Users Guide

NOTE: For additional details on SNMP conguration, see the operating system documentation.
SNMP Agent Access Control Conguration
The management information base (MIB) branch implemented by Server Administrator is identied by the Object Identier (OID)
1.3.6.1.4.1.674. Management applications must have access to this branch of the MIB tree to manage systems running Server
Administrator.
For Red Hat Enterprise Linux and VMware ESXi operating systems, the default SNMP agent conguration gives read-only access for
the public community only to the MIB-II system branch (identied by the 1.3.6.1.2.1.1 OID) of the MIB tree. This conguration does not
allow management applications to retrieve or change Server Administrator or other systems management information outside of the
MIB-II system branch.
Server Administrator SNMP Agent Install Actions
If Server Administrator detects the default SNMP conguration during installation, it attempts to modify the SNMP agent
conguration to give read-only access to the entire MIB tree for the public community. Server Administrator modies the SNMP
agent conguration le
/etc/snm, p/snmpd.conf by:
• Creating a vew to the entire MIB tree by adding the following line if it does not exist: view all included
• Modifying 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 nds the above line, it modies the line as: access notConfigGroup "" any noauth exact
all none none
NOTE: To ensure that Server Administrator is able to modify the SNMP agent conguration for providing proper
access to systems management data, it is recommended that any other SNMP agent conguration changes be made
after installing Server Administrator.
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 identier to the SNMP agent to identify itself as a SMUX peer.
Because that object identier must be congured with the SNMP agent, Server Administrator adds the following line to the SNMP
agent conguration le, /etc/snmp/snmpd.conf, during installation if it does not exist:
smuxpeer .1.3.6.1.4.1.674.10892.1
Changing The SNMP Community Name
Conguring the SNMP community name determines which systems are able to manage your system through SNMP. The SNMP
community name used by management applications must match an SNMP community name congured on the system running
Server Administrator, so that the management applications can retrieve management information from Server Administrator.
To change the SNMP community name used for retrieving management information from a system running Server Administrator:
1. Open the SNMP agent conguration le, /etc/snmp/snmpd.conf.
2. Find the line that reads: com2sec publicsec default public or com2sec notConfigUser default public.
NOTE: For IPv6, nd the line com2sec6 notConfigUser default public. Also, add the text agentaddress
udp6:161
in the le.
3. Edit this line, replacing public with the new SNMP community name. When edited, the new line should read: com2sec
publicsec default community_name
or com2sec notConfigUser default community_name.
4. To enable SNMP conguration changes, restart the SNMP agent by typing: service snmpd restart.
Conguring Your System To Send Traps To A Management Station
Server Administrator generates SNMP traps in response to changes in the status of sensors and other monitored parameters. One
or more trap destinations must be congured on the system running Server Administrator for SNMP traps to be sent to a
management station.
To congure your system running Server Administrator to send traps to a management station, edit the SNMP agent conguration
le, /etc/snmp/snmpd.conf, and perform the following steps:
1. Add the following line to the le: trapsink IP_address community_name, where IP_address is the IP address of the
management station and
community_name is the SNMP community name.
2. To enable SNMP conguration changes, restart the SNMP agent by typing: service snmpd restart.
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