Hi, we have a local Netflow collector working fine. We also have a centralised collector that we’d like to use to send the same Netflow data, but it is not being received. We need to send the data via an IPSEC VPN.
When I do a 'show flow-export counters' I can see the packets sent increasing. The local collector is receive netflow data. I am using the below config,
Any pointers of what’s going wrong greatly appreciated.
Is the source interface for NetFlow export the IPSec tunnel? If so, it is a limitation of NetFlow that, when exported over IPSec, self originating NetFlow packets are not exported. The solution is to use Flexible NetFlow (FNF - NetFlow v9) but Cisco ASA currently does not support FNF.
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