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SNMPD(8)			   Net-SNMP			      SNMPD(8)

       snmpd - daemon to respond to SNMP request packets.


       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.

       -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

       -C      Do not read any configuration files except the ones  optionally
	       specified by the -c option.  Note that this behaviour also cov
	       ers 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.

	       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

       -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
	       This  option specifies which modules you do (or do not) want to
	       be initialized when the agent starts up.   If  the  comma-sepa
	       rated  INITLIST	is preceded with a -, it is the list of mod
	       ules that you do not want to be started.   Otherwise,  INITLIST
	       is the list of modules to be started.

	       To get a list of compiled modules, run the agent with the argu
	       ments -Dmib_init -H (assumes you have  debugging  support  com
	       piled in).

       -l [FILE]
	       Log  all output from the agent (including stdout and stderr) to
	       FILE.  If no filename is given, log to a default  file  set  at
	       compile time (normally /var/log/snmpd.log).
	       This  option is being deprecated, and -Lf FILE should be used

	       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.
	       This option deprecates the -l -s and -S options.

       -p FILE Save the process ID of the daemon in FILE.
	       This option deprecates the -P option.

       -P FILE Save the process ID of the daemon  in  FILE.   This  option  is
	       being deprecated, and -p FILE should be used instead.

       -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.

       -s      Use syslog for logging.
	       This  option  is being deprecated, and -Ls FACILITY should be
	       used instead.

       -S d|0-7
	       Specifies the syslog facility to use when logging to syslog.
	       This option is being deprecated, and -Ls FACILITY  should  be
	       used instead.

       -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.

	       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.

       By default, snmpd listens for incoming SNMP requests only on  UDP  port
       161.   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:


       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  part of the specification is parsed
       according to the following table:


	   udp			       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  strings are case-insensitive  so  that,
       for  example,  "tcp" and "TCP" are equivalent.  Here are some examples,
       along with their interpretation:	       listen on UDP port 161, but only on  the  loop
			       back  interface.   This	prevents  snmpd  being
			       queried remotely (which is  a  bit  pointless).
			       The  ":161" is redundant here since that is the
			       default SNMP port in any case.

       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-

       /tmp/local-agent        identical  to the previous specification, since
			       the Unix domain is the  default	transport  iff
			       the  first character of the 
			       is a /.

       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.

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

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


	     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

	     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 SNMP
	     CONFPATH environment variable.

	     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.

       (in recommended reading order)

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

4th Berkeley Distribution	  23 Jun 2005			      SNMPD(8)

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