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13-3
Cisco ONS 15600 Reference Manual, R7.2
Chapter 13 SNMP
13.2 Basic SNMP Components
Figure 13-2 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 13-3 illustrates SNMP agent get-requests that
transport data to the network management software.
Figure 13-3 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 15600)—is accessed through the SNMP agent. Managed devices collect and
store management information, making it available through SNMP to other management systems having
the same protocol compatibility.
Management
Entity
Agent
Management
Database
Agent
NMS
Management
Database
Managed Devices
Agent
Management
Database
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get, get-next, get-bulk
Network device
get-response, traps
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SNMP Manager
NMS
MIB
SNMP Agent