C
HAPTER
25
| Access Control Lists
ARP ACLs
– 724 –
COMMAND MODE
Global Configuration
COMMAND USAGE
◆ 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 128 rules.
EXAMPLE
Console(config)#access-list arp factory
Console(config-arp-acl)#
RELATED COMMANDS
permit, deny (724)
show arp access-list (725)
permit, deny
(ARP ACL)
This command adds a rule to an ARP ACL. The rule filters packets matching
a specified source or destination address in ARP messages. Use the no
form to remove a rule.
SYNTAX
[no] {permit | deny}
ip {any | host source-ip | source-ip ip-address-bitmask}
mac {any | host source-ip | source-ip ip-address-bitmask} [log]
This form indicates either request or response packets.
[no] {permit | deny} request
ip {any | host source-ip | source-ip ip-address-bitmask}
mac {any | host source-mac | source-mac mac-address-bitmask}
[log]
[no] {permit | deny} response
ip {any | host source-ip | source-ip ip-address-bitmask}
{any | host destination-ip | destination-ip ip-address-bitmask}
mac {any | host source-mac | source-mac mac-address-bitmask}
[any | host destination-mac | destination-mac mac-address-
bitmask] [log]
source-ip – Source IP address.
destination-ip – Destination IP address with bitmask.
ip-address-bitmask
16
– IPv4 number representing the address bits
to match.
source-mac – Source MAC address.
16. For all bitmasks, binary “1” means care and “0” means ignore.
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