sampled netflow not accurate?

[wenxuan.tang]

We are employing sampled netflow on GSR16 running eBGP peer with other AS and FIFO queue,and i set sampling interval as 1000.

Now GSR16 exports the records to NFC ASDetailMatrix configured, but found flows always record only 1 packet,seldom 2 or 3 packet.These results are apparently inaccurate.

one of records as follows:

211.x.x.x|61.x.x.x|65210|Others|20|15|80|1343|80|1|576|1

Has anyone experient this technique?where could the problem be?

thanks.

[wenxuan.tang]

Does anybody know that?

HOW cisco solves that in yourself product, such as Application NDA (Network Data Analyzer).

In other words, Does the relation exist that sampling interval and ampliative value in applicaion's calculation; otherwise sampling netflow just for network trend,not for billing!

[ciscomoderator]

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center (http://www.cisco.com/tac) or speak with a TAC engineer. You can open a TAC case online at http://www.cisco.com/tac/caseopen

If anyone else in the forum has some advice, please reply to this thread.

Thank you for posting.