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Technical Configuration Guide v2.0 NN48500-559
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5.1 Actual Bucket Size
When configuring a meter or shape rate, a fixed token bucket is also configured which is derived
from the committed rate, burst rate, and burst duration configured. If a burst duration is not
configured, the largest bucket size is automatically selected which would be 512K for a 10/100
Mbps or 1 GigE port. If you wish to use another bucket size, you must calculate the burst duration
by using the actual size of the bucket - Sections 5.2 and 5.3 provide examples. The following
table, Table 7, shown below displays the actual bucket size in bytes.
Table 7: Actual Bucket Size in Bytes
Bucket Size Actual size in bytes Interface
4K 4,096 10/100 Mbps and GigE
8K 8,192 10/100 Mbps and GigE
16K 16,384 10/100 Mbps and GigE
32K 32,768 10/100 Mbps and GigE
64K 65,536 10/100 Mbps and GigE
128K 131,072 10/100 Mbps and GigE
256K 262,144 10/100 Mbps and GigE
512K 524,288 10/100 Mbps and GigE
1024K 1,048,576 10 GigE (5530)
4096K 2,097,152 10 GigE (5530)
8192K 8,388,608 10 GigE (5530)
5.2 Policing Traffic
When configuring traffic policing, the committed rate, burst rate, and burst duration can be
configured using the following command:
• 5530-24TFD(config)#qos meter <1-55000> committed-rate <64-10230000 Kbits/sec>
max-burst-rate <64-4294967295 Kbits/sec> max-burst-duration <1-4294967295
Milliseconds> in-profile-action <1-55000> out-profile-action [<1-1>|<9-55000>]
QoS parameters:
Parameter Description
<1-55000> Enter an integer to specify the QoS meter; range is 1 to 55000.
name <WORD> Specify name for meter; maximum is 16 alphanumeric
characters.
committed-rate
<64-10230000>
Specifies rate that traffic must not exceed for extended periods to
be considered in-profile. Enter the rate in Kb/s for in-profile traffic
in increments of 1000 Kbits/sec; range is 64 to 10230000
Kbits/sec.
max-burst-rate
<64-4294967295>
Specifies the largest burst of traffic that can be received in a
given time for the traffic to be considered in-profile. Used in
calculating the committed burst size. Enter the burst size in Kb/s
for in-profile traffic; range is 64 to 294967295 Kbits/sec
max-burst-duration
<1-4294967295>
Specifies the amount of time that the largest burst of traffic can
be received for the traffic to be considered in-profile. Used in
calculating the committed burst size. Enter the burst duration in
ms for in-profile traffic; range is 1 to 4294967295 ms.
in-profile-action <1-55000> Specify the in-profile action ID; range is 1 to 55000.
in-profile-action-name
<WORD>
Specify the in-profile action name.