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 (including any MIB object
       values from other MIB modules, that are defined as lying within this subtree).  If the network entity has an  error  pro-
       cessing  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 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 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, 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).



4th Berkeley Distribution                                  08 Feb 2002                                               SNMPWALK(1)