flow-import(1) - Linux man page

Name

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

Synopsis

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

Description

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

Options

-b big|little

Byte order of output.

-d debug_level

Enable debugging.

-f format

Export format. Supported formats are:

0 cflowd
2 ASCII CSV
3 Cisco NFCollector

-h

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.

Examples

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

Examples

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

Bugs

The pcap format is a hack.

Author

Mark Fullmer <maf@splintered.net>

See Also

flow-tools(1)