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If user has configured any value greater than 0 and less than 8 then operation rate configured on
hardware would be 8 kbps irrespective of the constraint used.
Note:
•
Committed Burst Size
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.
The operational CBS set by the system is adapted from the user configured value by using the
minimum constraint.
Maximum Burst Size
For trTCM, the maximum burst size parameter specifies the maximum burst size that can be
transmitted by the source at the PIR while complying with the PIR. If the transmitted burst is
lower than the MBS value then the packets are marked as out-profile by the meter to indicate that
the traffic is not complying with CIR, but complying with PIR.
For srTCM, the maximum burst size parameter specifies the maximum burst size that can be
transmitted by the source while not complying with the CIR. If the transmitted burst is lower than
the MBS value then the packets are marked as out-profile by the meter to indicate that the traffic is
not complying with CIR.
If the packet burst is higher than MBS then packets are marked as red are dropped.
The operational MBS set by the system is adapted from the user configured value by using the
minimum constraint.
Meter Counters
The 7210 SAS devices maintains the following counters for meters within the system for granular
billing and accounting. Each meter maintains the following counters:
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
The burst size configured by the user affects the rate step-size used by the system. The
system uses the step size in a manner that both the burst-size and rate parameter
constraints are met. For example, if the rate specified is less than 4Gbps but the burst size
configured is 17Mbits, then the system uses rate step-size of 16Kbits and burst step-size of
8192bits (refer to
Table
9, row#2)
QoS Policies
Page 33
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