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Application Example Potentially a large number of PCEs in the backbone area Manual config would lead to the configuration of N PCEs per PCC… (N can be > 50 in operational networks) Automatically PCE Discovery => Each PCC discovers all PCEs Multi-area network with 1 backbone area and N areas Multi-area TE-LSP placement with inter-PCE communication PCE function distributed on several ABRs Area 0 * * * * * * * * * * * ABR ABR acting as PCE R1 R2 |