TP-Link TL-SG5426 User Guide - Page 320

4 Authentication Commands Port Security Commands These commands can be used to enable port security on a port. When using port security, the switch stops learning new MAC addresses on the specified port when it has reached a configured maximum number. Only incoming traffic with source addresses already stored in the dynamic or static address table for this port will be authorized to access the network. The port will drop any incoming frames with a source MAC address that is unknown or has been previously learned from another port. If a device with an unauthorized MAC address attempts to use the switch port, the intrusion will be detected and the switch can automatically take action by disabling the port and sending a trap message. Command port security mac-address-table static show mac-address-table Table 4-31 Port Security Commands Function Configures a secure port Maps a static address to a port in a VLAN Displays entries in the bridge-forwarding database Mode IC GC PE Page 4-79 4-140 4-141 port security This command enables or configures port security. Use the no form without any keywords to disable port security. Use the no form with the appropriate keyword to restore the default settings for a response to security violation or for the maximum number of allowed addresses. Syntax port security [action {shutdown | trap | trap-and-shutdown} | max-mac-count address-count] no port security [action | max-mac-count] • action - Response to take when port security is violated. - shutdown - Disable port only. - trap - Issue SNMP trap message only. - trap-and-shutdown - Issue SNMP trap message and disable port. • max-mac-count - address-count - The maximum number of MAC addresses that can be learned on a port. (Range: 0-1024) Default Setting • Status: Disabled • Action: None • Maximum Addresses: 0 Command Mode Interface Configuration (Ethernet) 4-79