BGP/MPLS VPN

Hi,

    When two sites namely site1 and  site2 are connected to the same PE
router (PE1), is it required to run two instances of BGP in PE
router.Suppose if both site1 and site2 are having same route (110.10/16) and
EBGP is running between CE router and PE router, how will PE router  handle
this routes. since IPV4 routes will be same which are received from CE
router.Before converting to VPN-IPV4 routes, the decesion process will be
run and only one route will be installed in BGP.

  Please help me to handle this situation without using multiple instance of
BGP in PE router.

Regards,
Sakthi

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