Q-Logic 59047-09 C Manuel D’Utilisation

2 – SNMP Overview

Traps

2-2

59047-09  C

S

The Manager is the application through which the network administrator performs 
network management functions. The SNMP agent is the direct interface on the 
switch for any SNMP manager connecting to the switch using the SNMP protocol, 
as shown in 

. The agent will be started by the script file(s) responsible 

for switch initialization when the switch powers up or when the switch is reset.

When an SNMP request arrives at the agent, the agent will compose a message 
and pass it on to Switch Management to process the message and provide a 
response to the agent. The agent then provides a response to the originator of the 
SNMP request. The SNMP agent does not have direct access to the internal 
database of the switch. 

Traps are notification messages sent from the switch to a registered manager 
when a change of state occurs within the switch. A change of state can be an 
alarm condition or simply a configuration change. 

The Fibre Alliance MIB defines a trap table configurable through SNMP. A trap 
table may have up to 5 entries, and can be configured using the SNMP Manager 
or Enterprise Fabric Suite 2007 graphical user interface. The same trap table 
information is available to both SNMP Manager and Enterprise Fabric Suite 2007. 

A trap event is reported when the incoming error has a severity level less than or 
equal to the configured severity level. The trap event types and trap severity levels 
are listed in 

. Refer to 

 for information on specific traps.

Workstation with SNMP 

Manager Application

Switch with Agent and 

Common User Interface API

Ethernet Connection