- Allied Telesis, Inc Switches Owner's Manual

Page 16 | AlliedWare™ OS How To Note: QoS configuration

Full QoS scenario

: tiered services for a single customer

The Gold traffic must be strictly limited to 2Mbps

This is achieved by configuring a maxbandwidth on that traffic class, and dropping

bandwidthclass 3 traffic:

set qos trafficclass=3 maxbandwidth=2mbps maxburst=20Kbytes

dropbwclass3=true

For silver traffic, there is preferential treatment for the first 5Mbps of traffic. So, when there

is congestion, you want to still be getting 5Mbps of Silver traffic through, if possible.

This is achieved by putting bandwidth limits on both Silver and Bronze traffic, and using RED

curves to shape the throughput back to those limits when congestion occurs.

set qos trafficclass=2 maxbandwidth=5Mbps maxburst=30Kbytes

set qos trafficclass=1 maxbandwidth=<egresslimit-7> maxburst=<burst>

set qos red=1 queue=2 start1=40KB stop1=60KB start2=7KB stop2=12KB

start3=5KB stop3=10KB

set qos red=1 queue=1 start1=20KB stop1=50KB start2=5KB stop2=10KB

start3=2KB stop3=6KB

set qos port=24 red=1

X Step 3—Set the bandwidth limits