Provided by: snmpd_5.4.3~dfsg-2.4ubuntu1_amd64 bug

NAME

       snmpd - daemon to respond to SNMP request packets.

SYNOPSIS

       snmpd [OPTIONS] [LISTENING ADDRESSES]

DESCRIPTION

       snmpd  is  an  SNMP  agent  which binds to a port and awaits requests from SNMP management
       software.  Upon receiving a request, it processes the request(s), collects  the  requested
       information  and/or performs the requested operation(s) and returns the information to the
       sender.

OPTIONS

       -a      Log the source addresses of incoming requests.

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

       -c FILE Read FILE as a configuration file (or  a  comma-separated  list  of  configuration
               files).   Note that the loaded file will only understand snmpd.conf tokens, unless
               the configuration type is specified in the file as described  in  the  snmp_config
               man page under SWITCHING CONFIGURATION TYPES IN MID-FILE.

       -C      Do not read any configuration files except the ones optionally specified by the -c
               option.  Note that this behaviour also covers the persistent configuration  files.
               This  may  result  in  dynamically-assigned  values being reset following an agent
               restart, unless the relevant persistent config files are explicitly  loaded  using
               the -c option.

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

       -D[TOKEN[,...]]
               Turn on debugging output for the given TOKEN(s).  Without any tokens specified, it
               defaults to printing all the tokens (which is equivalent to  the  keyword  "ALL").
               You  might  want to try ALL for extremely verbose output.  Note: You can not put a
               space between the -D flag and the listed TOKENs.

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

       -g GID  Change to the numerical group ID GID after opening listening sockets.

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

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

       -I [-]INITLIST
               Specifies  which  modules  should  (or  should  not) be initialized when the agent
               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 the agent with the arguments -Dmib_init  -H
               (assuming debugging support has been compiled in).

       -L[efos]
               Specify  where  logging  output should be directed (standard error or output, to a
               file or via syslog).  See LOGGING OPTIONS in snmpcmd(5) 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 NAME Set an alternative application name (which will  affect  the  configuration  files
               loaded).   By  default  this  will  be snmpd, regardless of the name of the actual
               binary.

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

       -q      Print simpler output for easier automated parsing.

       -r      Do not require root access to run the daemon.  Specifically, do not exit if  files
               only accessible to root (such as /dev/kmem etc.) cannot be opened.

       -u UID  Change  to the user ID UID (which can be given in numerical or textual form) after
               opening listening sockets.

       -U      Instructs the agent to not remove its pid file (see the -p  option)  on  shutdown.
               Overrides the leave_pidfile token in the snmpd.conf file, see snmpd.conf(5).

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

       -V      Symbolically dump SNMP transactions.

       -x ADDRESS
               Listens  for  AgentX  connections on the specified address rather than the default
               "/var/agentx/master".  The address can either be a Unix domain socket path, or the
               address of a network interface.  The format is the same as the format of listening
               addresses described below.

       -X      Run as an AgentX subagent rather than as an SNMP master agent.

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

LISTENING ADDRESSES

       By default, snmpd listens for  incoming  SNMP  requests  on  UDP  port  161  on  all  IPv4
       interfaces.   However,  it  is possible to modify this behaviour by specifying one or more
       listening addresses as arguments to snmpd.  A listening address takes the form:

              [<transport-specifier>:]<transport-address>

       At its simplest, a listening address may consist only of a  port  number,  in  which  case
       snmpd listens on that UDP port on all IPv4 interfaces.  Otherwise, the <transport-address>
       part of the specification is parsed according to the following table:

           <transport-specifier>       <transport-address> format

           udp (default)               hostname[:port] or IPv4-address[:port]

           tcp                         hostname[:port] or IPv4-address[:port]

           unix                        pathname

           ipx                         [network]:node[/port]

           aal5pvc or pvc              [interface.][VPI.]VCI

           udp6 or udpv6 or udpipv6    hostname[:port] or IPv6-address[:port]

           tcp6 or tcpv6 or tcpipv6    hostname[:port] or IPv6-address[:port]

       Note that <transport-specifier> strings are case-insensitive so that, for  example,  "tcp"
       and "TCP" are equivalent.  Here are some examples, along with their interpretation:

       127.0.0.1:161           listen  on UDP port 161, but only on the loopback interface.  This
                               prevents snmpd being queried remotely.   The   port  specification
                               ":161"  is  not  strictly necessary since that is the default SNMP
                               port.

       TCP:1161                listen on TCP port 1161 on all IPv4 interfaces.

       ipx:/40000              listen on IPX port 40000 on all IPX interfaces.

       unix:/tmp/local-agent   listen on the Unix domain socket /tmp/local-agent.

       /tmp/local-agent        is identical to the previous specification, since the Unix  domain
                               is  assumed  if  the first character of the <transport-address> is
                               '/'.

       PVC:161                 listen on the  AAL5  permanent  virtual  circuit  with  VPI=0  and
                               VCI=161 (decimal) on the first ATM adapter in the machine.

       udp6:10161              listen on port 10161 on all IPv6 interfaces.

       Note  that  not  all  the  transport  domains  listed  above will always be available; for
       instance, hosts with no IPv6 support will not be able to use udp6 transport addresses, and
       attempts  to do so will result in the error "Error opening specified endpoint".  Likewise,
       since AAL5 PVC support is only currently available on Linux, it will fail  with  the  same
       error on other platforms.

CONFIGURATION FILES

       snmpd checks for the existence of and parses the following files:

       /etc/snmp/snmp.conf
             Common configuration for the agent and applications. See snmp.conf(5) for details.

       /etc/snmp/snmpd.conf

       /etc/snmp/snmpd.local.conf
             Agent-specific  configuration.   See  snmpd.conf(5)  for  details.   These files are
             optional and may be used to configure  access  control,  trap  generation,  subagent
             protocols and much else besides.

             In  addition  to these two configuration files in /etc/snmp, the agent will read any
             files with the names snmpd.conf and  snmpd.local.conf  in  a  colon  separated  path
             specified in the SNMPCONFPATH environment variable.

       /usr/share/snmp/mibs/
             The agent will also load all files in this directory as MIBs.  It will not, however,
             load any file that begins with a '.' or descend into subdirectories.

SEE ALSO

       (in recommended reading order)

       snmp_config(5), snmp.conf(5), snmpd.conf(5)