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Filters and QOS Configuration for Ethernet Routing Switch 5500
Technical Configuration Guide
25
January 2013
avaya.com
Bucket sizes in bytes are 4K, 8K, 16k, 32K, 64K, 128K, 256K, and 512K
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. Calculat e 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 i f-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