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SNMPWALK(1)				     Net-SNMP				      SNMPWALK(1)

NAME
       snmpwalk - retrieve a subtree of management values using SNMP GETNEXT requests

SYNOPSIS
       snmpwalk [APPLICATION OPTIONS] [COMMON OPTIONS] AGENT [OID]

DESCRIPTION
       snmpwalk  is an SNMP application that uses SNMP GETNEXT requests to query a network entity
       for a tree of information.

       An object identifier (OID) may be given on the command line.   This  OID  specifies  which
       portion of the object identifier space will be searched using GETNEXT requests.	All vari-
       ables in the subtree below the given OID are queried and their  values  presented  to  the
       user.  Each variable name is given in the format specified in variables(5).

       If   no	 OID   argument   is   present,  snmpwalk  will  search  the  subtree  rooted  at
       SNMPv2-SMI::mib-2 (including any MIB object  values  from  other  MIB  modules,	that  are
       defined	as lying within this subtree).	If the network entity has an error processing the
       request packet, an error packet will be returned and a message will be shown,  helping  to
       pinpoint why the request was malformed.

       If  the	tree search causes attempts to search beyond the end of the MIB, the message "End
       of MIB" will be displayed.

OPTIONS
       -Cc     Do not check whether the returned OIDs are increasing.  Some agents (LaserJets are
	       an  example)  return  OIDs  out of order, but can complete the walk anyway.  Other
	       agents return OIDs that are out of order and can cause snmpwalk	to  loop  indefi-
	       nitely.	 By default, snmpwalk tries to detect this behavior and warns you when it
	       hits an agent acting illegally.	Use -Cc to turn off this check.

       -CE {OID}
	       End the walk at the specified OID, rather than a simple subtree.  This can be used
	       to walk a partial subtree, selected columns of a table, or even two or more tables
	       within a single command.

       -Ci     Include the given OID  in  the  search  range.	Normally  snmpwalk  uses  GETNEXT
	       requests  starting  with  the OID you specified and returns all results in the MIB
	       subtree rooted at that OID.  Sometimes, you may wish to include the OID	specified
	       on  the	command  line  in  the	printed  results if it is a valid OID in the tree
	       itself.	This option lets you do this explicitly.

       -CI     In fact, the given OID will be retrieved automatically if the  main  subtree  walk
	       returns	no  useable values.  This allows a walk of a single instance to behave as
	       generally expected, and return the specified instance value.   This  option  turns
	       off this final GET request, so a walk of a single instance will return nothing.

       -Cp     Upon completion of the walk, print the number of variables found.

       -Ct     Upon  completion  of  the walk, print the total wall-clock time it took to collect
	       the data (in seconds).  Note that the timer is started just before  the	beginning
	       of  the data request series and stopped just after it finishes.	Most importantly,
	       this means that it does not include snmp library initialization,  shutdown,  argu-
	       ment processing, and any other overhead.

       In  addition  to  these	options,  snmpwalk takes the common options described in the snm-
       pcmd(1) manual page.

EXAMPLES
       Note that snmpbulkget REQUIRES  an argument specifying the agent to query and at most  one
       OID argument, as described there.  The command:

       snmpwalk -Os -c public -v 1 zeus system

       will retrieve all of the variables under system:

       sysDescr.0 = STRING: "SunOS zeus.net.cmu.edu 4.1.3_U1 1 sun4m"
       sysObjectID.0 = OID: enterprises.hp.nm.hpsystem.10.1.1
       sysUpTime.0 = Timeticks: (155274552) 17 days, 23:19:05
       sysContact.0 = STRING: ""
       sysName.0 = STRING: "zeus.net.cmu.edu"
       sysLocation.0 = STRING: ""
       sysServices.0 = INTEGER: 72
       (plus the contents of the sysORTable).

       The command:

       snmpwalk -Os -c public -v 1 -CE sysORTable zeus system

       will retrieve the scalar values, but omit the sysORTable.

SEE ALSO
       snmpcmd(1), snmpbulkwalk(1), variables(5).

V5.7.2					   28 May 2007				      SNMPWALK(1)
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