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RedHat 9 (Linux i386) - man page for snmpcmd (redhat section 1)

SNMPCMD(1)				     Net-SNMP				       SNMPCMD(1)

       snmpcmd - commands to communicate with a network entity using SNMP Requests.


       This  manual  page  describes the common options for the SNMP commands: snmpbulkget, snmp-
       bulkwalk, snmpdelta, snmpget, snmpgetnext, snmpnetstat,	snmpset,  snmpstatus,  snmptable,
       snmptest,  snmptrap, snmpusm, snmpwalk.	The command line applications use the SNMP proto-
       col to communicate with an SNMP capable network entity, an agent.  Individual applications
       typically  (but not necessarily) take additional parameters that are given after the agent
       specification.  These parameters are documented in the manual pages for each application.

       -a authProtocol
	      Set the authentication protocol (MD5|SHA) used for authenticated SNMPv3 messages.

       -A authPassword
	      Set the authentication pass phrase used for authenticated SNMPv3 messages.

       -c community
	      Set the community string for SNMPv1/v2c transactions.

       -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

       -e engineID
	      Set  the	authoritative (security) engineID used for SNMPv3 REQUEST messages.  This
	      is the engineID of the agent or proxy (e.g., 800000020109840301). (will be  discov-
	      ered if not supplied)

       -E engineID
	      Set  the	context engineID used for SNMPv3 REQUEST messages scopedPdu.  This is the
	      engineID of the agent (e.g., 800000020109840301). (will be  authoritative  engineID
	      if not specified)

       -h     Display a brief usage message and then exit.

       -H     Display  a list of configuration file directives understood by the command and then

       -I brR Specifies input parsing options. See INPUT OPTIONS below.

       -l secLevel
	      Set the securityLevel used for SNMPv3 messages  (noAuthNoPriv|authNoPriv|authPriv).
	      Appropriate pass phrase(s) must provided when using any level higher than noAuthNo-

       -m MIBLIST
	      Specifies a colon separated list of MIB modules to load for this application.  This
	      overrides the environment variable MIBS.

	      The  special  keyword  ALL  is  used to specify all modules in all directories when
	      searching for MIB files.	Every file whose name does not begin  with  "."  will  be
	      parsed as if it were a MIB file.

       -M DIRLIST
	      Specifies a colon separated list of directories to search for MIBs.  This overrides
	      the environment variable MIBDIRS.

       -n contextName
	      Set the destination contextName used for SNMPv3 messages.  The default  contextName
	      is the empty string "".

       -O nEebqQfsSvXT
	      Specifies output printing options. See OUTPUT OPTIONS below.

       -P cdeRuwW
	      Specifies MIB parsing options.  See MIB PARSING OPTIONS below.

       -r retries
	      Specifies the number of retries to be used in the requests. The default is 5.

       -t timeout
	      Specifies the timeout in seconds between retries. The default is 1.

       -u secName
	      Set the securityName used for authenticated SNMPv3 messages.

       -v 1 | 2c | 3
	      Specifies  the protocol version to use: 1 (RFCs 1155-1157), 2c (RFCs 1901-1908), or
	      3 (RFCs 2571-2574).  The default is version 1.

       -V     Display version information for the application and then exit.

       -x privProtocol
	      Set the privacy protocol (DES) used for encrypted SNMPv3 messages.

       -X privPassword
	      Set the privacy pass phrase used for encrypted SNMPv3 messages.

       -Z boots,time
	      Set the engineBoots and engineTime used for authenticated  SNMPv3  messages.   This
	      will  initialize	the  local  notion of the agents boots/time with an authenticated
	      value stored in the LCD. (will be discovered if not supplied)

       The string AGENT specifies the remote SNMP entity with which to communicate.   The  format
       of this parameter is defined in the AGENT SPECIFICATION section below.

