Brocade Communications Systems AA979A - StorageWorks SAN Switch 2/8V Reference Manual page 72

1
System Module Descriptions
Table 1-4
System
Module
LSDB
MFIC
MPTH
MQ
MS
NBFS
NS
PDM
PDTR
PLAT
PORT
PS
PSWP
RAS
1-18
System Module Descriptions (Continued)
Description
The link state database is a part of the FSPF protocol that maintains records on the status
of port links. This database is used to route frames.
MS-FICON messages relate to FICON installations. FICON-CUP messages are displayed
under the FICU module.
Multicast path uses the shortest path first (SPF) algorithm to dynamically compute a
broadcast tree.
Message queues are used for interprocess communication. Message queues allow many
messages, each of variable length, to be queued. Any process or interrupt service routine
(ISR) can write messages to a message queue. Any process can read messages from a
message queue.
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 FSPF (fabric shortest path first) 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.
Fabric OS Message Reference
Publication Number: 53-1000242-01