Step (For Ipv6) - H3C MSR 20-20 Command Reference Manual

2116 C 139: IP 6 ACL C
HAPTER V
Example

step (for IPv6)

Syntax
View
Parameter
Description
Example
C
ONFIGURATION OMMANDS
By default, no rule description is created.
# Define a rule in IPv6 ACL 2000 and create a description for the rule.
<Sysname> system-view
[Sysname] acl ipv6 number 2000
[Sysname-acl6-basic-2000] rule 0 permit source 2030:5060::9050/64
[Sysname-acl6-basic-2000] rule 0 comment This rule is used in eth 1
# Define a rule in IPv6 ACL 3000 and create a description for the rule.
<Sysname> system-view
[Sysname] acl ipv6 number 3000
[Sysname-acl6-adv-3000] rule 0 permit tcp source 2030:5060::9050/64
[Sysname-acl6-adv-3000] rule 0 comment This rule is used in eth 1
step step-value
undo step
Basic IPv6 ACL view, advanced IPv6 ACL view
step-value: The step in which the rules in the IPv6 ACL is numbered, in the range 1
to 20.
Use the command to set a rule numbering step for the IPv6 ACL.
step
Use the command to restore the default.
undo step
By default, the rule numbering step is five.
When defining rules in an IPv6 ACL, you do not necessarily assign them numbers.
The system can do this automatically in steps. For example, if the default step
applies, rules you created are numbered 0, 5, 10, 15, and so on automatically.
One benefit of rule numbering step is that it allows you to insert new rules
between existing ones as needed. For example, after creating four rules numbered
0, 5, 10, 15 in an ACL configured with the step of 5, you can still insert a rule
numbered 1.
Any step change can result in renumbering. For example, after you change the
step in the above example from 5 to 2, the rules are renumbered 0, 2, 4, 6, and 8.
Note that even if the current step is the default, performing the undo step
command can still result in rule renumbering. Suppose that IPv6 ACL 3001 adopts
the default numbering step and contains two rules numbered 0 and 5. After you
insert rule 1 and rule 3, the rules are numbered 0, 1, 3, and 5. If you perform the
undo step command, they will be renumbered 0, 5, 10, and 15.
# Set the rule numbering step to 2 for IPv6 ACL 2000.