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With NCM 7.7, you can examine the rules that make up an access control list for a Cisco ASA device. Then you can apply filters to display only rules that meet the specified criteria, order the rules by line number or by the hit count, and much more.
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Home > Success Center > Netflow Traffic Analyzer (NTA) > No flow data seen for light traffic interfaces due to Top Talker Optimization setting

No flow data seen for light traffic interfaces due to Top Talker Optimization setting

Overview

The details page of a device shows "Data is not available" for all resources even when the time stamp for Last Received NetFlow is current for the interface (or node).

Environment

All versions of NTA

Resolution

  1. Open the NTA Console > Settings > NTA Settings > Top Talker Optimization.
  2. Change the setting to 100%.
  3. Click SAVE. This setting stores all flow data. 

 

 

Cause

By default, the NTA Top Talker Optimization setting is 95%. This setting captures the top consumers of bandwidth. With the default setting, about half of all flow data may be dropped as not important.

Last modified
14:12, 13 Nov 2015

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