TP-Link T1500-28TC TL-SL2428 T1500-28TCUN V1 Configuration Guide - Page 421

Configuring Network Security IP-MAC Binding Configurations Collision Displays the collision status of the entry. Warning: The collision entries have the same IP address and MAC address, and all the collision entries are valid. This kind of collision may be caused by the MSTP function. Critical: The collision entries have the same IP address but different MAC addresses. For the collision entries learned from the same source, only the newly added entry will be valid. For the collision entries learned from different sources, only the entry with the highest priority will be valid. The priority of different entry types, from high to low, is Manually, ARP Scanning and DHCP Snooping.  DHCP Snooping With DHCP Snooping enabled, the switch can monitor the IP address obtaining process of the host, and record the IP address, MAC address, VLAN ID and the connected port number of the host. For instructions on how to configure DHCP Snooping, refer to DHCP Snooping Configurations. 2.1.3 Viewing the Binding Entries With the Binding Table, you can view and search the specified binding entries. Choose the menu Network Security > IP-MAC Binding > Binding Table to load the following page. Figure 2-3 Binding Table In the Search section, specify the search criteria to search your desired entries. Source Select the source of the entry and click Search. All: Displays the entries from all sources. Manual: Displays the manually bound entries. Scanning: Displays the binding entries learned from ARP Scanning. Snooping: Displays the binding entries learned from DHCP Snooping. IP Enter an IP address and click Search to search the specific entry. Configuration Guide 400