i would like to tell you that the number of P routers has nothing to do with the prefixes. You should have to check are the labels are generating and you are getting the mpls ldp up or not. If possible please paste the configuration that will be better for us to find out the problem.
i want to implement ISP backbone network with MPLS into PE1-PE2 core. in core network PE an P routers running OSPF. at edge router running EBGP PE1,PE2 with other ISP two sides and i want to connect internal them with IBGP. for this normally we use Route reflector or confederation. but for more scalability if i want to remove IBGP peering from core P1,P2 just OSPF protocol and IBGP on Edge routers PE1-PE2 and label will run for IBGP in transit router.no routing of IBGP will store on P core routers. Is it possible. plz reply
First of all, i'd recommend you to start a new thread in case you have your own problem to solve, unless your problem is related to the original post.
As for you question, what you have described is the exact behavior of a service provider with a MPLS backbone, it is a BGP free core, the P routers need not run BGP, since the PE routers will have LSP tunnels using label switching over the backbone and the P routers will just do label swapping and not IP lookups, accordingly the P routers needs not learn the BGP routes, but however you need all the routers (PEs and Ps) to run an IGP in order to be able to build the forwarding plane tables.
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