Access Control List Commands
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access-list ip
This command adds an IP access list and enters configuration mode for standard or
extended IP ACLs. Use the no form to remove the specified ACL.
Syntax
[no] access-list ip {standard | extended} acl_name
• standard – Specifies an ACL that filters packets based on the source IP
address.
• extended – Specifies an ACL that filters packets based on the source or
destination IP address, and other more specific criteria.
- acl_name – Name of the ACL. (Maximum length: 16 characters)
Default Setting
None
Command Mode
Global Configuration
Command Usage
• An egress ACL must contain all deny rules.
• When you create a new ACL or enter configuration mode for an existing
ACL, use the permit or deny command to add new rules to the bottom of the
list. To create an ACL, you must add at least one rule to the list.
• To remove a rule, use the no permit or no deny command followed by the
exact text of a previously configured rule.
• An ACL can contain up to 32 rules.
Example
Related Commands
permit, deny (4-114)
ip access-group (4-122)
show ip access-list (4-117)
access-list ip extended fragment-auto-mask
This command automatically creates extra masks to support fragmented ACL
entries. Use the no form to disable this feature.
Syntax
[no] access-list ip extended fragment-auto-mask
Default Setting
Disabled
Console(config)#access-list ip standard david
Console(config-std-acl)#
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