Does my 2821 router support netflow V9?

[pjrivers01]

I am trying to set up a NetFlow analyzer, and wanted to enable NBAR.  My routers were configured with NetFlow V5, but I learned that I needed NetFlow V9.  I removed V5 and configured V9 and all of my links went down in the NFA. I was wondering if my 2821 routers were able to use NetFlow V9. 

[InayathUlla Sharieff]

Yes it does support.

{

!This defines the usage of Netflow v9
2821(config)# ip flow-export version 9 

!This command tells the router to send the flow to destination IP address on specified UDP port

2821(config)# ip flow-export destination 192.168.1.254 9991

!Configure flow on a particular interface

2821(config)# int gig0/0

2821(config-if)# ip flow ingress

2821(config-if)# exit

!Finally configure flow timeout in minutes

2821(config)# ip flow-cache timeout active 5

}

HTH

regards

Inayath

[pjrivers01]

Thank you for your quick response. I really do appreciate it.

This is the first config that allowed the analyzer to detect my routers:

ip flow-export version 5
ip flow-cache timeout active 1
ip flow-cache timeout inactive 15
ip flow-export destination A.B.C.D 9996 - Address changed
ip flow-export source g0/0

int g0/0
 ip route-cache flow

I then found this config for V9 to enable NBAR with my routers:

flow exporter NBAREXP                        
destination A.B.C.D  
source GigabitEthernet 0/0        
transport udp 9996              
export-protocol netflow-v9

flow record NBARREC
match ipv4 source address
match ipv4 destination address
match transport source-port
match transport destination-port
match interface input
match ipv4 protocol
match ipv4 tos
match ipv4 dscp
match application name        

collect routing source as
collect routing destination as
collect routing next-hop address ipv4
collect transport tcp flags
collect counter bytes
collect counter packets
collect timestamp sys-uptime first
collect timestamp sys-uptime last
collect interface output
collect flow direction
collect ipv4 id
collect ipv4 source mask
collect ipv4 destination mask

flow monitor NBARMON

exporter NBAREXP
record NBARREC
cache timeout active 1
cache timeout inactive 15

int GigabitEthernet 0/0
 ip flow monitor NBARMON input

I removed the previous V5 config and entered this one. As soon as I did this, I lost all connectivity with my routers.  I tried to tweek it, but had to remove this and re-install the V5 config.

I am just tyring to get my NetFlow Analyzer to collect NBAR info.

I have 2821 routers with adventerprisek9-mz.151-4.M10 for the image.  Now I am not sure how to get my NFA to read NBAR data.

Thanks again for your help