Filtering CDP information

In some environments it is desirable to be able to configure a switch to handle CDP packets by filtering out the MAC address learns from untagged VLAN traffic from IP phones. This means that normal protocol processing occurs for the packets, but the addresses associated with these packets is not learned or reported by the software address management components. This enhancement also filters out the MAC address learns from LLDP and 802.1x EAPOL packets on untagged VLANs.

The feature is configured per-port.