- Allied Telesis, Inc Switches Owner's Manual

Page 20 | AlliedWare™ OS How To Note: QoS configuration

Full QoS scenario 2: bandwidth limiting of multiple customers

create qos traff=9

set qos traff=9 maxband=5Mbps maxburst=10Kb dropbwc=yes

add qos traff=9 flow=9

create qos traff=10

set qos traff=10 maxband=2Mbps maxburst=10Kb dropbwc=yes

add qos traff=10 flow=10

create qos poli=6

add qos poli=6 traff=6-10

set qos port=24 poli=6

The ISP can offer to the customer a guarantee that VoIP traffic (up to a certain, relatively low,

bandwidth) will be given preferential treatment.

So, for each port, VoIP traffic will be classified into its own traffic class, and directed to a high-

priority egress queue.

Therefore, we need to classify VoIP traffic

create classifier=11 udpdport=5060

create classifier=12 udpdport=5061

create classifier=13 udpdport=5004 udpdmask=FFFE

create classifier=14 udpdport=16384 udpdmask=8000

The VoIP traffic needs to be associated to a traffic class that applies a strict max bandwidth,

and uses the premarking DSCP map to assign the traffic to a high priority queue (and to mark

the DSCP fields of the packets, for good measure).

set qos dscpmap=premarking dscp=55 newqueu=6 newdscp=55

So, the configuration for the QoS to be applied to the outgoing traffic now becomes:

set qos dscpmap=premarking dscp=55 newqueu=6 newdscp=55

create classifier=11 udpdport=5060

create classifier=12 udpdport=5061

create classifier=13 udpdport=5004 udpdmask=FFFE

create classifier=14 udpdport=16384 udpdmask=8000

create qos flow=1

add qos flow=1 class=11-14

create qos traffic=1 markvalue=55 premark=usemarkvalue

set qos traffic=1 maxband=64Kbps dropbwclass3=yes maxburst=10kbytes

X Step 2—Giving better service to VOIP traffic