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       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.


       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


       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 fol­
              lowing format, one entry per line:

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

                     The IP address of the  host  that  sent  the

                     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 coex­
                     istence document, for  which  I  forget  the

              message (note that the SNMPv3 protocol uses  SNMPv2
              style TRAPs and INFORMs).


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


       snmp_config(5),   snmptrapd(8),  syslog(8),  variables(5),

                           28 Aug 2001          SNMPTRAPD.CONF(5)



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