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76 NP2624M User Guide
YML827 Rev1
4.2.4.5. Port Security
A port in security mode will be “locked” without permission of address learning. Only the incoming
packets with SMAC already existing in the address table can be forwarded normally. The user can
disable the port from learning any new MAC addresses, then use the static MAC addresses screen to
define a list of MAC addresses that can use the secure port.
1. Select <Edit>.
2. Press Space key to choose enable / disable item.
3. Press Ctrl+A to go back action menu line.
4. Select <Save> to save all configure value.
5. You can press <Next Page> to configure port9 ~ port26, press <Previous Page> return to
last page.
4.2.4.5. Collisions Retry Forever
Collisions Retry Forever: Disable – In half duplex, in the event of a collision it
will retry up to 48 times before dropping the frame.
Enable – In half duplex, in the event of a collision it
will continue retrying forever (Default).