Datasheet

16-3
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 16 SNMP
16.2 Basic SNMP Components
Figure 16-2 Example of the Primary SNMP Components
An agent (such as SNMP) residing on each managed device translates local management information
data, such as performance information or event and error information caught in software traps, into a
readable form for the management system. Figure 16-3 illustrates SNMP agent get-requests that
transport data to the network management software.
Figure 16-3 Agent Gathering Data from a MIB and Sending Traps to the Manager
The SNMP agent captures data from management information bases, or MIBs, which are device
parameter and network data repositories, or from error or change traps.
A managed element—such as a router, access server, switch, bridge, hub, computer host, or network
element (such as an ONS 15454 SDH)—is accessed through the SNMP agent. Managed devices collect
and store management information, making it available via SNMP to other management systems having
the same protocol compatibility.
Management
Entity
Agent
Management
Database
Agent
NMS
Management
Database
Mana
g
ed Devices
Agent
Management
Database
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get, get-next, get-bulk
Network device
get-response, traps
32632
SNMP Manager
NMS
MIB
SNMP Agent