HP 6120G/XG HP ProCurve Series 6120 Blade Switches Access Security Guide - Page 547

Configuring and Monitoring Port Security Port Security Syntax: port-security (Continued) learn-mode < continuous | static | port-access | configured | limitedcontinuous > (Continued) static: Enables you to use the mac-address parameter to specify the MAC addresses of the devices authorized for a port, and the address-limit parameter (explained below) to specify the number of MAC addresses authorized for the port. You can authorize specific devices for the port, while still allowing the port to accept other, non-specified devices until the device limit has been reached. That is, if you enter fewer MAC addresses than you authorized, the port authorizes the remaining addresses in the order in which it automatically learns them. For example, if you use address-limit to specify three authorized devices, but use mac-address to specify only one authorized MAC address, the port adds the one specifically authorized MAC address to its authorized-devices list and the first two additional MAC addresses it detects. If, for example: You use mac-address to authorize MAC address 0060b0-880a80 for port A4. You use address-limit to allow three devices on port A4 and the port detects these MAC addresses: 1. 080090-1362f2 2. 00f031-423fc1 3. 080071-0c45a1 4. 0060b0-880a80 (the address you authorized with the mac-address parameter) In this example port A4 would assume the following list of authorized addresses: 080090-1362f2 (the first address the port detected) 00f031-423fc1 (the second address the port detected) 0060b0-880a80 (the address you authorized with the mac-address parameter) The remaining MAC address detected by the port, 080071-0c45a1, is not allowed and is handled as an intruder. Learned addresses that become authorized do not age-out. See also "Retention of Static Addresses" on page 13-19. - Continued - 13-15