Cisco Catalyst 2960 Software Configuration Manual page 687

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Configuring SNMP

This chapter describes how to configure the Simple Network Management Protocol (SNMP) on the

Catalyst 2960, 2960-S, or 2960-C switch. Unless otherwise noted, the term switch refers to a standalone

switch and a switch stack.

Stacking is supported only on Catalyst 2960-S switches running the LAN base image.

For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release and the Cisco IOS Network Management Command Reference, Release 12.4:

http://www.cisco.com/en/US/docs/ios/netmgmt/command/reference/nm_book.html

Understanding SNMP

SNMP is an application-layer protocol that provides a message format for communication between

managers and agents. The SNMP system consists of an SNMP manager, an SNMP agent, and a MIB.

The SNMP manager can be part of a network management system (NMS) such as CiscoWorks. The agent

and MIB reside on the switch. To configure SNMP on the switch, you define the relationship between

the manager and the agent.

The SNMP agent contains MIB variables whose values the SNMP manager can request or change. A

manager can get a value from an agent or store a value into the agent. The agent gathers data from the

MIB, the repository for information about device parameters and network data. The agent can also

respond to a manager's requests to get or set data.

An agent can send unsolicited traps to the manager. Traps are messages alerting the SNMP manager to

a condition on the network. Traps can mean improper user authentication, restarts, link status (up or

down), MAC address tracking, closing of a TCP connection, loss of connection to a neighbor, or other

significant events.

Understanding SNMP, page 30-1

Configuring SNMP, page 30-6

Displaying SNMP Status, page 30-19

Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE

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