       The AGENT specification takes the form:


       At  its simplest, the AGENT specification may consist of a hostname, or an IPv4 address in
       the standard "dotted quad" notation.  In this case, communication will be attempted  using
       UDP/IPv4  to  port  161 of the given host.  Otherwise, the <transport-address> part of the
       specification is parsed according to the following table:

	   <transport-specifier>       <transport-address> format

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

       hostname:161	       perform	query  using  UDP/IPv4 datagrams to hostname on port 161.
			       The ":161" is redundant here since that is the default  SNMP  port
			       in any case.

       udp:hostname	       identical  to the previous specification.  The "udp:" is redundant
			       here since UDP/IPv4 is the default transport.

       TCP:hostname:1161       connect to hostname on port 1161 using TCP/IPv4 and perform  query
			       over that connection.

       ipx::00D0B7AAE308       perform	query  using IPX datagrams to node number 00D0B7AAE308 on
			       the default network, and using the default IPX port of 36879 (900F
			       hexadecimal), as suggested in RFC 1906.

			       perform	query  using  IPX  datagrams  to port 1161 on node number
			       00D0B721C6C0 on network number 0AE43409.

       unix:/tmp/local-agent   connect to the Unix domain socket  /tmp/local-agent,  and  perform
			       the query over that connection.

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

       AAL5PVC:100	       perform	the  query  using AAL5 PDUs sent on the permanent virtual
			       circuit with VPI=0 and VCI=100 (decimal) on the first ATM  adapter
			       in the machine.

       PVC:1.10.32	       perform	the  query  using AAL5 PDUs sent on the permanent virtual
			       circuit with VPI=10 (decimal) and VCI=32 (decimal) on  the  second
			       ATM  adapter  in  the  machine.	 Note that "PVC" is a synonym for

       udp6:hostname:10161     perform the query using UDP/IPv6 datagrams to port 10161 on  host-
			       name (which will be looked up as an AAAA record).

			       perform	the query using UDP/IPv6 datagrams to port 161 at address

       tcpipv6:::1	       connect to port 161 on the local host (::1 in IPv6 parlance) using
			       TCP/IPv6 and perform query over that connection.

       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 "Unknown host".  Likewise, since AAL5 PVC sup-
       port is only currently available on Linux, it will fail with the same error on other plat-

       The  Net-SNMP  MIB parser mostly adheres to the Structure of Management Information (SMI).
       As that specification has changed through time, and in recognition of the (ahem) diversity
       in compliance expressed in MIB files, additional options provide more flexibility in read-
       ing MIB files.

       -Pw    Show some warning messages in resolving the MIB files.  Can be also  set	with  the
	      configuration token "mibWarningLevel".

       -PW    Show  additional	warning  messages.   Can be also set with the configuration token

       -Pe    Do not show MIB errors.  Can be also set with the configuration  token  "showMibEr-

       -Pc    Allow  ASN.1  comment  to extend to the end of the MIB source line.  This overcomes
	      some problems with manually maintained MIB files.  Can be also set with the config-
	      uration token "strictCommentTerm".

       -Pd    Collect  the DESCRIPTION information into the parsed hierarchy.  This increases the
	      memory used by the size of each DESCRIPTION clause.

       -Pu    Allow underline characters in symbols.  Can be  also  set  with  the  configuration
	      token "mibAllowUnderline".

       -PR    Replace MIB objects using the last read MIB file.  WARNING: Setting this option may
	      result in an incorrect hierarchy.  Can be also set  with	the  configuration  token

       Output  display	can be controlled by passing various parameters to the -O flag.  The fol-
       lowing examples should demonstrate this.

