Chapter 10
| Access Control Lists
ARP ACLs
– 418 –
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 (418)
show access-list arp (419)
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-mac | source-mac mac-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
7
– IPv4 number representing the address bits to match.
source-mac – Source MAC address.
destination-mac – Destination MAC address range with bitmask.
mac-address-
bitmask
7
– Bitmask for MAC address (in hexadecimal format).
7. For all bitmasks, binary “1” means relevant and “0” means ignore.
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