Allied Telesis AT-S63 - Manual (Page 154)

Chapter 13: Quality of Service
154 Section II: Advanced Operations
Figure 11. QoS Voice Application Example
The parts of the policies are:
ˆ Classifier - Defines the traffic flow by specifying the IP address of the
node with the voice application. The classifier for Policy 6 specifies the
address as a source address because this classifier is part of a policy
for packets coming from the application. The classifier for Policy 11
specifies the address as a destination address because this classifier
is part of a policy for packets going to the application.
ˆ Flow Group - Specifies the new priority level of 7 for the packets. In this
example the packets leave the switch with the same priority level they
had when they entered. The new priority level is relevant only as the
packets traverse the switch. To change the packets’ priority level so
that they leave with the new level, you would change option 5, Remark
Priority, to Yes.
Create Classifier
01 - Classifier ID: ..... 22
02 - Description ....... VoIP flow
.
12 - Src IP Addr ....... 149.44.44.44
13 - Src IP Mask ......
Create Flow Group
1 - Flow Group ID ............. 14
2 - Description ................... VoIP
3 - DSCP Value .................
4 - Priority ......................... 7
5 - Remark Priority ........... No
.
9 - Classifier List .............. 22
Create Traffic Class
01 - Traffic Class ID: ........ 18
02 - Desciption ................ VoIP flow
.
E - Flow Group List ......... 14
Create Policy
1 - Policy ID: .................. 6
2 - Desciption ................ VoIP flow
.
9 - Traffic Class List ......... 18
.
B - Ingress Port List ......... 1
Create Classifier
01 - Classifier ID: ..... 23
02 - Description ....... VoIP flow
.
14 - Dst IP Addr ....... 149.44.44.44
15 - Dst IP Mask .......
Create Flow Group
1 - Flow Group ID ............. 17
2 - Description ................... VoIP
3 - DSCP Value .................
4 - Priority ......................... 7
5 - Remark Priority ........... No
.
9 - Classifier List .............. 23
Create Traffic Class
01 - Traffic Class ID: ........ 15
02 - Desciption ................ VoIP flow
.
E - Flow Group List ......... 17
Create Policy
1 - Policy ID: .............. 11
2 - Desciption ............ VoIP flow
.
9 - Traffic Class List ..... 15
.
B - Ingress Port List ...... 8
Policy 6 Policy 11