Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Reference page 65

TABLE 5
System
Module
MS
NBFS
NS
PDM
PDTR
PLAT
PORT
PS
PSWP
RAS
RCS
RPCD
RTWR
SAS
SCN
SEC
Fabric OS Message Reference
53-1000437-01
System Module Descriptions (Continued)
Description
The Management Service enables the user to obtain information about the Fibre Channel fabric
topology and attributes by providing a single management access point. MS provides for both
monitoring and control of the following areas:
Fabric Configuration Server. Provides for the configuration management of the fabric.
Unzoned Name Server. Provides access to Name Server information that is not subject to zone
constraints.
Fabric Zone Server. Provides access to and control of zone information.
NBFSM is a part of the fabric shortest path first (FSPF) protocol that handles a neighboring or
adjacent switch's finite state machine (FSM).
Input to the FSM changes the local switch from one state to another, based on specific events. For
example, when two switches are connected to each other using an ISL (interswitch link) cable, they
are in the Init state. After both switches receive HELLO messages, they move to the Database
Exchange state, and so on.
NBFSM states are Down (0), Init (1), Database Exchange (2), Database Acknowledge Wait (3),
Database Wait (4), and Full (5).
Indicates problems with the simple name server module.
Parity data manager is a user space daemon responsible for the replication of persistent
configuration files from the primary partition to the secondary partition and from the active CP blade
to the standby CP blade.
These messages indicate panic dump trace files have been created.
This message indicates hardware problems.
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.
The performance server daemon measures the amount of traffic between end points or traffic with
particular frame formats, such as SCSI frames, IP frames, and customer-defined frames.
The portswap feature and associated commands generate these error messages.
First failure data capture (FFDC), informational message when FFDC events are logged to the FFDC
log and size/roll over warning.
The reliable commit service daemon generates log entries when it receives a request from the zoning,
security, or management server for passing data messages to switches in the fabric. 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, Security, or Management
Server modules.
The remote procedure call daemon (RPCD) is used by Fabric Access for API-related tasks.
The reliable transport write and read daemon helps deliver data messages either to specific switches
in the fabric or to all of 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.
Storage application services supporting director-class storage virtualization platform.
The internal state change notification daemon is used for state change notifications from the kernel
to the daemons within Fabric OS
The security daemon generates security errors, warnings, or information during security-related data
management or fabric merge operations. Administrators should watch for these messages, to
distinguish between internal switch and fabric operation errors, and external attack.
System Module Descriptions
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