Nortel Networks 5520, 5510 manual 5530-24TFDconfig#show qos if-shaper port

Filters and QoS Configuration for ERS 5500
Technical Configuration Guide	v2.0	NN48500-559

•For the 10 GigE module only, available for the Ethernet Routing Switch 5530, it supports bucket sizes of 4K, 8K, 16K, 32K, 64K, 128K, 256K, 512K, 1024K, 2048K, 4096K, and 8192K.

•If you do not specify maximum burst duration when setting up a shaper, the maximum bucket size will be automatically set. For all 10/100 Mbps and 1 GigE ports, the maximum bucket size is 512K. Also, it does not matter what value you enter for the maximum burst rate as long as it is larger than the committed rate.

Example

Let’s assume you wish to set the committed rate to 40M and set the bucket size to 4K for port 8. To accomplish this, please use the following commands:

1. Calculate the duration, expressed in milliseconds.

Using the actual bucket size from table 7 and a maximum burst rate of 50M

•Duration = ((bucketSize*8) / (max-burst-rate – committed-rate))

•Duration = ((4,096 * 8) / (50,000,000 – 40,000,000))

•Duration = 3.2768 ms

•Rounded down, the duration value is 3 ms

2.Next, enter the following commands on the Ethernet Switch 5500. Enter an in profile action id of 3 for an in profile action of Bronze. Enter an out of profile action of 1 for an out of profile action of drop traffic.

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

•5530-24TFD(config-if)#qos if-shaper port 8 shape-rate 40000 max-burst-rate 50000 max-burst-duration 3

3.Use the following command to view the shaper just configured.

•5530-24TFD(config)#show qos if-shaper port 8

Unit Port IfIndex			Name	Rate	Burst
					Size
				(Kbps)	(Bytes)
____ ____ _______ ________________ ________					________
1	8	8		40000	4096

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