SMC Networks 16 10BASE-T Port Security Commands, Port security, Interface Configuration Ethernet

Authentication Commands 4

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.

Table 4-30. Port Security Commands

Command	Function	Mode	Page
port security	Configures a secure port	IC	4-75
mac-address-table static	Maps a static address to a port in a VLAN	GC	4-130
show mac-address-table	Displays entries in the bridge-forwarding database	PE	4-131

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)

4-75