7.6.1 MIB values cannot be acquired
If SNMP Agent cannot acquire MIB values from the manager product even though it is running, check the following:
-
Check whether SNMP Agent and the manager can communicate with each other. If not, the problem might be with the network configuration. Execute the ping command to check the network connections.
-
To determine the MIB values for SNMP Agent, use the snmpget command provided by NNM.
-
To collect all or some of the dumps from the SNMP Agent MIB groups for inspection, use the snmpwalk command provided by NNM.
-
Check whether the object ID set in SNMP Agent matches the object ID set in the manager.
-
If an attempt is being made to execute an SNMP SetRequest, check whether SNMP Agent is configured to respond to SNMP SetRequests. By default, the manager itself cannot change an SNMP Agent MIB value. To configure SNMP Agent to respond to SNMP SetRequests, add a set community name to SNMP Agent's /etc/SnmpAgent.d/snmpd.conf file.
-
To check whether information retrieval is correct, use the MIB Browser: SNMP operation.
-
If a MIB value provided by the native agent on Solaris, AIX, or Linux cannot be acquired, check whether the community name of the native agent adapter of SNMP Agent is the same as the community name of the native agent provided by the OS.
In the JP1/SSO resources, the MIB values provided by the native agent are the network summary, line utilization rate, interface traffic, IP traffic, ICMP traffic, TCP traffic, and UDP traffic.
-
If you are not able to acquire any of the MIB values provided by SNMP Agent, perform the following procedure:
-
Check whether the community name of SNMP Agent is the same as that of the manager product.
If you change the community name of SNMP Agent, make sure that you restart SNMP Agent or the OS.
-
Check whether a firewall exists between the manager product and SNMP Agent, and, if so, check whether SNMP communications are permitted.
If necessary, reconfigure the firewall settings.
You can also use the OS-provided packet trace command to acquire a packet trace to check whether SNMP requests are reaching the OS.
For details about how to use the OS-provided packet trace command, see the man pages for the relevant command.
HP-UX(IPF): nettl command
Solaris: snoop command
AIX: iptrace command
Linux: tcpdump command
-
If a MIB value cannot be acquired at times due to a timeout or a noSuchName error
This type of event occurs if the timeout period for SNMP requests from the manager product is too short.
Refer to 3.7 Notes about operations to determine an appropriate timeout period.
-
If a MIB value cannot be acquired due to some other cause
A command that SNMP Agent uses to acquire MIB values is not installed on Solaris, AIX, or Linux.
Execute the /opt/CM2/ESA/bin/snmpcmdchk command to check whether all required commands are installed. For details, see 2.2.2 Installing the commands used to acquire MIB values (for an OS other than HP-UX (IPF)).
-