Provided by: snmpd_5.4.1~dfsg-4ubuntu4_i386 bug


       snmptrapd - Receive and log SNMP trap messages.




       snmptrapd  is  an SNMP application that receives and logs SNMP TRAP and
       INFORM messages.

       Note: the default is to listen on UDP port 162 on all IPv4  interfaces.
       Since  162  is  a  privileged  port, snmptrapd must typically be run as


       -a      Ignore authenticationFailure traps.

       -A      Append to the log file rather than truncating it.

       -c FILE Read FILE as a configuration file.

       -C      Do not read any configuration files except the  one  optionally
               specified by the -c option.

       -d      Dump (in hexadecimal) the sent and received SNMP packets.

       -D TOKEN[,...]
               Turn  on  debugging output for the given TOKEN(s).  Try ALL for
               extremely verbose output.

       -e      Print  event  numbers  (rising/falling  alarm  etc.)  from  the
               (obsolete) M2M-MIB.
               This  functionality  is being deprecated and will be removed in
               due course.

       -f      Do not fork() from the calling shell.

       -F FORMAT
               When logging to standard output, use the format in  the  string
               FORMAT.   See  the section FORMAT SPECIFICATIONS below for more

       -h, --help
               Display a brief usage message and then exit.

       -H      Display a list of configuration file directives  understood  by
               the trap daemon and then exit.

       -I [-]INITLIST
               Specifies  which  modules should (or should not) be initialized
               when snmptrapd starts up.  If the comma-separated  INITLIST  is
               preceded  with a ’-’, it is the list of modules that should not
               be started.  Otherwise this is the list  of  the  only  modules
               that should be started.

               To  get  a  list  of  compiled  modules, run snmptrapd with the
               arguments -Dmib_init -H (assuming debugging  support  has  been
               compiled in).

               Specify where logging output should be directed (standard error
               or output, to a file or via syslog).  See  LOGGING  OPTIONS  in
               snmpcmd(1) for details.

       -m MIBLIST
               Specifies  a  colon  separated  list of MIB modules to load for
               this application.   This  overrides  the  environment  variable
               MIBS.  See snmpcmd(1) for details.

       -M DIRLIST
               Specifies  a  colon separated list of directories to search for
               MIBs.  This overrides the environment  variable  MIBDIRS.   See
               snmpcmd(1) for details.

       -n      Do  not  attempt  to  translate  source  addresses  of incoming
               packets into hostnames.

       -p FILE Save the process ID of the trap daemon in FILE.

       -O [abeEfnqQsStTuUvxX]
               Specifies how MIB objects and other output should be displayed.
               See  the  section  OUTPUT OPTIONS in the snmpcmd(1) manual page
               for details.

       -t      Do not log traps to syslog.  This disables logging  to  syslog.
               This  is  useful  if you want the snmptrapd application to only
               run traphandle hooks and not to log any traps to any  location.

       -v, --version
               Print version information for the trap daemon and then exit.

       -x ADDRESS
               Connect  to  the  AgentX master agent on the specified address,
               rather than the default "/var/agentx/master".  See snmpd(8) for
               details of the format of such addresses.

               Allows   to   specify  any  token  ("name")  supported  in  the
               snmptrapd.conf file and sets its value  to  "value".  Overrides
               the   corresponding  token  in  the  snmptrapd.conf  file.  See
               snmptrapd.conf(5) for the full list of tokens.


       snmptrapd  interprets  format  strings  similarly  to  printf(3).    It
       understands the following formatting sequences:

           %%  a literal %

           %a  the contents of the agent-addr field of the PDU (v1 TRAPs only)

           %A  the hostname corresponding to the contents  of  the  agent-addr
               field  of  the PDU, if available, otherwise the contents of the
               agent-addr field of the PDU (v1 TRAPs only).

           %b  PDU source address (Note:  this  is  not  necessarily  an  IPv4

           %B  PDU  source hostname if available, otherwise PDU source address
               (see note above)

           %h  current hour on the local system

           %H  the hour field from the sysUpTime.0 varbind

           %j  current minute on the local system

           %J  the minute field from the sysUpTime.0 varbind

           %k  current second on the local system

           %K  the seconds field from the sysUpTime.0 varbind

           %l  current day of month on the local system

           %L  the day of month field from the sysUpTime.0 varbind

           %m  current (numeric) month on the local system

           %M  the numeric month field from the sysUpTime.0 varbind

           %N  enterprise string

           %q  trap sub-type (numeric, in decimal)

           %P  security information from the PDU (community name  for  v1/v2c,
               user and context for v3)

           %t  decimal  number of seconds since the operating system epoch (as
               returned by time(2))

           %T  the value of the sysUpTime.0 varbind in seconds

           %v  list of variable-bindings from the notification payload.  These
               will  be  separated  by a tab, or by a comma and a blank if the
               alternate form is requested See also %V

           %V  specifies  the  variable-bindings  separator.  This   takes   a
               sequence  of  characters, up to the next % (to embed a % in the
               string, use \%)

           %w  trap type (numeric, in decimal)

           %W  trap description

           %y  current year on the local system

           %Y  the year field from the sysUpTime.0 varbind

       In addition to these values, an optional field width and precision  may
       also  be  specified  ,  just  as  in  printf(3),  and a flag value. The
       following flags are supported:

           -   left justify

           0   use leading zeros

           #   use alternate form

       The "use alternate form" flag changes the behavior  of  various  format
       string sequences:

              Time information will be displayed based on GMT (rather than the
              local timezone)

              The variable-bindings will be  a  comma-separated  list  (rather
              than a tab-separated one)

              The  system  uptime  will be broken down into a human-meaningful
              format (rather than being a simple integer)

       To get a message like "14:03 TRAP3.1 from" you could use
       something like this:

              snmptrapd -P -F "%02.2h:%02.2j TRAP%w.%q from %A\n"

       If you want the same thing but in GMT rather than local time, use

              snmptrapd -P -F "%#02.2h:%#02.2j TRAP%w.%q from %A\n"


       By default, snmptrapd listens for incoming SNMP TRAP and INFORM packets
       on UDP port 162 on all IPv4 interfaces.  However,  it  is  possible  to
       modify  this behaviour by specifying one or more listening addresses as
       arguments  to  snmptrapd.   See  the  snmpd(8)  manual  page  for  more
       information about the format of listening addresses.


       As   of   net-snmp   5.0,   the   snmptrapd  application  supports  the
       NOTIFICATION-LOG-MIB.  It does  this  by  opening  an  AgentX  subagent
       connection  to  the master snmpd agent and registering the notification
       log tables.  As long as the snmpd application is started first, it will
       attach  itself  to  it  and  thus  you  should be able to view the last
       recorded notifications via  the  nlmLogTable  and  nlmLogVariableTable.
       See  the snmptrapd.conf file and the "dontRetainLogs" token for turning
       off this support.  See the NOTIFICATION-LOG-MIB for more details  about
       the MIB itself.


       See the snmptrapd.conf(5) manual page.


       snmpcmd(1),    snmpd(8),   printf(3),   snmptrapd.conf(5),   syslog(8),