HP 4100gl, 6108 Device’s MAC address. For example, See the MAC Address entry in the table on

Configuring and Monitoring Port Security

Port Security Command Options and Operation

If you are adding a device (MAC address) to a port on which the Authorized Addresses list is already full (as controlled by the port’s current Address Limit setting), then you must increase the Address Limit in order to add the device, even if you want to replace one device with another. Using the CLI, you can simultaneously increase the limit and add the MAC address with a single command. For example, suppose port A1 allows one authorized device and already has a device listed:

	Figure 9-6. Example of Port Security on Port A1 with an Address Limit of “1”
	To add a second authorized device to port A1, execute a port-securitycommand
	for port A1 that raises the address limit to 2 and specifies the additional
	device’s MAC address. For example:
	ProCurve(config)# port-security a1 mac-address 0c0090-
	456456 address-limit 2
	Removing a Device From the “Authorized” List for a Port Configured
	for Learn-Mode Static. This command option removes unwanted devices
	(MAC addresses) from the Authorized Addresses list. (An Authorized Address
	list is available for each port for which Learn Mode is currently set to “Static”.
	See the “MAC Address” entry in the table on 9-8.)
C a u t i o n	The address-limitsetting controls how many MAC addresses are allowed in
	the Authorized Addresses list for a given port. If you remove a MAC address
	without also reducing the address limit by 1, the port may later detect and
	accept the same or another MAC address that you do not want in the Autho-
	rized Address list. Thus, if you use the CLI to remove a MAC address that is
	no longer authorized, you should first reduce the Address Limit (address-limit)
	integer by 1, as shown in the next example. This prevents the possibility of the
	same device or another device on the network from automatically being
	accepted as “authorized” for that port. (You can prevent the port from learning
	unauthorized MAC addresses by using the learn-mode configured option
	instead of the learn-mode static option. Refer to the Note on page 9-8.)

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