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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 infor-
       mation.

       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  vari-
       ables(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, help-
       ing 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  dis-
       played.

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 val-
               ues.  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)