Cabletron Systems FPIM 02 FPIM-02 User Manual

Also see for SmartSwitch 9000: Reference guide Appendix Appendix Appendix User guide

Contents

Operation3-2band from user data. Modules which share the SMB-10 bus periodically send outloop-back packets to ensure the validity of SMB-10. In the event a fault is detectedon the SMB-10, the SMB-1 can be used as an alternate communication channel bythe modules.System Diagnostic ControllerThis diagnostic controller is composed of a Z-80 microprocessor and itssupporting logic. The diagnostic controller is designed to control the power-upsequencing of modules, monitor the 9M426-02 input and output powerparameters, keep watch over the main host processor, as well as monitor thetemperature and control the SMB LANVIEW diagnostic LED. Although thediagnostic controller and the main host processor can operate independent ofeach other if needed, they exchange information about each other’s status andoverall module condition. The information gathered by the diagnostic controlleris available to the network manager via local/remote management and the LCDlocated on the environment module. The 9M426-02 has been designed so that inthe event of a diagnostic controller fault, the 9M426-02 will continue to function.DC/DC ConverterThe DC/DC converter converts the 48 VDC on the system power bus to thenecessary operating voltages for its host network services module. The diagnosticcontroller monitors and controls the operation of the DC/DC converter.INB InterfaceEach module that attaches to the INB has an INB Network Interface Block (NIB).The INB NIB converts canonical frames to fixed length data blocks fortransmission onto the INB. For data blocks received from the INB, the INB NIBreassembles the data blocks received from the INB back into canonical frames fortransmission to the SmartSwitch ASIC then from the SmartSwitch ASIC to thefront panel ports.SecureFast SwitchThe SmartSwitch ASIC is a hardware based switch design that is the key buildingblock of the SmartSwitch 9000. All filtering/forwarding decisions are made inhardware as opposed to software as in traditional switches. This customhardware allows the SmartSwitch ASIC to process over 150K frames per second.The SmartSwitch ASIC is designed to support up to 64 ports that are shared