The router egress is configured with nat, and the flow system cannot match the traffic.
The approximate configuration is as follows:
Interface GigabitEthernet 0/0/0
Nat outbound 3000
Traffic-policy p1 inbound
Traffic-policy p1 outbound
Check the traffic statistics and find that there is no match to the packet
Successfully match to port traffic after the interface is configured with nat pre-shunt
Interface GigabitEthernet 0/0/
Qos pre-nat
