152 CHAPTER 7: QOS/ OPERATION
To de fi ne t he ACL :
1Enter the corresponding ACL view
2Add a rule to the ACL
You can add multiple rules to one ACL.
If a specific time range is not defined, the ACL functions after it is activated.
During the process of defining the ACL, you can use the rule command several
times to define multiple rules for an ACL.
If ACL is used to filter or classify the data transmitted by the hardware o f the
switch, the match order defined in the acl command is ignored. If ACL is used to
filter or classify the data treated by the software of the switch, you can determine
the match order for the ACL sub-rules. After you specify the match-order of an
ACL rule, you cannot modify it later.
The default matching-order of ACL follows the order that is configured by the
user.
Tasks for defining an ACL are described in the following sections:
■Defining a Basic ACL
■Define an Advanced ACL
■Defining a Layer-2 ACL
Defining a Basic ACL
The rules of the basic ACL are defined on the basis of the Layer 3 source IP address
to analyze the data packets.
Perform the following configuration in the designated view.
A basic ACL is defined by numbers from 2000 to 2999.
Define an Advanced ACL
The classification rules for advanced ACL are defined on the basis of attributes,
such as, source and destination IP address, the TCP or UDP port number in use,
and the packet priority to process the data packets. The advanced ACL supports
the analyses of three kinds of packet priorities, ToS (Type of Service), IP, and DSCP
priorities.
Tabl e 164 Define Basic ACL
Operation Command
Enter basic ACL view (from system view) acl { number acl-number | name acl-name
basic } [ match-order { config | auto } ]
Add a sub-item to the ACL (from basic ACL
view)
rule [ rule-id ] { permit | deny } [ source
source-addr wildcard | any ] [ fragment ] [
time-range name ]
Delete a sub-item from the ACL (from basic
ACL view)
undo rule rule-id [ source ] [ fragment ] [
time-range ]
Delete one ACL or all the ACL (from system
view)
undo acl { number acl-number | name
acl-name | all }