netflow export on Cisco 2821

[bastianbrachner]

Hello,

a question or more a problem with netflow exports on Cisco 2821's.
I configured netflow export on a Cisco 2821 with IOS Version 12.4(24)T

ip cef
...
interface FastEthernet0/0/0
description to XXX
ip address XXX
ip flow ingress
ip flow egress
duplex full
speed 10
...
ip flow-cache timeout active 1
ip flow-export source GigabitEthernet0/0
ip flow-export version 5
ip flow-export destination XXX XXX
!
...

The netflow collector shows "only ingoing traffic" on interface FastEthernet0/0/0 and
"only outgoing traffic" on interface GigabitEthernet0/0.
Same problem with an IOS Version 12.4(20)T1 on other Cisco 2821's.
But same configuration on other Cisco 2821's with IOS Version 12.4(11)XJ4 work well.

Any references/suggestions or explanations?

[yjdabear]

It's surprising to me that it's even possible to configure both directions on a single interface. I thought it's generally not a good idea to configure both directions among interfaces on a single router.

How's g0/0 configured "ip flow" wise? Maybe you're seeing "only outgoing traffic" on interface GigabitEthernet0/0, because those are incoming through fa0/0/0 (where IOS ignores the "ip flow egress" part) and going out through g0/0?