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Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter32 Configuring SNMP Configuring SNMP
When configuring SNMP, follow these guidelines:
•When configuring an SNMP group, do not specify a notify view. The snmp-server host global
configuration command autogenerates a notify view for the u ser and th en a dd s i t to t he g rou p
associated with that user. Modifying the group's notify view affects all users associated with that
group. See the Cisco IOS Configuration Fundamentals Command Refe rence, Release 1 2.2 for
information about when you should configure notify views.
•To configure a remote user, specify the IP address or port number for the remote SNMP agent of the
device where the user resides.
•Before you configure remote users for a particular agent, config ure the SNMP engine ID, using the
snmp-server engineID global configuration with the remote option. The remote agent' s SNM P
engine ID and user password are used to compute the authentication and privacy digests. If you do
not configure the remote engine ID first, the configuration comma nd fails .
•When configuring SNMP informs, you need to configu r e th e SNMP engine ID for the remote agent
in the SNMP database before you can send proxy requests or informs to it.
•If a local user is not associated with a remote host, the switch does not send informs for the auth
(authNoPriv) and the priv (authPriv) authentication levels.
•Changing the value of the SNMP engine ID has important side effects. A user's password (entered
on the command line) is converted to an MD5 or SHA security digest based on the password a nd the
local engine ID. The command-line password is then destroyed, a s required by RFC 2274. Because
of this deletion, if the value of the engine ID changes, the security digests of SN MPv3 users become
invalid, and you need to reconfigure SNMP users by using the snmp-server user username global
configuration command. Similar restrictions require the reconfigurat ion 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:
The no snmp-server global 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-server global configuration command that you enter enab les all versi ons of SNMP.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 no snmp-server Disable the SNMP agent operation.
Step3 end Return to privileged EXEC mode.
Step4 show running-config Verify your entries.
Step5 copy running-config startup-config (Optional) Save your entries in the configuration file.