The import map can be only used to further filter a prefix that has already been accepted by the "route-target import" statement.
In a point to multipoint scenario, you could include the RT of the hub VRF on the spokes VRFs, which would alleviate the need to add new "route-target import" on the hub PE every time you add a new PE.
In an any to any scenario, you could define a RT that is common to all PEs, which doesn't necessarily need to match the RD.
Hope this helps,
Harold Ritter Sr. Technical Leader CCIE 4168 (R&S, SP) email@example.com México móvil: +52 1 55 8312 4915 Cisco México Paseo de la Reforma 222 Piso 19 Cuauhtémoc, Juárez Ciudad de México, 06600 México
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