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Chapter 13
SNMP
Figure 13-2
Management
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.
transport data to the network management software.
Figure 13-3
NMS
SNMP 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.
Example of the Primary SNMP Components
Management
NMS
Agent
Management
Database
Managed Devices
Agent Gathering Data from a MIB and Sending Traps to the Manager
get, get-next, get-bulk
get-response, traps
Entity
Agent
Management
Database
Figure 13-3
illustrates SNMP agent get-requests that
Network device
MIB
SNMP Agent
Cisco ONS 15600 Reference Manual, R7.0
13.2 Basic SNMP Components
Agent
Database
13-3
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