1-7
Configuring a Basic ACL
Configuring an IPv4 basic ACL
IPv4 basic ACLs match packets based on only source IP address.
Follow these steps to configure an IPv4 basic ACL:
To do… Use the command… Remarks
Enter system view
system-view
––
Create an IPv4 basic ACL and
enter its view
acl number
acl-number [
name
acl-name ] [
match-order
{
auto
|
config
} ]
Required
By default, no ACL exists.
IPv4 basic ACLs are numbered in
the range 2000 to 2999.
You can use the
acl
name
acl-name command to enter the
view of an existing named IPv4
ACL.
Configure a description for the
IPv4 basic ACL
description
text
Optional
By default, an IPv4 basic ACL has
no ACL description.
Set the rule numbering step
step
step-value
Optional
5 by default.
Create or edit a rule
rule
[ rule-id ] {
deny
|
permit
}
[
fragment
|
logging
|
source
{ sour-addr sour-wildcard |
any
} |
time-range
time-range-name |
vpn-instance
vpn-instance-name ]*
Required
By default, an IPv4 basic ACL
does not contain any rule.
To create or edit multiple rules,
repeat this step.
Note that the
logging
and
vpn-instance
keywords are not
supported if the ACL is to be
referenced by a QoS policy for
traffic classification.
Configure or edit a rule description
rule
rule-id
comment
text
Optional
By default, an IPv4 ACL rule has
no rule description.
Note that:
z You can only modify the existing rules of an ACL that uses the match order of config. When
modifying a rule of such an ACL, you may choose to change just some of the settings, in which
case the other settings remain the same.