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Scenario 3: Combining GMPLS w/ LCAS Combines GMPLS provisioning capabilities with LCAS end-to-end signalling (add/remove group member) Using the same Path/Resv message exchange (as scenario 2) with additional LCAS support negotiation Operational sequence: GMPLS: bandwidth initiation, increase or decrease LCAS: e2e signalling add/remove group member GMPLS: when one end does not support LCAS (case 2a) Provides bandwidth modification uni- and bi-directional LSP Note: bandwidth provisioning can be performed using other methods