Defining An Acl - 3Com Switch 7700 Configuration Manual

234 C 7: Q S/ O
HAPTER O PERATION

Defining an ACL

The Switch 7700 supports several kinds of ACLs.
To define the ACL:
1 Enter the corresponding ACL view
2 Add 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 of 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.
Table 4 Define Basic ACL
Operation
Enter basic ACL view (from system view)
Add a sub-item to the ACL (from basic ACL
view)
Delete a sub-item from the ACL (from basic
ACL view)
Delete one ACL or all the ACL (from system
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
Command
acl { number acl-number | name acl-name
basic } [ match-order { config | auto } ]
rule [ rule-id ] { permit | deny } [ source
source-addr wildcard | any ] [ fragment ] [
time-range name ]
undo rule rule-id [ source ] [ fragment ] [
time-range ]
undo acl { number acl-number | name
acl-name | all }