policy qos name <policy-name> shaper class <class-id> match <rule-name> police frame-overhead <overhead>
Adjusts the allowance for the frame overhead when policing traffic for bandwidth for a QoS policy class.
policy- This keyword exists for 'organizational' purposes only, to structure the configuration path for relevant command strings.
qos- This keyword exists for 'organizational' purposes only, to structure the configuration path for relevant command strings.
name <policy-name>- Specifies the name of a QoS policy.
shaper- This keyword exists for 'organizational' purposes only, to structure the configuration path for relevant command strings.
class <class-id>- Specifies the numeric identifier of a QoS policy class.
match <rule-name>- Specifies the name of a matching rule.
police- This keyword exists mainly for 'organizational' purposes, to structure the configuration path for relevant command strings. However, it also introduces some additional bandwidth or rate limit restrictions on packets that the system identifies by the match rule that you specify elsewhere in the command string.
frame-overhead <overhead>Defines an additional allowance to the length of a packet in bytes that a shaper can make during calculation of bandwidth. You can adjust this to make the QoS scheduler more accurate.
The QoS scheduler only knows the size of the L3 packet. The size of the L2 frame header can vary in size depending upon whether or not a VLAN header is present. By default the QoS scheduler allows for a 24 bytes L2 frame header. If the L2 frame header is bigger than 24 bytes then the QoS scheduler may send more traffic than the maximum bandwidth permits.