Problem getting netflow forwarded from Nexus VDC

[wrichardson99]

I have sets of Nexus 7706's that each have 3 VDC's.   The Admin, a Data Center VDC (inside routes) and a OTV  VDC.  I've enabled netflow on all the VDC's and added Netflow configs for the OTV VDC.  While it can ping the Netflow collector server (Solarwinds NTA) and the server shows the switch as a Netflow device it won't add the netflow interface and show the traffic. Are there some specific issues with sending netflow from a VDC to collectors in this setup. 

FYI  the Nexus OTV has the OTV overlay 0 interface (layer 2) traffic connecting to next DC Overlays. Then forwarding traffic to the local  DC via a port-channel running OSPF and one management interface, nothing else really defined on that VDC. 

Ideas, feedback welcome,

[Georg Pauwen]

Hello,

tough one. There are a number of hardware limitations (link below), make sure you are not running into any of these.

Can you post the relevant parts of the Nexus configuration ?

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus7000/sw/system-management/guide/b_Cisco_Nexus_7000_Series_NX-OS_System_Management_Configuration_Guide/b_Cisco_Nexus_7000_Series_NX-OS_System_Management_Configuration_Guide_chapter_011000....

[wrichardson99]

Thanks for the links I'll check that out.  

Config is fairly simple: 

flow record ORION-FLOW
description Custom Netflow Record
match ipv4 source address
match ipv4 destination address
match transport destination-port
match transport source-port
collect counter bytes
collect counter packets
!
flow exporter ORION-EXPORTER
description ORION Netflow Monitor
destination 10.10.2.40
transport udp 2055
source port-channel6
version 9

!
sampler orion-sampler
mode 1 out-of 100

!
flow monitor ORION-MONITOR
description ORION Netflow Monitor
record ORION-FLOW
exporter ORION-EXPORTER
!
interface port-channel 11
ip flow monitor ORION-MONITOR output sampler orion-sampler
ip flow monitor ORION-MONITOR input sampler orion-sampler
!