Dell Brocade 6520 Message Reference Supporting Fabric OS v7.1.0 - Page 52

1 System module descriptions TABLE 6 System module FSS FSSM FW HAM HAMK HIL HLO HMON HSL HTTP IBD IPAD IPS ISNS KAC KSWD System module descriptions (Continued) Description The Fabric OS state synchronization framework provides facilities by which the active control processor (CP) can synchronize with the standby CP, enabling the standby CP to take control of the switch nondisruptively during failures and software upgrades. These facilities include version negotiation, state information transfer, and internal synchronization functions, enabling the transition from standby to active operation. FSS is defined both as a component and a service. A component is a module in the Fabric OS, implementing a related set of functionality. A service is a collection of components grouped together to achieve a modular software architecture. The Fabric OS state synchronization management module is defined both as a component and a service. A component is a module in Fabric OS, implementing a related set of functionality. A service is a collection of components grouped together to achieve a modular software architecture. FW is the Fabric Watch module. This module monitors thresholds for many switch subsystems; for example, temperature, voltage, fan speed, and switch status. Any changes that cross a specified threshold are reported to the system message log. HAM is a user-space daemon responsible for high availability management. This is the kernel module for the high availability management (HAM) daemon. Hardware independent layer. HLO is a part of the Fabric Shortest Path First (FSPF) protocol that handles the HELLO protocol between adjacent switches. The HELLO protocol is used to establish connectivity with a neighbor switch, to establish the identity of the neighbor switch, and to exchange FSPF parameters and capabilities. Health monitor. HSL error messages indicate problems with the Hardware Subsystem Layer of the Fabric OS. HTTP error messages. IBD generates messages related to port restart failure. System messages generated by the IP admin demon. Fibre Channel over IP license, tunneling, and port-related messages. ISNS server and client status messages. KAC error messages indicate problems associated with Fabric OS and the external key vaults. The kernel software watchdog (KSWD) watches daemons for unexpected terminations and "hang" conditions and informs the HAM module to take corrective actions such as failover or reboot. The following daemons are monitored by KSWD: • Access Gateway daemon (agd) • Alias Server daemon (asd) • ARR daemon (arrd) • Authentication daemon (authd) • Blade Manager daemon (bmd) • Cluster Node Manager daemon (cnmd) • Common Access Layer daemon (cald) • DAUTH daemon (dauthd) • Diagnostics daemon (diagd) • Environment Monitor daemon (emd) • Event Manager daemon (evmd) • Exchange Switch Support daemon (essd) • FA-API rpc daemon (rpcd) 30 Fabric OS Message Reference 53-1002749-01