Allied Telesis AT-S63 User Manual
Page 382
Chapter 21: Quality of Service (QoS) Commands
382
Section II: Advanced Operations
FLOWGROUP command, you’ll see that there are different actions that
the flow group can perform, such as replacing values in the Type of
Service or priority fields of the packets. These parameters are not
available in the AlliedWare Plus commands. In fact, the only parameters
you can control in policies created with the AlliedWare Plus commands
are the maximum bandwidth value and the replacement DSCP value, set
when you create the traffic classes.
Here are a few other differences between the AlliedWare Plus commands
and the other management interfaces:
Flow groups created with the other management interfaces can have
more than one classifier, making 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.
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.
Group 1 Examples
This example creates a classifier and a flow group for packets with the
source IP address 149.11.14.0. The classifier is created with the
AlliedWare Plus ACCESS-LIST command and is assigned the ID number
2. The flow group is given the ID number 270. This example starts at the
User Exec mode in the AlliedWare Plus command interface:
awplus> enable
awplus# con
figure terminal
awplus(config)#
access-list 2 permit 149.11.14.0/24
awplus(config)#
class-map 270
awplus(config-cmap)#
match access-group 2
You notice an action of Permit in the ACCESS-LIST command. The action
pertains to the access control list and not to the classifier. If the access
control list will not be used, the action can be either Permit or Deny.
This example is the same as the previous one, except the standard
CREATE CLASSIFIER command is used to create the classifier. It starts
at the standard command line prompt:
# create classifier=2
ipsaddr=149.11.14.0/24
# awplus
awplus> enable
awplus# con
figure terminal
awplus(config)#
class-map 270
awplus(config-cmap)#
match access-group 2