Cisco Systems 3750E manual Disabling the Snmp Agent, Configuring Community Strings, 33-8

Chapter 33 Configuring SNMP

Configuring SNMP

invalid, and you need to reconfigure SNMP users by using the snmp-server user username global configuration command. Similar restrictions require the reconfiguration of community strings when the engine ID changes.

Disabling the SNMP Agent

Beginning in privileged EXEC mode, follow these steps to disable the SNMP agent:

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	no snmp-server	Disable the SNMP agent operation.
Step 3
	end	Return to privileged EXEC mode.
Step 4
	show running-config	Verify your entries.
Step 5
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

The no snmp-serverglobal configuration command disables all running versions (Version 1,

Version 2C, and Version 3) on the device. No specific Cisco IOS command exists to enable SNMP. The first snmp-serverglobal configuration command that you enter enables all versions of SNMP.

Configuring Community Strings

You use the SNMP community string to define the relationship between the SNMP manager and the agent. The community string acts like a password to permit access to the agent on the switch. Optionally, you can specify one or more of these characteristics associated with the string:

•An access list of IP addresses of the SNMP managers that are permitted to use the community string to gain access to the agent

•A MIB view, which defines the subset of all MIB objects accessible to the given community

•Read and write or read-only permission for the MIB objects accessible to the community

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

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