       The default output looks as follows:
       snmpget -c public -v 1 localhost system.sysUpTime.0
       system.sysUpTime.0 = Timeticks: (14096763) 1 day, 15:09:27.63

       -Oq    Removes the equal sign and type information:
	      system.sysUpTime.0 1:15:09:27.63

       -OQ    Removes the equal sign and type information:
	      system.sysUpTime.0 = 1:15:09:27.63

       -Of    Gives you the complete OID:
	       .iso.org.dod.internet.mgmt.mib-2.system.sysUpTime.0 = Timeticks: (14096763) 1 day,

       -Os    Deletes all but the last symbolic part of the OID:
	      sysUpTime.0 = Timeticks: (14096763) 1 day, 15:09:27.63

       -OS    A variation on -Os that adds the name of the MIB that defined the object:
	      SNMPv2-MIB::sysUpTime.0 = Timeticks: (14096763) 1 day, 15:09:27.63
	      (from release 5.0, this is now the default output format)

       -Ou    Prints  the  OID in the UCD-style (inherited from the original CMU code) removing a
	      series of "standard" prefixes (if relevant).
	      system.sysUpTime.0 = Timeticks: (14096763) 1 day, 15:09:27.63

       -On    Prints the OID numerically:
	       . = Timeticks: (14096763) 1 day, 15:09:27.63

       -Oe    Removes the symbolic labels from enumerations:
	      snmpget -c public -v 1 localhost ip.ipForwarding.0
	      ip.ipForwarding.0 = INTEGER: forwarding(1)
	      snmpget -c public -v 1 -Oe localhost ip.ipForwarding.0
	      ip.ipForwarding.0 = INTEGER: 1

       -Ob    When OIDs contain a index to a table, they are broken into the  displayable  pieces
	      and  shown to you.  For example the OID vacmSecurityModel. is nicely
	      broken down by default and the string hidden in the OID is shown to you as  vacmSe-
	      curityModel.0."wes".  The -Ob option disables this feature and displays it as vacm-
	      SecurityModel. again.

       -OE    This modifies the index strings to include a \ to escape the quotes, to allow  them
	      to be reused in shell commands, such as vacmSecurityModel.0.\"wes\"

       -OX    This  modifies  the output of index OIDs, to look more "program like".  If you take
	      an entry from the IPV6-MIB::ipv6RouteTable, it is indexed with an IPv6 address  and
	      two integers, and if you are used to IPv6 addresses you will know that decimal OIDs
	      are not the preferred notation. Compare:
	      snmpgetnext -OS host IPV6-MIB:ipv6RouteTable
	      IPV6-MIB::ipv6RouteIfIndex. = INTEGER: 2
	      snmpgetnext -OSX host IPV6-MIB:ipv6RouteTable
	      IPV6-MIB::ipv6RouteIfIndex[3ffe:100:ff00:0:0:0:0:0][64][1] = INTEGER: 2

       -OT    If hexadecimal code is printed, this will also print any printable characters after
	      the hexadecimal codes.

       -Ov    Output only the variable value, not the OID:
	      snmpget -c public -v 1 -Ov localhost ip.ipForwarding.0
	      INTEGER: forwarding(1)

       -Ot    Output timeticks values as raw numbers:
	      system.sysUpTime.0 = 14096763

       Note that most of these options can be turned on or off by default by tuning the snmp.conf
       file.  See the snmp.conf(5) manual page for details.

       The -I flag specifies various options that control  how	your  input  to  the  program  is
       parsed.	 By  default,  all  input parsing methods are used: First the OID is parsed regu-
       larly, then -IR is used, then -Ib is used, unless one of the following flags is	specified
       which will force it to only use one method.

       -IR    The  -IR flag specifies random access lookup, so that if the entire OID path is not
	      specified, it will search for a node in the MIB tree with  the  given  name.   Nor-
	      mally, you'd have to specify the vacmSecurityModel OID above as .iso.org.dod.inter-
	      curityToGroupEntry.vacmSecurityModel.0."wes",  but  the  use of the -IR flag allows
	      you to shorten that to just vacmSecurityModel.0."wes".   (Though	this  OID  really
	      needs  to be quoted - 'vacmSecurityModel.0."wes"' - to prevent the shell from swal-
	      lowing the double quotes).

