ADC Telecommunications Inc. PRSMAW4A Benutzerhandbuch

© 2009 ADC Telecommunications, Inc

  • Issue 2 • 11/2009

SNMP (Simple Network Management Protocol) is an international standard for remote 
control of online devices. A typical scenario involves the devices being controlled, 
remote computers (called managers) that can control them, a network connection, 
and SNMP software. The SNMP software includes SNMP manager software on each 
controlling computer and SNMP “proxy agent” software and one or more MIBs on 
each of the controlled devices. 

A MIB is a database defined in accordance with SNMP requirements. A MIB consists 
of tables of objects used to exchange information between a manager and agent. 
Information is exchanged using three basic operations: GET, SET, and TRAP. A 
manager uses GET to obtain an object value from a MIB and SET to set an object to a 
new value. A TRAP is a notification that is sent out by an agent when the value of a 
trap object exceeds a threshold defining an alarm state.

In a manager browser, a MIB looks like an Explorer hierarchy of folders and files, as 
shown in 

Figure 12-3

. The items at the lowest level, analogous to files in the Explorer 

view, are not files, however; they are objects that each represent one system 
parameter (object) and its current value. MIB objects are arranged in tables. Each set 
of objects (within a single folder) represents one such table. An object marked with a 
key symbol indicates that view is the key value for that table.