Technical data

16 Network OS Message Reference
53-1002489-01
System module descriptions
1
FW The Fabric Watch (FW) 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 the high availability management.
HIL The HIL module messages indicate any issues associated with the Hardware Independent Layer (HIL)
for general platform components, such as Environmental Monitoring (EM), FAN and PSU subsystems,
and other platform FRUs.
HSL HSL error messages indicate problems with the Hardware Subsystem Layer (HSL) of the Network OS.
IGMP IGMP module messages indicate any issue associated with the Internet Group Management Protocol
(IGMP) snooping feature.
IPAD System messages generated by the IP admin demon.
L2SS L2SS error messages indicate problems with the Layer 2 system manager that controls the Layer 2
forwarding engine and controls the learning, aging, and forwarding functionality.
L3SS The L3SS module messages indicate any issues associated with IP forwarding, ARP, and IP routes.
LOG The LOG module messages describe events and problems associated with the RASLog and Audit log
facilities.
MSTP MSTP error messages indicate problems with Multiple Spanning Tree Protocol (MSTP) modules of the
Network OS.
NSM NSM error messages indicate problems with the Interface management and VLAN management
module of the Network OS.
ONMD ONMD error messages indicate problems with the Operation, Administration and Maintenance
module of the Network OS.
PHP PHP module messages indicate any important information associated with the discovery and
creation, deletion, and updating of the port profiles.
PLAT PLAT messages indicate hardware problems.
PORT PORT error messages refer to the front-end user ports on the switch. Front-end user ports are directly
accessible by users to connect end devices or connect to other switches.
RAS Informational messages when first failure data capture (FFDC) events are logged to the FFDC log, and
size or roll over warnings.
RCS The reliable commit service (RCS) daemon generates log entries when it receives a request from the
zoning or security server for passing data messages to switches. RCS then requests reliable transport
write and read (RTWR) to deliver the message. RCS also acts as a gatekeeper, limiting the number of
outstanding requests for the Zoning or Security modules.
RTWR The reliable transport write and read daemon helps deliver data messages either to specific switches
in the fabric or to all the switches in the fabric. For example, if some of the switches are not reachable
or are offline, RTWR returns an “unreachable” message to the caller, allowing the caller to take the
appropriate action. If a switch is not responding, RTWR retries 100 times.
SEC The security daemon generates security errors, warnings, or information during security-related data
management or fabric merge operations. Administrators must watch for these messages to
distinguish between internal switch and fabric operation errors and external attack.
TABLE 6 System module descriptions (Continued)
System
module
Description