MEP V2, a new event building protocol for the LHCb experiment

During the long shutdown of the LHC in 2018, the LHCb collaboration plans to significantly upgrade the LHCb detector. This upgrade foresees a trigger-less read-out. The detector data is sent directly into a read-out network at the LHC rate of 40 MHz. The data is then reconstructed and processed by a computing farm. The expected data rate will be in the order of 40 Tbit/s, making it the largest read-out network in HEP to date.