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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] [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 variables 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 (includ-ing (including
       ing 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 exam-ple) example)
               ple) 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 indefinitely.  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 com-mand. command.
               mand.

       -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, argument processing, and any other overhead.

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

EXAMPLES
       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).



V5.6                                             28 May 2007                                     SNMPWALK(1)