Nde On The Pfc3B - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Understanding NDE
NetFlow Data Export (NDE) converts the NetFlow table statistics into records and exports the records
to an external device, which is called a NetFlow collector.
You can configure NDE to export statistics for both routed and bridged traffic.
You can export IP unicast statistics using NDE record format versions 5, 7 or 9. Use NDE version 8
record format for NetFlow aggregation, and version 9 record format for IP multicast.
Exporting a large volume of statistics can significantly impact SP and RP CPU utilization. You can
control the volume of records exported by configuring NDE flow filters to include or exclude flows from
the NDE export. When you configure a filter, NDE exports only the flows that match the filter criteria.
You can configure up to two external data collector addresses. A second data collector improves the
probability of receiving complete NetFlow data by providing redundant data streams.
NDE on the PISA
NDE on the PISA exports statistics for flows routed in software. The PISA supports NetFlow
aggregation, described in this document:
Cisco IOS NetFlow Configuration Guide.
The PISA also supports NetFlow ToS-based router aggregation, described in this document:
Cisco IOS NetFlow Configuration Guide.
NetFlow Sampling is supported on the PISA and is described in this document:
Cisco IOS NetFlow Configuration Guide.
NetFlow version 9 is supported and is described in this document:
Cisco IOS NetFlow Configuration Guide.
NetFlow version 9 record formats are described in this document:
Cisco IOS NetFlow Configuration Guide.

NDE on the PFC3B

NDE on the PFC3B exports statistics for flows routed or bridged in hardware. These sections describe
NDE on the PFC3B in more detail:
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NDE Flow Mask
You can configure the minimum NetFlow flow mask for NDE. The NetFlow flow mask determines the
granularity of the statistics gathered, which controls the volume of statistics for NDE to export.
For more details about flow masks, refer to
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
46-2
NDE Flow Mask, page 46-2
NDE Versions, page 46-3
Exporting NetFlow Data, page 46-7
NetFlow Sampling, page 46-7
Chapter 47, "Configuring
Chapter 46 Configuring NDE
NetFlow".
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