Why is the CAR or GTS sometimes incorrect

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The committed access rate (CAR) or generic traffic shaping (GTS) is set by the AR main control board or interface board based on traffic volume. If the CAR or GTS is set by the interface board, the accuracy depends on the granularity of the rate limit. Within a specified granularity range, all CAR or GTS values are correct. In addition, different bearer links may trigger the protocol encapsulation correction.

Other related questions:
Can the qos gts and qos car commands be used simultaneously for outgoing packets
The qos car command affects the qos gts command effect. You are not advised to run these two commands at the same time.

If a traffic policy is applied to different interfaces, are CAR and GTS shared by these interfaces
If a stream policy is applied on different interfaces, the committed access rate (CAR) bandwidth and generic traffic shaping (GTS) bandwidth are independent for each interface. For example, if the behavior in a traffic policy sets the speed limit to 10 Mbit/s, and the traffic policy is applied to different interfaces, each interface can individually occupy a maximum bandwidth of 10 Mbit/s.

Why do ACLs sometimes not take effect
The device delivers access control lists (ACLs) to MAC-based users only after the IP addresses are learned.

Why doesn't ACL delivery take effect sometimes?
For users who access a router based on MAC addresses, the router does not deliver an ACL until the router learns the IP addresses of the users.

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