Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help

       snmpbulkwalk  - retrieve	a subtree of management	values using SNMP GET-
       BULK requests


       snmpbulkwalk is an SNMP application that	uses SNMP GETBULK requests  to
       query a network entity efficiently 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  GETBULK  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 argu-
       ment is present,	snmpbulkwalk will search MIB-2.

       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.

       -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  snmpbulkwalk  to	 loop  indefi-
	       nitely.	By default, snmpbulkwalk tries to detect this behavior
	       and warns you when it hits an agent acting illegally.  Use  -Cc
	       to turn off this	behaviour.

       -Ci     Include	the given OID in the search range.  Normally snmpbulk-
	       walk uses GETBULK requests starting with	the OID	you  specified
	       and  returns all	results	in the MIB tree	after that OID.	 Some-
	       times, 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.

	       Set the non-repeaters field in the GETBULK PDUs.	  This	speci-
	       fies  the number	of supplied variables that should not be iter-
	       ated over.  The default is 0.

       -Cp     Upon completion of the walk,  print  the	 number	 of  variables

	       Set the max-repetitions field in	the GETBULK PDUs.  This	speci-
	       fies the	maximum	number of iterations over the repeating	 vari-
	       ables.  The default is 10.

       In addition to these options, snmpbulkwalk takes	the common options de-
       scribed in the snmpcmd(1) manual	page.  Note that snmpbulkget  REQUIRES
       an argument specifying the agent	to query and at	most one OID argument,
       as described above.

       The command:

       snmpbulkwalk -v2c -Os -c	public zeus system

       will retrieve all of the	variables under	system:

       sysDescr.0 = STRING: "SunOS 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: ""
       sysLocation.0 = STRING: ""
       sysServices.0 = INTEGER:	72

       In contrast to snmpwalk,	this information will typically	be gathered in
       a  single  transaction  with the	agent, rather than one transaction per
       variable	found.	snmpbulkwalk is	thus more efficient in terms  of  net-
       work  utilisation,  which  may  be especially important when retrieving
       large tables.

       As the name implies, snmpbulkwalk utilizes the  SNMP  GETBULK  message,
       which is	not available in SNMP v1.

       snmpcmd(1), variables(5).

V5.9				  01 May 2002		       SNMPBULKWALK(1)


Want to link to this manual page? Use this URL:

home | help