Messages Reference Guide

30 Fabric OS Message Reference
53-1002749-01
System module descriptions
1
FSS 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.
FSSM 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 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 HAM is a user-space daemon responsible for high availability management.
HAMK This is the kernel module for the high availability management (HAM) daemon.
HIL Hardware independent layer.
HLO 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.
HMON Health monitor.
HSL HSL error messages indicate problems with the Hardware Subsystem Layer of the Fabric OS.
HTTP HTTP error messages.
IBD IBD generates messages related to port restart failure.
IPAD System messages generated by the IP admin demon.
IPS Fibre Channel over IP license, tunneling, and port-related messages.
ISNS ISNS server and client status messages.
KAC KAC error messages indicate problems associated with Fabric OS and the external key vaults.
KSWD 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)
TABLE 6 System module descriptions (Continued)
System
module
Description