SNMPTRAPD.CONF

NAME
DESCRIPTION
PLEASE READ FIRST
DIRECTIVES
NOTES
SEE ALSO

NAME

/etc/snmp/snmptrapd.conf - configuration file for the ucd-snmp trap demon.

DESCRIPTION

snmptrapd.conf is the configuration file(s) which define how the ucd-snmp SNMP trap receiving demon operates when it receives a trap. These files may contain any of the directives found in the DIRECTIVES section below. This file is not required for the demon to operate, receive, or report traps. It is used solely as a method of providing extensibility to the trap demon.

PLEASE READ FIRST

First, make sure you have read the snmp_config(5) manual page that describes how the ucd-snmp configuration files operate, where they are located and how they all work together.

DIRECTIVES

traphandle OID|default PROGRAM [ARGS ...]

The traphandle configuration directive configures the snmptrapd program to launch an external program any time it receives a trap matching the OID token. If the OID token is the word default then any trap not matching any other trap handler will call this default one instead. The program is fed details about the trap to its standard input, in the following format, one entry per line:

HOSTNAME

The name of the host in question that sent the trap, as determined by gethostbyaddr().

IPADDRESS

The IP address of the host that sent the trap.

VARBINDS

A list of variable bindings that describe the trap and the variables enclosed in it. The first token on the line, up until the space, in the OID and the remainder of the line is its value. The first OID should be the system.sysUpTime.0 OID, and the second should be the ...snmpTrap.snmpTrapOID.0 OID. The remainder of the OIDs, with the possible exception of the last one, are the variable bindings contained within the trap. For SNMPv1 traps, the very last OID will be the ...snmpTrap.snmpTrapEnterprise OID and its value. Essentially, SNMPv1 traps have been converted to the SNMPv2 trap PDU type by the method described in the SNMPv1/SNMPv2 coexistence document, for which I forget the appropriate RFC number.

createUser username (MD5|SHA) authpassphrase [DES]

See the snmpd.conf manual page for a description of how to create SNMPv3 users. It’s roughly the same, but the file name changes to snmptrapd.conf from snmpd.conf.

format1 format

The format used to print a SNMPv1 TRAP message. See snmptrapd(8) for the layout characters available.

format2 format

The format used to print a SNMPv2 TRAP2 or INFORM message (note that the SNMPv3 protocol uses SNMPv2 style TRAPs and INFORMs).

NOTES

o

The demon blocks on the executing traphandle commands. (This should be fixed in the future with an appropriate signal catch and wait() combination).

SEE ALSO

snmp_config(5), snmptrapd(8), syslog(8), variables(5), read_config(3).