Nortel Networks 5510, 5520, 5530 5.3 Interface Shaper

Filters and QoS Configuration for ERS 5500

Technical Configuration Guide v2.0 NN48500-559

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External Distribution

The following table displays all various bucket size and durat ion values available using the

committed and maximum burst values used in this example.

Table 8: Meter Bucket Size and Duration

Bucket Size Max burst rate Committed rate Duration Value to enter

(mSec)

4,096 15000000 10000000 0.0065536 7

8,192 15000000 10000000 0.0131072 13

16,384 15000000 10000000 0.0262144 26

32,768 15000000 10000000 0.0524288 52

65,536 15000000 10000000 0.1048576 105

131,072 15000000 10000000 0.2097152 210

262,144 15000000 10000000 0.4194304 419

524,288 15000000 10000000 0.8388608 839

1,048,576* 15000000 10000000 1.6777216 1678

2,097,152* 15000000 10000000 3.3554432 3355

8,388,608* 15000000 10000000 13.4217728 13422

* ERS5530 10GE only

5.3 Interface Shaper

When configuring interface shaping, the shape rate, burst rate, and burs t duration can be

configured using the following command:

• 5530-24TFD(config)#interface fastEthernet all

• 5530-24TFD(config-if)#qos if-shaper port <port #> shape-rate <64-10230000

Kbits/sec> max-burst-rate <64-4294967295 Kbits/sec> max-burst-duration <1-

4294967295 milliseconds>

QoS interface shaping parameters:

Parameter Description

<portlist> Ports to configure shaping parameters.

<WORD> Specify name for if-shaper; maximum is 16 alphanumeric characters.

shape-rate

<64-10230000> Shaping rate in kilobits/sec; range is 64-10230000 kilobits/sec.

max-burst-rate

<64-4294967295> Maximum burst rate in kilobits /sec; range is 64-4294967295Kbits/sec.

max-burst-duration

<1-4294967295> Maximum burst duration in milliseconds; range is 1 to 4294967295 m s.

When configuring interface shaping on an interface, please note the f ollowing:

• The maximum burst rate cannot be configured the same as the shape rate. You m ust

always specify a higher maximum burst rate than the shape rate

• The maximum burst rate and burst duration is used to calculate the buck et size or

committed burst in bytes

• The maximum burst rate and burst duration is used to calculate the buck et size or

committed burst in bytes

o Duration = ((bucketSi ze*8) / (max-burst-rate – committed-rate))

• Bucket sizes in bytes are 4K, 8K, 16k, 32K, 64K, 128K, 256K, and 512K