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Langue: en

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Version: 28 Январь 2009 (fedora - 04/07/09)

Section: 1 (Commandes utilisateur)


flow-import - Import flows into flow-tools from other NetFlow packages.


flow-import [ -h ] [ -b big|little ] [ -d debug_level ] [ -f format ] [ -m mask_fields ] [ -V pdu_version ] [ -z z_level ]


The flow-import utility will convert data from cflowd and ASCII CSV files into flow-tools format.


-b big|little
Byte order of output.
-d debug_level
Enable debugging.
-f format
Export format. Supported formats are:
   0 cflowd
   3 Cisco NFCollector
Display help.
-m mask_fields
Select fields for cflowd and ASCII formats. The mask_fields is built from a bitwise OR of the following:
     UNIX_SECS       0x0000000000000001LL
     UNIX_NSECS      0x0000000000000002LL
     SYSUPTIME       0x0000000000000004LL
     EXADDR          0x0000000000000008LL
     DFLOWS          0x0000000000000010LL
     DPKTS           0x0000000000000020LL
     DOCTETS         0x0000000000000040LL
     FIRST           0x0000000000000080LL
     LAST            0x0000000000000100LL
     ENGINE_TYPE     0x0000000000000200LL
     ENGINE_ID       0x0000000000000400LL
     SRCADDR         0x0000000000001000LL
     DSTADDR         0x0000000000002000LL
     SRC_PREFIX      0x0000000000004000LL
     DST_PREFIX      0x0000000000008000LL
     NEXTHOP         0x0000000000010000LL
     INPUT           0x0000000000020000LL
     OUTPUT          0x0000000000040000LL
     SRCPORT         0x0000000000080000LL
     DSTPORT         0x0000000000100000LL
     PROT            0x0000000000200000LL
     TOS             0x0000000000400000LL
     TCP_FLAGS       0x0000000000800000LL
     SRC_MASK        0x0000000001000000LL
     DST_MASK        0x0000000002000000LL
     SRC_AS          0x0000000004000000LL
     DST_AS          0x0000000008000000LL
     IN_ENCAPS       0x0000000010000000LL
     OUT_ENCAPS      0x0000000020000000LL
     PEER_NEXTHOP    0x0000000040000000LL
     ROUTER_SC       0x0000000080000000LL
     EXTRA_PKTS      0x0000000100000000LL
     MARKED_TOS      0x0000000200000000LL

The default value is all fields applicable to the pdu_version.

-V pdu_version
Use pdu_version format output.
     1    NetFlow version 1 (No sequence numbers, AS, or mask)
     5    NetFlow version 5
     6    NetFlow version 6 (5+ Encapsulation size)
     7    NetFlow version 7 (Catalyst switches)
     8.1  NetFlow AS Aggregation
     8.2  NetFlow Proto Port Aggregation
     8.3  NetFlow Source Prefix Aggregation
     8.4  NetFlow Destination Prefix Aggregation
     8.5  NetFlow Prefix Aggregation
     8.6  NetFlow Destination (Catalyst switches)
     8.7  NetFlow Source Destination (Catalyst switches)
     8.8  NetFlow Full Flow (Catalyst switches)
     8.9  NetFlow ToS AS Aggregation
     8.10 NetFlow ToS Proto Port Aggregation
     8.11 NetFlow ToS Source Prefix Aggregation
     8.12 NetFlow ToS Destination Prefix Aggregation
     8.13 NetFlow ToS Prefix Aggregation
     8.14 NetFlow ToS Prefix Port Aggregation
     1005 Flow-Tools tagged version 5
-z z_level
Configure compression level to z_level. 0 is disabled (no compression), 9 is highest compression.


Convert the cflowd file flows.cflowd to the flow-tools file flows. Store as Version 5 with compression level 5.

flow-import -V5 -z5 -f0 < flows.cflowd > flows


Convert the ASCII CSV data in flows.ascii to flow-tools format. The ASCII data must include all fields represented by 0xFF31EF in the order listed above. Store as Version 5 with no compression.

flow-import -z0 -f2 -m0xFF31EF < flows.ascii > flows


The pcap format is a hack.


Mark Fullmer <>



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