Trap Configuration

Defines the default community to be used when sending SNMPv1 or SNMPv2 traps. Note that this directive must be used prior to a trapsink or trap2sink directive that wishes to use this community.

COMMUNITY the community name to be used.

Example:

Defines a destination for SNMPv1 or SNMPv2 traps generated by the agent.

HOST is an address specifier defining the network target that traps will be sent to. It consists of an optional transport specifier (udp (default if not specified) or tcp), followed by a hostname or IPv4 address, followed by an optional port number. The address components are separated by colons ":". For example, localhost or tcp:192.168.137.2:163.

COMMUNITY if specified will be the community name used for the traps. If it is not specified, the most recently specified trapcommunity will be used.

PORT allows for port-number to be defined if it is not present as part of the HOST specification. If no port is defined, the default port number of 162 will be used.

When a TCP transport specifier is used the SNMP agent establishes the TCP connection with the trap manager at start-up. Therefore the trap manger must be started before the SNMP agent otherwise an error is reported for the line in the snmpd.conf file which defines the trap manager.

Likewise when the TCP connection between the SNMP agent and the trap manager is dropped, traps are lost. Therefore it is inadvisable to use TCP instead of UDP for the transport specifier of trap managers.

If TCP is used for the connection between the SNMP agent and the trap manager and the connection is lost, to re-establish the connection the SNMP agent must be restarted, with the trap manager running and able to accept a TCP connection from the SNMP agent.

For issues with the trap manager accepting TCP connections from a SNMP agent refer to trap manager documentation.

Example:

Defines the configuration for a trap. This is the only way to define SNMPv3 traps and it is an alternative method for defining SNMPv1 and SNMPv2 traps.

SNMPCMD_ARGS are arguments that would be used for an equivalent snmptrap command. So for example to send an SNMPv3 trap as USM user user1 with authentication and encryption, the value -v3 -u user1 -1 priv would be used.

HOST see host definition for trap2sink above. Example: