Allied Telesis AT-S63 - Manual (Page 355)

AT-S63 Management Software Command Line User’s Guide
Section II: Advanced Operations 355
The number of available parameters are greatly restricted, however, when
you use the AlliedWare Plus commands. The only criteria you can set in
the classifiers are the five items listed in Syntax earlier in this section.
Consequently, Quality of Service policies created with the AlliedWare Plus
commands can only control those types of traffic flows.
As for the parameters in a flow group, you cannot set any of them through
the AlliedWare Plus commands. In fact, the only parameters you can
control in a policy are the maximum bandwidth value and the replacement
DSCP value, set when you create the traffic classes.
Flow groups are not the only feature that use classifiers. Access control
lists, which determine the traffic flows accepted or rejects by the ports,
also use them. With the other management interfaces you can assign the
same classifier to both a flow group and an access control group. But this
is not possible with the AlliedWare Plus commands. You cannot use these
commands to create classifiers for both traffic flows and access control
lists.
Here are a few other differences between the AlliedWare Plus commands
and the other management interfaces:
ˆ Flow groups created with the other management interfaces can have
more than one classifier, which makes it possible to create policies that
control more than one traffic flow. In contrast, flow groups created with
the AlliedWare Plus commands can control only one traffic flow
because they can have only one classifier.
ˆ The range of the ID numbers for the flow groups and their classifiers is
0 to 1023 in the other management interfaces, and 256 to 1023 in the
AlliedWare Plus commands.
ˆ You can use the other management interfaces to modify Quality of
Service policies created with the AlliedWare Plus commands. But the
reverse isn’t true. That is you cannot use the AlliedWare Plus
commands to modify policies created with one of the other interfaces.
Examples
This example creates a flow group and a classifier with the ID number 265.
The classifier filters for packets with an IP Type of Service value of 5:
awplus> enable
awplus# configure terminal
awplus(config)# class-map 265
awplus(config-cmap)# match ip-precedence 5