1. TB 19.1.06 L.Jirden 1 Detector ethernet switches u ~55 switches for FEE needed by 6 detectors u KTI switch tested ok in B-field by TRD u Not included in IT networking responsibility u Switches to be purchased, installed, managed and maintained by ALICE u Installation required in April u DCS team ready to help u Waiting for feedback from TRD

2. TB 19.1.06 L.Jirden 2 911 9 5 5 11 1 1 1 7 2 7 Detector Ethernet switches (DCS, RCU) [total: 51]

3. TB 19.1.06 L.Jirden 3 detector switch in rack maximum length (m) cable entry side number of cablescomment TOF I 0540.5A18estimate O 0539.0A18estimate I 3038.7C18following cable trays O 3039.9C18following cable trays TPC A 0635.0A114estimate, with patch-panel! C 1443.0C114following cable trays TRD I 0840.5A64estimate O 0839.0A64estimate C 1837.0C128following cable trays I 2035.5C1following cable trays FMD A 1235.0A2estimate I 2035.5C1Following cable trays SDD A 1220.0A10estimate I 2032.5C10following cable trays PHOS A 1740.0A5estimate ETHERNET CABLE LENGTHS max length allowed: 45m without intermediate patch panel