In order to configure MAC address filtering and apply it to the VLAN interface, you must complete several steps. First, you create the VLAN access maps for each type of traffic that requires filtering. You select a MAC address or range of MAC addresses for blocking. You also need to identify the ARP traffic in the access list. According to RFC 826 , an ARP frame uses the Ethernet protocol type of value 0x806. You can filter on this protocol type as interesting traffic for the access list.
In global configuration mode, create a named MAC extended access list with the name ARP_Packet.
Issue the mac access-list extended ACL_name command and add the host MAC address or addresses that you want to block.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...