Cabletron Systems CyberSWITCH CSX7000 User Manual

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

MONITORING SYSTEMSYou can monitor the CSX7000 cluster (each of its platforms or subsystems and each of its groups)through the Environmental Management System, or EMS. Only one EMS module is necessary percluster; it resides in slot 15 of the first platform of the cluster. The EMS module monitors internalfans and temperature, and controls the capability to power on (or off) individual platforms orgroups. It also carries out processor control commands in the CSX7000.The EMS Processor Module is based on the Intelligent Environmental Sensor (IES) Supervisory System.The sensors for the EMS Module are integrated into the IES printed circuit board, which is adjacentto the multiplexor board. There is an IES printed circuit board in every CSX7000. These sensorscontinuously monitor the environmental conditions of the platform, including the temperature,voltages, fan rotation and fuses. The activity of the processors in each group is monitored throughthe EMS processor. If a fault occurs, the condition is reported to the EMS processor.There are three different ways to interface the EMS:• through the front panel LEDs• with SNMP• via BCVisionIn order to interface with EMS through BCVision, you must have a valid keyboard and monitorconnection. All functions of EMS are monitored through the video/keyboard interface on theCSX7000 primary platform. In the CSX7000 cluster, all CSX7000s must be connected through theEMS bus (data highway). All resets and commands that are carried out on the primary platform(through the IES and the Multiplexor) may be carried out on all other devices on the bus.T HE EMS B USThe EMS bus is an out-of-band data highway dedicated to communication between the EMS andthe IES circuitry on every CSX7000 (subsystem) in a cluster. In order to communicate with each IESboard, you must set a unique IES address on each platform. The primary platform (i.e., the platformwith the EMS processor) will always have an IES address of 1. In a cluster of platforms linkedtogether through the EMS bus, you can set a maximum of 31 addresses.The EMS bus is a daisy-chained bus. Its circuitry includes pass-through circuits that allow the busto continue functioning in the event of a failure on any individual platform. However, if the daisychain is interrupted (disconnected) at a platform, all platforms beyond the break will bedisconnected.