netflow and management interface again

[tiwang]

hi out there

I have a couple of Cisco ISR 4431 routers with IOSXE 16.12 running with a INTERNET vrf and the default Mgmt-intf vrf for management.

Now have I defined a netflow exporter with source from Gig 0 - in vrf Mgmt-intf - and flow recorder collecting from interfaces in vrf INTERNET - and I of course got a bit surprised that apparently it doesnt export any data to our Solarwinds poller.

Is there a simple way to trix that ? - here is my config for the Exporter:

flow exporter SWExport
destination 192.168.1.100 -> server reached trough Mgmt-intf VRF
source GigabitEthernet0
transport udp 2055
template data timeout 120
option application-table timeout 120
option application-attributes timeout 300

[marce1000 · Accepted solution]

 - This may not be supported , check these threads :

         https://community.cisco.com/t5/network-management/no-netflow-export-on-management-interface-gig0-of-isr-4431/td-p/2992691

        https://community.cisco.com/t5/network-management/unable-to-export-netflow-on-asr1006-gig0-interface/td-p/3880565

 M.

[balaji.bandi]

So you looking to 2 VRF one source VRF in different VRF and destination sending different different VRF ?

[tiwang]

well - not really - the problem here is the vrf Mgmt-intf - this router is a internet edge router where the management interface is used to connect internally - and therefor would be the simplest and cleanest way to get the netflow to our SolarWinds servers 

So yes - I try to use 2 vrf's but the problem her is that the only vrf which has access to our network as it is now is the management vrf Mgmt-vrf - how does other solve this in a elegant way?

[tiwang]

looks as if the vrf Mgmt-intf is not useable as source for the netflow setup. The simplest solution is probably to bang the sessions trough our firewall from the vrf INTERNET 

[balaji.bandi]

yes you can use destination as VRF Managment to sent to Netflow Server, that can be as Source you are correct.

yes easy way do it better as you mentioned. glad all good.