snmpd(1M)                       TCP/IP R4.11                       snmpd(1M)


NAME
       snmpd - SNMP agent

SYNOPSIS
       snmpd [-v][-d] [-apall] [-aperror] [-aptrace] [-apwarn]

DESCRIPTION
       The SNMP agent is implemented as the snmpd command, which is a daemon
       process that services requests from an SNMP network management
       station (NMS).  The agent may be included in the list of daemons in
       the /etc/tcpip.params file to be started and stopped automatically by
       the rc scripts during changes of system run levels.  You can start,
       stop, and configure the agent through sysadm.

       When snmpd is started it disassociates itself from the controlling
       terminal, reads the configuration file, and begins servicing network
       requests.  The agent listens for requests on the UDP port number
       returned by getservbyname(3N) for "snmp" which defaults to 161.

       The agent authenticates requests by verifying that the community
       string in the request matches one in the /etc/snmpd.conf file and
       that the level of access matches the type of request.  After
       authentication, the agent accesses or modifies the requested
       information and sends a reply to the originator.

       When the agent is restarted, an interface changes state, or a request
       fails authentication, snmpd sends traps to all the hosts specified in
       the trap records in the /etc/snmpd.conf file.

       Options are:

       -apall Use the -apall option to force snmpd to remain attached to the
              controlling terminal and to print additional information about
              the packets received and transmitted.  Use this option to see
              the information exchange between the agent and a management
              station.

       -aperror
              Use the -aperror option to force snmpd to remain attached to
              the controlling terminal and to print APERROR messages
              generated by the agent.

       -aptrace
              Use the -aptrace option to force snmpd to remain attached to
              the controlling terminal and to print APTRACE messages used to
              trace a packet through the agent.

       -apwarn
              Use the -apwarn option to force snmpd to remain attached to
              the controlling terminal and to print APWARN messages
              generated by the agent.

       -v     Use the -v option to force snmpd to remain attached to the
              controlling terminal and to print additional information about
              the packets received and transmitted.  Use this option to see
              the information exchange between the agent and a management
              station.  NOTE - This option will soon be obsolete and ignored
              if specified.  Use option "-apall" instead.

       -d     Use the -d option to force snmpd to remain attached to the
              controlling terminal and to print diagnostic messages on
              stderr.  This option is similar to the -v option, however, it
              does not print information about packets received and
              transmitted.  Use this option to see any potential error
              messages without the verbosity of packet exchanges.  NOTE -
              This option will soon be obsolete and ignored if specified.
              Use options "-aperror" and "-apwarn" instead.

       snmpd.conf
              This file specifies the communities and trap destinations the
              agent will recognize and provides values for a user
              configurable objects.

       /etc/snmpinfo.dat
              A data file used by the agent and other SNMP commands to
              translate between object IDs and symbolic names.

       /usr/etc/snmp/*.mib.Z
              The /usr/etc/snmp directory contains several files in the
              format <name>.mib.Z..  These files are copies of the MIBs the
              agent supports -- most are Internet standard RFCs, however,
              there are some enterprise MIBs.  The agent implements the HP-
              UNIX MIB for the filesystem and process table information.
              The DGC MIB contains management information specific to DG/UX
              system hardware and printer management information.  The files
              have been compressed via compress(1) and must be uncompressed
              before before they can be used.  After uncompressing the files
              they are ready for use with your management station software.

DIAGNOSTICS
       If there are errors parsing the command line, or if the -v or -d
       options are specified, output is sent to stdout and stderr;
       otherwise, all output is sent to syslogd.  Fatal or critical messages
       are logged at syslog level LOG_WARNING; other messages are logged at
       level LOG_INFO.

SEE ALSO
       snmpgetmany(1M), snmpgetnext(1M), snmpgetone(1M), snmpsetany(1M),
       snmpgettab(1M), snmptraprecv(1M), snmptrapsend(1M), snmpdfiles(4M),
       snmpd.conf(4M), info.dat(4M) syslogd(1M), syslog(3c),
       getservbyname(3N), compress(1M).


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