NAME

       nfreplay - netflow replay program

SYNOPSIS

       nfreplay [options] [filter]

DESCRIPTION

       nfreplay is the netflow replay program of the nfdump tool set.  It reads data from files stored by nfcapd
       and sents the netflow data to a host or a multicat group. The filter syntax is equivalent to nfdump. If a
       filter  is  supplied,  only  the  matching  flows  are  sent.   See the nfdump(1) man page for a detailed
       description of the filter syntax. All records are sent as netflow version 5.

OPTIONS

       -H remotehost
          Send all flows to this remote host. Accepts a symbolic name or a IPv4/IPv6 IP  address.   Defaults  to
          IPv4 localhost 127.0.0.1.

       -j mcastgroup
          Join  this multicast group and send all flows to this group host. Accepts a symbolic name or multicast
          IPv4/IPv6 IP address.

       -p port
          Send all flows to this port on the remote side. Default is 9995.

       -4 Forces nfreplay to send flows to a IPv4 address only. Can be used together with -i if the remote  host
          has an IPv4 and IPv6 address record.

       -6 Forces  nfreplay to send flows to a IPv6 address only. Can be used together with -i if the remote host
          has an IPv4 and IPv6 address record.

       -v num
          Send flows as netflow version num. 5 and 9 are supported. The default is sending the flows as  netflow
          version 5. In version 5 mode, IPv6 flows, are skipped and 64bit counters are truncated to 32bit.

       -d usec
          Delay each record by usec mirco seconds, to avoid overrun on the remote side. Default is 10.

       -b buffersize
          Set send buffer size in bytes. Useful for large data to transfer. Default is system dependent.

       -r inputfile
          Read input data from inputfile. Default is read from stdin.

       -t timewin
          Send    only    flows,    which    fall    in    the   time   window   timewin,   where   timewin   is
          YYYY/MM/dd.hh:mm:ss[-YYYY/MM/dd.hh:mm:ss]. Any parts of the time spec may be  omitted  e.g  YYYY/MM/dd
          expands to YYYY/MM/dd.00:00:00-YYYY/MM/dd.23:59:59 and sends all flow from a given day.

       -z num
          Flows are sent with their "real distribution" acrross time (with a speed coefficient) -z 1 : 5 minutes
          of records will be sent in 5 minutes.  -z 20 : 5 minutes of  record  will  be  sent  in  5/20  =  0.25
          minutes.

       -c num
          Limit number of records to send to the first num flows.

       -V Print nfreplay version and exit.

       -h Print help text on stdout with all options and exit.

RETURN VALUE

       Returns
           0   No error.
           255 Initialization failed.
           254 Error in filter syntax.
           250 Internal error.

NOTES

SEE ALSO

       nfcapd(1), nfdump(1), nfprofile(1)

BUGS

                                                   2009-09-09                                        nfreplay(1)