Owner's Manual

The Dell OpenManage software generates SNMP traps in response to changes in the status of sensors and other monitored parameters. You must configure
oneormoretrapdestinationsontheDellOpenManagesoftwaresystemforSNMPtrapstobesenttoamanagementstation.
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1. Open the Computer Management window.
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2. Expand the Computer Management icon in the window, if necessary.
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3. Expand the Services and Applications icon and click Services.
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4. Scroll down the list of services to SNMP Service, right-click SNMP Service,andclickProperties.
The SNMP Service Properties window appears.
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5. Click the Trapstabtoaddacommunityfortrapsortoaddatrapdestinationforatrapcommunity.
a. To add a community for traps, type the community name in the Community NameboxandclickAdd to list, which is located next to the
Community Name box.
b. To add a trap destination for a trap community, select the community name from the Community Name drop-down box and click Add under the
Trap Destinations box.
The SNMP Service Configuration window appears.
c. Type the trap destination and click Add.
The SNMP Service Properties window appears.
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6. Click OK to save the changes.
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Configuring the SNMP Agent on Systems Running Supported Red Hat Enterprise Linux
OperatingSystems
Server Administrator uses the SNMP services provided by the ucd-snmp or net-snmp agent. You can configure the SNMP agent to change the community
name, enable Set operations, and send traps to a management station. To configure your SNMP agent for proper interaction with management applications
such as IT Assistant, perform the procedures described in the following sections.
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SNMP Agent Access Control Configuration
The management information base (MIB) branch implemented by Server Administrator is identified by the 1.3.6.1.4.1.674 OID. Management station
applications must have access to this branch of the MIB tree to manage systems running Server Administrator.
For supported Red Hat Enterprise Linux operating systems, the default SNMP agent configuration gives read-only access for the public community only to the
MIB-II system branch (identified by the 1.3.6.1.2.1.1 OID) of the MIB tree. This configuration does not allow management applications to retrieve or change
Server Administrator or other systems management information outside of the MIB-II system branch.
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Server Administrator SNMP Agent Install Actions
If Server Administrator detects the default SNMP configuration during installation, it attempts to modify the SNMP agent configuration to give read-only access
to the entire MIB tree for the publiccommunity.ServerAdministratormodifiesthe/etc/snmp/snmpd.conf SNMP agent configuration file in two ways.
ThefirstchangeistocreateaviewtotheentireMIBtreebyaddingthefollowinglineifitdoesnotexist:
view all included .1
The second change is to modify the default access line to give read-onlyaccesstotheentireMIBtreeforthepublic community. Server Administrator looks for
the following line:
access notConfigGroup "" any noauth exact systemview none none
If Server Administrator encounters this line, it modifies the line as follows:
access notConfigGroup "" any noauth exact all none none
These changes to the default SNMP agent configuration give read-onlyaccesstotheentireMIBtreeforthepublic community.
Server Administrator SNMP communicates with the SNMP agent using the SNMP Multiplexing (SMUX) protocol. When Server Administrator SNMP connects to the
SNMP agent, it sends an object identifier to the SNMP agent to identify itself as a SMUX peer. Because that object identifier must be configured with the SNMP
agent, Server Administrator adds the following line to the SNMP agent configuration file, /etc/snmp/snmpd.conf, during installation if it does not exist:
smuxpeer .1.3.6.1.4.1.674.10892.1
NOTE: See your operating system documentation for additional details about SNMP configuration.
NOTE: To ensure that Server Administrator is able to modify the SNMP agent configuration to provide proper access to systems management data, it is
recommended that any other SNMP agent configuration changes be made after installing Server Administrator.