectors (228, 232, 236) in at least one of a core network, an aggregation network, and an access network of the transport communication network; and inform at least one route reflector about a default gateway associated with the at least one eNodeB (226, 227), the route reflector (228, 232, 236) constructing a routing table defining routes required by the Neighbor List of said eNodeB (226, 227), such that a Cell Site Gateway, CSG, of the eNodeB (226, 227) imports the routing table from the associated default gateway.