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 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 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 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

       Note  that  snmpwalk 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).