Chapter 10
| Access Control Lists
ARP ACLs
– 408 –
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 | de
stination-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).
log - Logs a packet when it matches the access control entry.
Default Setting
None
Command Mode
ARP ACL
Command Usage
New rules are added to the end of the list.
Example
This rule permits packets from any source IP and MAC address to the destination
subnet address 192.168.0.0.
Console(config-arp-acl)#$permit response ip any 192.168.0.0 255.255.0.0 mac
any any
Console(config-mac-acl)#
7. For all bitmasks, binary “1” means relevant and “0” means ignore.
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