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2NFREPLAY(1)               BSD General Commands Manual              NFREPLAY(1)
3

NAME

5     nfreplay — replay binary flow files as netflow version v5 or v9 to a re‐
6     mote host
7

SYNOPSIS

9     nfreplay -r flowfile -H remotehost -p port [-j mcastgroup] [-4] [-6]
10              [-v version] [-d usec] [-b buffsize] [-z num] [-c num] [-v] [-H]
11              [filter]
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DESCRIPTION

14     nfreplay reads binary flow files stored by any nfdump collector and sents
15     the flow records to a remote host or a multicat group.
16
17     nfreplay sends the data as netflow v5 or v9 to the remote location.
18
19     nfreplay accepts a filter to limit the flows to be sent. The filter syn‐
20     tax is equivalent to nfdump.
21
22     The options are as follows:
23
24     -r flowfile
25             Read input data from flowfile.
26
27     -H remotehost
28             Send all flows to this remote host. Accepts a symbolic name or a
29             IPv4/IPv6 IP address.
30
31     -j mcastgroup
32             Join this multicast group and send all flows to this group host.
33             Accepts a symbolic name or multicast IPv4/IPv6 IP address.
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35     -p port
36             Send all flows to this port on the remote side. Default is 9995.
37
38     -4      Forces nfreplay to send flows to a IPv4 address only. Can be used
39             if the remote host has an IPv4 and IPv6 address record.
40
41     -6      Forces nfreplay to send flows to a IPv6 address only. Can be used
42             if the remote host has an IPv4 and IPv6 address record.
43
44     -v version
45             Send flows as netflow version version.  Version V5 and v9 are
46             supported. In v5 mode, all additional elements to a stadard v5
47             record are skipped and 64bit counters are truncated to 32bit.
48             The default is v9.
49
50     -u usec
51             Delay each record by usec mirco seconds, to avoid overrun on the
52             remote host. Default is 10usec.
53
54     -B buffsize
55             Set send buffer to buffsize size in bytes. Useful to buffer
56             larger data transfers.
57
58     -z num  Flows are sent with their "real distribution" acrross time (with
59             a speed coefficient)
60             -z 1 : 5 minutes of records will be sent in 5 minutes.  - z 20 :
61             5 minutes of record will be sent in 5/20 = 0.25 minutes.
62
63     -c num  Limit number of records to send to the first num flows.
64
65     -V      Print nfreplay version and exit.
66
67     -h      Print help text on stdout with all options and exit.
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RETURN VALUES

70     nfreplay returns
71     255 Initialization failed.
72     254 Error in filter syntax.
73     250 Internal error.
74

SEE ALSO

76     nfdump(1) nfcapd(1)
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78BSD                            February 6, 2023                            BSD
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