SNMPDELTA(1)                                                Net-SNMP                                                SNMPDELTA(1)



NAME
       snmpdelta - Monitor delta differences in SNMP Counter values

SYNOPSIS
       snmpdelta  [ common options ] [-Cf] [ -Ct ] [ -Cs ] [ -CS ] [ -Cm ] [ -CF configfile ] [ -Cl ] [ -Cp period ] [ -CP Peaks
       ] [ -Ck ] [ -CT ] AGENT OID [ OID ... ]

DESCRIPTION
       snmpdelta will monitor the specified integer valued OIDs, and report changes over time.

       AGENT identifies a target SNMP agent, which is instrumented to monitor the given objects.  At  its  simplest,  the  AGENT
       specification  will  consist of a hostname or an IPv4 address.  In this situation, the command will attempt communication
       with the agent, using UDP/IPv4 to port 161 of the given target host. See snmpcmd(1) for a full list of the possible  for-
       mats for AGENT.

       OID  is  an object identifier which uniquely identifies the object type within a MIB. Multiple OIDs can be specified on a
       single snmpdelta command.

OPTIONS
       COMMON OPTIONS
               Please see snmpcmd(1) for a list of possible values for COMMON OPTIONS as well as their descriptions.

       -Cf     Don't fix errors and retry the request.  Without this option, if multiple oids have been specified for  a  single
               request  and  if the request for one or more of the oids fails, snmpdelta will retry the request so that data for
               oids apart from the ones that failed will still be returned.  Specifying -Cf  tells  snmpdelta  not  to  retry  a
               request, even if there are multiple oids specified.

       -Ct     Flag will determine time interval from the monitored entity.

       -Cs     Flag will display a timestamp.

       -CS     Generates  a  "sum count" in addition to the individual instance counts.  The "sum count" is the total of all the
               individual deltas for each time period.

       -Cm     Prints the max value ever attained.

       -CF configfile
               Tells snmpdelta to read it's configuration from the specified file.  This options allows the input to be  set  up
               in advance rather than having to be specified on the command line.

       -Cl     Tells  snmpdelta to write it's configuration to files whose names correspond to the MIB instances monitored.  For
               example, snmpdelta -Cl localhost ifInOctets.1 will create a file "localhost-ifInOctets.1".

       -Cp     Specifies the number of seconds between polling periods.  Polling constitutes sending a request to the agent. The
               default polling period is one second.

       -CP peaks
               Specifies  the  reporting  period in number of polling periods.  If this option is specified, snmpdelta polls the
               agent peaks number of times before reporting the results.  The result reported includes the  average  value  over
               the reporting period. In addition, the highest polled value within the reporting period is shown.

       -Ck     When  the  polling period (-Cp) is an increment of 60 seconds and the timestamp is displayed in the output (-Cs),
               then the default display shows the timestamp in the format hh:mm mm/dd. This option causes the  timestamp  format
               to be hh:mm:ss mm/dd.

       -CT     Makes snmpdelta print its output in tabular form.

       -Cv vars/pkt
               Specifies  the  maximum  number of oids allowed to be packaged in a single PDU. Multiple PDUs can be created in a
               single request. The default value of variables per packet is 60.  This option is useful  if  a  request  response
               results in an error becaues the packet is too big.

EXAMPLES
       $ snmpdelta -c public -v 1 -Cs localhost IF-MIB::ifInUcastPkts.3 IF-MIB::ifOutUcastPkts.3
       [20:15:43 6/14] ifInUcastPkts.3 /1 sec: 158
       [20:15:43 6/14] ifOutUcastPkts.3 /1 sec: 158
       [20:15:44 6/14] ifInUcastPkts.3 /1 sec: 184
       [20:15:44 6/14] ifOutUcastPkts.3 /1 sec: 184
       [20:15:45 6/14] ifInUcastPkts.3 /1 sec: 184
       [20:15:45 6/14] ifOutUcastPkts.3 /1 sec: 184
       [20:15:46 6/14] ifInUcastPkts.3 /1 sec: 158
       [20:15:46 6/14] ifOutUcastPkts.3 /1 sec: 158
       [20:15:47 6/14] ifInUcastPkts.3 /1 sec: 184
       [20:15:47 6/14] ifOutUcastPkts.3 /1 sec: 184
       [20:15:48 6/14] ifInUcastPkts.3 /1 sec: 184
       [20:15:48 6/14] ifOutUcastPkts.3 /1 sec: 184
       [20:15:49 6/14] ifInUcastPkts.3 /1 sec: 158
       [20:15:49 6/14] ifOutUcastPkts.3 /1 sec: 158
       ^C
       $ snmpdelta -c public -v 1 -Cs -CT localhost IF-MIB:ifInUcastPkts.3 IF-MIB:ifOutcastPkts.3
       localhost ifInUcastPkts.3     ifOutUcastPkts.3
       [20:15:59 6/14]     184.00    184.00
       [20:16:00 6/14]     158.00    158.00
       [20:16:01 6/14]     184.00    184.00
       [20:16:02 6/14]     184.00    184.00
       [20:16:03 6/14]     158.00    158.00
       [20:16:04 6/14]     184.00    184.00
       [20:16:05 6/14]     184.00    184.00
       [20:16:06 6/14]     158.00    158.00
       ^C

       The following example uses a number of options. Since the Cl option is specified, the output is sent to a file and not to
       the screen.

       $ snmpdelta -c public -v 1 -Ct -Cs -CS -Cm -Cl -Cp 60 -CP 60
         interlink.sw.net.cmu.edu .1.3.6.1.2.1.2.2.1.16.3 .1.3.6.1.2.1.2.2.1.16.4
       fi

SEE ALSO
       snmpcmd(1), variables(5).



4th Berkeley Distribution                                  25 Jul 2003                                              SNMPDELTA(1)