Allied Telesis AT-S63 - Manual (Page 337)

AT-S63 Management Software Menus Interface User’s Guide
Section II: Advanced Operations 337
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 alter the packets so that they leave
containing the new level, you would change option 5, Remark Priority,
to Yes.
ˆ Traffic Class - No action is taken by the traffic class, other than to
specify the flow group. Traffic class has a priority setting that you can
use to override the priority level of packets, just as in a flow group. If
you enter a priority value in both places, the setting in the flow group
overrides the setting in the traffic class.
ˆ Policy - Specifies the traffic class and the port to which the policy is to
be assigned. Policy 6 is applied to port 1 because this is where the
application is located. Policy 11 is applied to port 8 because this is
where traffic going to the application will be received.