cancel
Showing results for 
Search instead for 
Did you mean: 
Create Post
Level 9

Netflow data not showing correctly for certain interfaces.

We have configured netflow on our network devices, we have many devices with different link speeds eg.  100 mbps, 1Gbps, 10 Gbps. The netflow data corresponds to the usage when the link speed is upto 100 Mbps. But when the interface speed is above 100 Mbps eg: 1Gbps or 10 Gbps. We are seeing big data difference between the netflow data and the current utilization.

Example:  We transferred about 200 Gb of data through a 10 Gb link within a certain period of time, but the netflow data is only showing around 10 Gb of data being transferred.

Any help is greatly appreciated.

Below  is the netflow  configuration it is a Cisco ASR 1006 Router

flow exporter export-to-BBU

description to BBU Netflow collector

destination Collector IP

source TenGigabitEthernet0/1/0

transport udp 2055

export-protocol netflow-v5

!

!

flow monitor FMforIP4in

exporter export-to-BBU

cache timeout active 60

cache entries 75000

record netflow-original

!

!

flow monitor FMforIP4out

exporter export-to-BBU

cache timeout active 60

cache entries 75000

record netflow-original

Tags (3)
0 Kudos
5 Replies
Level 12

Can you take a screenshot of the NPM Utilization?  Furthermore, can you provide evidence of the Discrepancy?

0 Kudos

DataDifference.png

0 Kudos

after around 8 45 we changed the collector from healthy 1 to faulty 1 . the Utilization got dropped .

0 Kudos

I'm not sure what the issue is but maybe you could change to netflow v9?

0 Kudos

We tried changing the netflow worsion but nothing changed.

0 Kudos