Which three characteristics of the traffic flow are taken into consideration when the OoS-for-VPNs feature （OoS pre-classify） provides packet classification and applies appropriate OoS service on tunnel interfaces？ （）
- A、IP precedence bits
- B、DSCP bits
- C、original port numbers
- D、DE bits
- E、source IP address
- F、destination IP address
正确答案:C,E,F
答案解析:有
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