Chapter 2 Using the NetFlow Collector User Interface
Configuration
Bit Field
The Bit Field key builder obtains a subset of bits from a field in a flow. It has the following attributes.
Attribute | Description |
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Output name | Column name in output; defaults to the field ID if |
| not specified. |
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Field | ID of the field in a flow from which to extract bits. |
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Least significant bit | Least significant bit of interest (starts at 0). |
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Number of bits | Number of bits of interest. |
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Format | Decimal or hexadecimal. |
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Allow null value | If not selected, an error is logged if a flow does not |
| contain the indicated field. |
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Boolean
A Boolean key builder maps flow values to true, false, or undefined. The Boolean key builder has the following attributes.
Attribute
Output name
Field
Allow null value
Description
Column name in output; defaults to the field ID if not specified.
ID of the field in a flow containing the value of interest.
If not selected, an error is logged if a flow does not contain the indicated field.
Byte Array
A Byte Array key builder outputs bytes from flow data in hexadecimal format. The Byte Array key builder has the following attributes.
Attribute
Output name
Field
Offset
Length
Allow null value
Description
Column name in output.
ID of the field to obtain from a flow.
Starting byte offset from the beginning of the field in the flow. Set to zero if not specified.
Number of bytes of interest, from the offset to the end of field data if not specified.
If not selected, an error is logged if a flow does not contain the indicated field.
| Cisco NetFlow Collector User Guide |
