3Com 7757 Configuration Manual page 200

200 C 25: P S
HAPTER ORT ECURITY
C
ONFIGURATION
Table 129 Description of port security modes
Security
mode Description
autolearn In this mode, the port automatically learns MAC addresses
and changes them to security MAC addresses.
This security mode will automatically change to the secure
mode after the amount of security MAC addresses on the
port reaches the maximum number configured with the
port-security max-mac-count command.
After the port security mode is changed to the secure mode,
only those packets whose source MAC addresses are security
MAC addresses learned configured can pass through the
port.
secure In this mode, the port is disabled from learning MAC
addresses.
Only those packets whose source MAC addresses are static
MAC addresses configured can pass through the port.
userlogin In this mode, port-based 802.1x authentication is performed
for access users.
Feature
In the secure
mode, the
device will
trigger NTK and
intrusion
protection upon
detecting an
illegal packet.
In this mode,
neither NTK nor
intrusion
protection will
be triggered.