	      Additionally, see the RANDOM ACCESS MIBS section below.

       -Ib    The -Ib flag indicates that the expression  you  gave  it  is  actually  a  regular
	      expression  that	should	be  used to search for the best match possible in the MIB
	      tree.  This would allow you to specify the node vacmSecurityModel MIB node as some-
	      thing as generic as vacmsecuritymodel (since case insensitive searches are done) or
	      vacm.*model.  Note that multiple matches are obviously possible (.* matches  every-
	      thing),  and  the  best  result is currently calculated as the one that matches the
	      closest to the beginning of the node name and the highest in the tree.   A  current
	      side  effect  of	this  option is that you can't specify indexes or multiple nodes,
	      since the '.' is treated as part of the regular expression.

       -Iu    Use the traditional UCD-style input approach of assuming that OIDs  are  rooted  at
	      the  'mib-2' point in the tree (unless they start with an explicit '.')	If random
	      access lookup is in effect (which is the default for most commands), then this will
	      only  affect  OIDs  specified with a leading numberic subidentifier (and no initial
	      '.')  Thus an input of "snmpcmd ... 1" would refer to  'iso'  (from  v5.0  onwards)
	      while "snmpcmd -Iu ... 1" would refer to 'system'.

       -Ir    By  default,  indices  into tables and values to be assigned to objects are checked
	      against range and type specified in the MIB.  The -Ir  flag  disables  this  check.
	      This  flag is mostly useful when you are testing an agent.  For normal operation it
	      is useful to get your requests checked before they are sent  to  the  remote  agent
	      (the diagnostic that the library can provide is also much more precise).

       In  previous  releases  of  the	UCD-SNMP package (and if using the -Iu option), an object
       identifier such as system.sysDescr.0 will be lookup in a single "well known" place,  built
       into the SNMP library (or specified by the /usr environment variable).  The standard place
       is: .iso.org.dod.internet.mgmt.mib-2.  The identifier  may  alternatively  be  a  complete
       object  identifier, this is designated by a leading "dot" if using UCD-input style, and is
       the first thing tried otherwise.  To simplify the specification of object identifiers  the
       library	supports  random  access to the identifiers in the MIBs. This is requested by the
       -IR option to the SNMP applications.  Additionally, -Os prints OIDs in this manner.  Using
       this,  system.sysDescr.0  may  also be entered as sysDescr.0.  To search only a single MIB
       for the identifier (if it appears in more than one), specify it as SNMPv2-MIB::sysDescr.0.
       (use  -OS  to  print output OIDs in this manner, though this is the default as from v5.0).
       This notation will also ensure that the specified MIB is loaded, i.e. it need not be  men-
       tioned in the -m option (or MIBS environment variable).

       /usr   The  standard  prefix for object identifiers (if using UCD-style output).  Defaults
	      to .iso.org.dod.internet.mgmt.mib-2

       MIBS   The list of  MIBs  to  load.  Defaults  to  SNMPv2-TC:SNMPv2-MIB:IF-MIB:IP-MIB:TCP-
	      MIB:UDP-MIB:SNMP-VACM-MIB.  Overridden by the -m option.

	      The  list  of  directories  to  search  for MIBs. Defaults to /usr/share/snmp/mibs.
	      Overridden by the -M option.

	      Agent configuration file. See snmpd.conf(5).


	      Application configuration files. See snmp.conf(5).

       snmpget(1),  snmpgetnext(1),  snmpset(1),  snmpbulkget(1),  snmpbulkwalk(1),  snmpwalk(1),
       snmptable(1),  snmpnetstat(1), snmpdelta(1), snmptrap(1), snmpinform(1), snmpusm(1), snmp-
       status(1), snmptest(1), snmp.conf(5).

4th Berkeley Distribution		   07 Feb 2002				       SNMPCMD(1)

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