Users Guide
NOTE: IOA supports only Read-only mode.
Important Points to Remember
• Typically, 5-second timeout and 3-second retry values on an SNMP server are sucient for both local area network (LAN) and wide
area network (WAN) applications. If you experience a timeout with these values, increase the timeout value to greater than 3 seconds,
and increase the retry value to greater than 2 seconds on your SNMP server.
Setting up SNMP
Dell Networking OS supports SNMP version 1 and version 2 which are community-based security models. The primary dierence between
the two versions is that version 2 supports two additional protocol operations (informs operation and
snmpgetbulk query) and one
additional object (counter64 object).
Creating a Community
For SNMPv1 and SNMPv2, create a community to enable the community-based security in the 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.
The 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 retrieve values in Read-Only mode. Read-write access is not supported.
22:31:23: %RPM1-P:CP %SNMP-6-SNMP_WARM_START: Agent Initialized - SNMP WARM_START.
To create an SNMP community:
• Choose a name for the community.
CONFIGURATION mode
snmp-server community name ro
Example of Creating an SNMP Community
To view your SNMP conguration, use the show running-config snmp command from EXEC Privilege mode.
Dell(conf)#snmp-server community my-snmp-community ro
22:31:23: %RPM1-P:CP %SNMP-6-SNMP_WARM_START: Agent Initialized - SNMP WARM_START.
Dell#show running-config snmp
!
snmp-server community mycommunity ro
Dell#
Setting Up User-Based Security (SNMPv3)
When setting up SNMPv3, you can set users up with one of the following three types of conguration 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
conguration. Users must have a group and prole 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.
200
Simple Network Management Protocol (SNMP)