Alcatel Carrier Internetworking Solutions Switch/Router 用户手册

Page 13-1

Simple Network Management Protocol (

SNMP

) is an application layer protocol that allows 

network devices to exchange management information. 

SNMP

 works by sending messages, 

called protocol data units (

PDUs

), to network devices. Network administrators use 

SNMP

 to 

monitor network performance and to solve network problems.

An 

SNMP

-managed network is comprised of three fundamental parts: agents, managed 

devices, and network management systems (

NMSs

). An agent, which resides within a 

managed device (i.e., a switch), is responsible for translating its local knowledge of manage-
ment information into a form compatible with 

SNMP

. When certain defined asynchronous 

events occur within a switch, the managed device sends traps, using the 

SNMP protocol

, to a 

designated 

NMS

. The 

NMS

 then views and monitors the switch’s information through manage-

ment software applications such as 

HP

 Open View or X-Vision.

SNMP

 parameters and traps are configurable through the 

 command. For more informa-

tion on this command, refer to Configuring SNMP Parameters and Traps on page 13-2. You 
can view 

SNMP

 statistics through the 

 command. For more information on this 

command, refer to Viewing SNMP Statistics on page 13-8. Both of these commands are also 
listed on the 

menu.