Dell S4820T, Configuration Manual

Page: 928 / 1178

SNMP version 3 (SNMPv3) is a user-based security model that provides password authentication for user
security and encryption for data security and privacy. Three sets of configurations are available for SNMP
read/write operations: no password or privacy, password privileges, password and privacy privileges.
You can configure a maximum of 16 users even if they are in different groups.
Creating a Community
For SNMPv1 and SNMPv2, create a community to enable the community-based security in Dell
Networking OS.
The management station generates requests to either retrieve or alter the value of a management object
and is called the SNMP manager . A network element that processes SNMP requests is called an SNMP
agent . An SNMP community is a group of SNMP agents and managers that are allowed to interact.
Communities are necessary to secure communication between SNMP managers and agents; SNMP
agents do not respond to requests from management stations that are not part of the community.
Dell Networking OS enables SNMP automatically when you create an SNMP community and displays the
following message. You must specify whether members of the community may only retrieve values
(read), or retrieve and alter values (read-write).
22:31:23: %STKUNIT0-P:CP %SNMP-6-SNMP_WARM_START: Agent Initialized - SNMP
WARM_START.
To choose a name for the community you create, use the following command.
• Choose a name for the community.
CONFIGURATION mode
snmp-server community name {ro | rw}
Example of Creating an SNMP Community
To view your SNMP configuration, use the
show running-config snmp
command from EXEC Privilege
mode.
Dell(conf)#snmp-server community my-snmp-community ro
22:31:23: %STKUNIT0-P:CP %SNMP-6-SNMP_WARM_START: Agent Initialized - SNMP
WARM_START.
Dell#show running-config snmp
!
snmp-server community mycommunity ro
Setting Up User-Based Security (SNMPv3)
When setting up SNMPv3, you can set users up with one of the following three types of configuration for
SNMP read/write operations.
Users are typically associated to an SNMP group with permissions provided, such as OID view.
• noauth — no password or privacy. Select this option to set up a user with no password or privacy
privileges. This setting is the basic configuration. Users must have a group and profile that do not
require password privileges.
• auth — password privileges. Select this option to set up a user with password authentication.
• priv — password and privacy privileges. Select this option to set up a user with password and privacy
privileges.
To set up user-based security (SNMPv3), use the following commands.
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Simple Network Management Protocol (SNMP)