NetFlow statistics not coming completely

Hi All,

I have 8 MB MPLS link connected to Coreswitch (4507) at my DC, hope we all know that 4507 will not support to configure netflow unless add some external card.

The MPLS is managed by provider, they have edge 2811 router at my DC, so I asked them to configure netflow on our interface in their router (2811). They have configured as like below.

(config)#ip flow-export source Fa0/0

(config)#ip flow-export version 5

(config)#ip flow-export destination 10.246.6.50 9996

(config)#int Fa0/1

(config-if)#ip route-cache flow

After completion the config, they verified #sh ip flow export and got the below details...

#sh ip flow export Flow export v5 is enabled for main cache

Export source and destination details :

VRF ID : Default

Source(1) 10.246.2.10 (FastEthernet0/0)

Destination(1) 10.246.6.50 (9996)

Version 5 flow records

12 flows exported in 4 udp datagrams

0 flows failed due to lack of export packet

0 export packets were sent up to process level

0 export packets were dropped due to no fib

0 export packets were dropped due to adjacency issues

0 export packets were dropped due to fragmentation failures

0 export packets were dropped due to encapsulation fixup failures

But the problems is I am not getting the complete statistics even the 8 MB line is utilizing morethan 50%. Remaining devices are giving complete details as per the utilization on the line.

Experts, can anyone look into this and guide me what is wrong and what needs to be correct.

Thanks & Regards,

Naidu.