User Manual

Setting up SNMP
Dell Networking OS supports SNMP version 1 and version 2 which are community-based security models.
The primary difference 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 configuration, 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#
Reading Managed Object Values
You may only retrieve (read) managed object values if your management station is a member of the same
community as the SNMP agent.
Dell Networking supports RFC 4001, Textual Conventions for Internet Work Addresses that defines values
representing a type of internet address. These values display for ipAddressTable objects using the
snmpwalk command.
There are several UNIX SNMP commands that read data.
• Read the value of a single managed object.
snmpget -v version -c community agent-ip {identifier.instance |
descriptor.instance}
Simple Network Management Protocol (SNMP)
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