SNMPD.CONF(5)             OpenBSD Programmer's Manual            SNMPD.CONF(5)

NAME
     snmpd.conf - Simple Network Management Protocol daemon configuration file

DESCRIPTION
     snmpd.conf is the configuration file for the snmpd(8) daemon.

SECTIONS
     The snmpd.conf file is divided into three main sections:

     Macros
           User-defined variables may be defined and used later, simplifying
           the configuration file.

     Global Configuration
           Global runtime settings for snmpd(8).

     OID Configuration
           Custom configuration of SNMP object identifiers and values.

     Comments can be put anywhere in the file using a hash mark (`#'), and
     extend to the end of the current line.

     Additional configuration files can be included with the include keyword,
     for example:

           include "/etc/snmpd.conf.local"

MACROS
     Macros can be defined that will later be expanded in context.  Macro
     names must start with a letter, and may contain letters, digits and
     underscores.  Macro names may not be reserved words (for example,
     community, system, or oid).  Macros are not expanded inside quotes.

     For example:

           ext_addr="192.168.0.1"
           listen on $ext_addr

GLOBAL CONFIGURATION
     The following options can be set globally:

     listen on address
             Specify the local address snmpd(8) should listen on for incoming
             SNMP messages.

     read-only community string
             Specify the name of the read-only community.  The default value
             is public.

     read-write community string
             Specify the name of the read-write community.  The default value
             is private.

     system contact string
             Specify the name or description of the system contact, typically
             a name or an e-mail address.  The default value is root@hostname
             using the hostname of the local machine.

     system description string
             Specify a description of the local system.  The default value is
             the operating system identification as printed by the uname(1)
             command using the -a flag:

                   OpenBSD myhost.example.com 4.2 GENERIC#595 i386

     system location string
             Specify the string describing the location of the local system,
             typically a physical location.  The default value is an empty
             string.

     system name string
             Specify the name of the local system, typically a fully-qualified
             domain name.  The default value is the hostname of the local
             system.

     system oid oid-string
             Specify the authoritative identification of the local system.
             The default value is 1.3.6.1.4.1.30155.23.1
             (iso.org.dod.internet.private.enterprises.openbsd.23.1)
             identifying a common OpenBSD system.

     system services number
             Specify a magic value which indicates the set of services that
             the local system may provide.  Refer to the sysServices
             description in the SNMP MIB for details.

     trap community string
             Specify the name of the trap community.  The default value is
             public.

     trap receiver string [oid oid-string] [community string]
             Specify the address or FQDN of a remote trap receiver for
             outgoing traps sent by snmpd(8).  This option may be specified
             multiple times.  The daemon will send outgoing traps using the
             revised SNMPv2 format and the configured trap community.  The
             default community is specified by the global trap community
             option.


OID CONFIGURATION
     It is possible to specify user-defined OIDs in the configuration file:

     oid oid-string name name [read-only | read-write] [type] value
             Return the specified value to the client for this OID.  The
             read-write option may allow the client to override it, and the
             type is either string or integer.

FILES
     /etc/snmpd.conf  Default location of the configuration file.

EXAMPLES
     The following example will tell snmpd(8) to listen on localhost, override
     the default system OID, set the magic services value and provides some
     custom OID values:

           listen on 127.0.0.1

           system oid 1.3.6.1.4.1.30155.23.2
           system services 74

           oid 1.3.6.1.4.1.30155.42.1 name myName read-only string "humppa"
           oid 1.3.6.1.4.1.30155.42.2 name myStatus read-only integer 1

SEE ALSO
     snmpctl(8), snmpd(8)

HISTORY
     The snmpd.conf file format first appeared in OpenBSD 4.3.

AUTHORS
     The snmpd(8) program was written by Reyk Floeter <reykATvantronix.net>.

OpenBSD 4.9                      July 18, 2010                     OpenBSD 4.9