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New Member

Access List blocks ARP

access-list 105 deny ip any any

Does anyone know if this ACL applied to an interface will block incoming ARP messages?

3 REPLIES
Cisco Employee

Re: Access List blocks ARP

no it won't. ARP is not IP packet

Roland

New Member

Re: Access List blocks ARP

ok thank you

New Member

Re: Access List blocks ARP

It can be useful to block arp requests using mac address acls and tying them to the vlan interface.

All ARP frames use 0x806 Ethernet protocol type.

useful link

http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration_example09186a0080470c39.shtml

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