SNMP Configuration and Management Manual

Troubleshooting the SNMP Agent
SNMP Configuration and Management Manual—424777-006
7-2
Identifying Unavailable Resources
If any of the underlying resources used by the SNMP agent are not running, an SCF
error and corresponding event messages are generated.
Identifying Unavailable Resources
You can display the current operational states of the SNMP agent resources by either:
•
Issuing an SCF STATUS command against SNMP agent PROFILE, ENDPOINT,
and TRAPDEST objects
•
Issuing Get requests from an SNMP manager against SNMP agent private
zagInEpState and zagInTdState MIB objects
If an object is not in an expected state, look at the event log for information about the
availability of underlying resources. (See the EMS Manual for information on viewing
the contents of the event log.)
Underlying Request/Response Connection Resources
If a STATUS command indicates that an ENDPOINT object is in the STOPPED state,
you can issue the START command to try to start it. Likewise, if an SNMP Get request
indicates that a zagInEpState object is stopped(5), you can set the zagInEpStatus
object to active(1) through SNMP.
If the object remains in the STARTING state, at least one of the following conditions is
true:
•
The configured TCP/IP process is not available.
•
The SCP process is not available.
•
The specified subnet is not available.
The SNMP agent periodically tries to access the resource. As soon as the resource is
available, the ENDPOINT object enters the STARTED state.
Underlying Trap Destination Resources
If a STATUS command indicates that a TRAPDEST object is in the STARTING state,
or if an SNMP Get request indicates that a zagInTdState object is starting(4), an
underlying TCP/IP process might be unavailable.
The SNMP agent tries every 30 seconds to open a connection to the TCP/IP process
in question. If the reconnection is successful, the SNMP agent sends a coldStart trap to
the trap destination. If the reconnection is unsuccessful, the SNMP agent generates a
socket error event message.
Using EMS Filters
Individual event messages or groups of messages can provide information for
diagnosing problems. EMS filters are a useful mechanism for selecting individual