1SNMPWALK(1)                        Net-SNMP                        SNMPWALK(1)
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NAME

6       snmpwalk  -  retrieve a subtree of management values using SNMP GETNEXT
7       requests
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SYNOPSIS

10       snmpwalk [APPLICATION OPTIONS] [COMMON OPTIONS] AGENT [OID]
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DESCRIPTION

13       snmpwalk is an SNMP application that  uses  SNMP  GETNEXT  requests  to
14       query a network entity for a tree of information.
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16       An  object identifier (OID) may be given on the command line.  This OID
17       specifies which portion of the object identifier space will be searched
18       using  GETNEXT  requests.  All variables in the subtree below the given
19       OID are queried and their values presented to the user.  Each  variable
20       name is given in the format specified in variables(5).
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22       If  no OID argument is present, snmpwalk will search the subtree rooted
23       at SNMPv2-SMI::mib-2 (including any MIB object values  from  other  MIB
24       modules,  that  are defined as lying within this subtree).  If the net‐
25       work entity has an error processing the request packet, an error packet
26       will  be  returned and a message will be shown, helping to pinpoint why
27       the request was malformed.
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29       If the tree search causes attempts to search beyond the end of the MIB,
30       the message "End of MIB" will be displayed.
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OPTIONS

33       -Cc     Do  not  check  whether the returned OIDs are increasing.  Some
34               agents (LaserJets are an example) return OIDs out of order, but
35               can  complete  the  walk anyway.  Other agents return OIDs that
36               are out of order and can cause snmpwalk to  loop  indefinitely.
37               By  default,  snmpwalk  tries to detect this behavior and warns
38               you when it hits an agent acting illegally.  Use  -Cc  to  turn
39               off this check.
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41       -CE {OID}
42               End  the  walk  at the specified OID, rather than a simple sub‐
43               tree.  This can be used to walk  a  partial  subtree,  selected
44               columns  of a table, or even two or more tables within a single
45               command.
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47       -Ci     Include the given OID in the search range.   Normally  snmpwalk
48               uses  GETNEXT  requests starting with the OID you specified and
49               returns all results in the MIB  subtree  rooted  at  that  OID.
50               Sometimes,  you  may  wish  to include the OID specified on the
51               command line in the printed results if it is a valid OID in the
52               tree itself.  This option lets you do this explicitly.
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54       -CI     In  fact,  the given OID will be retrieved automatically if the
55               main subtree walk returns no useable  values.   This  allows  a
56               walk  of a single instance to behave as generally expected, and
57               return the specified instance value.   This  option  turns  off
58               this final GET request, so a walk of a single instance will re‐
59               turn nothing.
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61       -Cp     Upon completion of the walk,  print  the  number  of  variables
62               found.
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64       -Ct     Upon completion of the walk, print the total wall-clock time it
65               took to collect the data (in seconds).  Note that the timer  is
66               started  just  before  the beginning of the data request series
67               and stopped just after it  finishes.   Most  importantly,  this
68               means  that  it  does  not include snmp library initialization,
69               shutdown, argument processing, and any other overhead.
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71       In addition to these options, snmpwalk takes  the  common  options  de‐
72       scribed in the snmpcmd(1) manual page.
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EXAMPLES

75       Note  that snmpwalk REQUIRES  an argument specifying the agent to query
76       and at most one OID argument, as described there.  The command:
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78       snmpwalk -Os -c public -v 1 zeus system
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80       will retrieve all of the variables under system:
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82       sysDescr.0 = STRING: "SunOS zeus.net.cmu.edu 4.1.3_U1 1 sun4m"
83       sysObjectID.0 = OID: enterprises.hp.nm.hpsystem.10.1.1
84       sysUpTime.0 = Timeticks: (155274552) 17 days, 23:19:05
85       sysContact.0 = STRING: ""
86       sysName.0 = STRING: "zeus.net.cmu.edu"
87       sysLocation.0 = STRING: ""
88       sysServices.0 = INTEGER: 72
89       (plus the contents of the sysORTable).
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91       The command:
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93       snmpwalk -Os -c public -v 1 -CE sysORTable zeus system
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95       will retrieve the scalar values, but omit the sysORTable.
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SEE ALSO

98       snmpcmd(1), snmpbulkwalk(1), variables(5).
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102V5.9.3                            28 May 2007                      SNMPWALK(1)
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