Cabletron Systems CyberSWITCH CSX7000 User Manual

Also see for CyberSwitch CSX7000: User guide User guide Release note Quick start

CSX7000 Guide24 CyberSWITCHPLATFORM M ULTIPLEXORThe multiplexor is an integral part of the CSX7000. It allows multiple groups within the CSX7000to share a single monitor, keyboard and diskette drive. The multiplexor card operates on theconcept of channels, with one channel for each group in the platform. The multiplexor connectseach of the groups to the monitor, keyboard and diskette drive through the individual processormodule of the particular group. In order to select these multiplexed peripherals for a specific group,use the front panel BC GROUP push buttons. When a group is selected, the multiplexor enables thesignals for the monitor, keyboard and diskette drive to pass through the selected processor module.One flexible disk drive is required per platform to service all of the processors in that platform.I NTERIOR LEDSA strip of LEDs is located directly above the multiplexor assembly and adjacent to the dual fans onthe inside of the platform. (Refer to the illustration on page 20). These LEDs provide informationabout the cards in individual slots, as well as the groups plugged into the platform’s backplane.The numbered, circular LEDs represent the slots, and the square LEDs represent the connectionsbetween pairs of slots.• The circular LEDs have three states: on, off or flashing. If the LED is on (green), it indicates powerto the specific slot. If it is flashing, it indicates the slot is part of a front-panel selected group. Ifit is off, there is no power to the slot.• The square LEDs are either on or off. If on (amber), it indicates a connection between the pairsof slots which are adjacent to the LED, thus forming a group including the two pairs of slots. Ifoff, there is no connection.1 23 45 67 89 10 11 12 13 14 15 16GREEN LIGHT = SLOT POWER ONFLASHING GREEN LIGHT = GROUP SELECTEDAMBER LIGHT = SLOTS CONNECTED