QoS Policies
7210 SAS D, E, K OS Quality of Service Guide Page 37
• Closest: Find the next multiple of 64 kbps that is closest to the specified rate.
Table 8 lists the rate values configured in the hardware when different PIR or CIR rates are
specified in the CLI.
NOTE: If user has configured any value greater than 0 and less than 64 then the operational rate
configured on hardware would be 64 kbps irrespective of the constraint used.
Adaptation Rule for Meters in 7210 SAS-D Devices
Hardware supports meter rates in the multiples of 8 kbps for the entire range of CIR or PIR rates
supported on the device. The system identifies the best operational rate depending on the defined
constraint. The supported constraints are listed below:
• Minimum: The system identifies the next multiple of 8 kbps that is equal to or higher than
the specified rate.
• Maximum: The system identifies the next multiple of 8 kbps that is equal to or less than
the specified rate.
• Closest: The system identifies the next multiple of 8 kbps that is closest to the specified
rate.
Committed Burst Size (For Meters/Policers)
The committed burst size parameter specifies the maximum burst size that can be transmitted by
the source at the CIR while still complying with the CIR. If the transmitted burst is lower than the
CBS value then the packets are marked as in-profile by the meter to indicate that the traffic is
complying meter configured parameters.
Table 8: Administrative Rate Example for 7210 SAS-E
Administrative Rate Operation Rate
(Min)
Operation Rate
(Max)
Operation Rate
(Closest)
64 64 64 64
65 128 64 64
127 128 64 128
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