Operation Manual – Port Security-Port Binding
H3C S3100 Series Ethernet Switches Chapter 1 Port Security Configuration
1-8
 Note:
z Before setting the port security mode to autolearn, you need to set the maximum
number of MAC addresses allowed on the port with the port-security
max-mac-count command.
z When the port operates in the autoLearn mode, you cannot change the maximum
number of MAC addresses allowed on the port.
z After you set the port security mode to autolearn, you cannot configure any static or
blackhole MAC addresses on the port.
z If the port is in a security mode other than noRestriction, before you can change
the port security mode, you need to restore the port security mode to noRestriction
with the undo port-security port-mode command.
If the port-security port-mode mode command has been executed on a port, none of
the following can be configured on the same port:
z Maximum number of MAC addresses that the port can learn
z Reflector port for port mirroring
z Link aggregation
1.2.4 Configuring Port Security Features
I. Configuring the NTK feature
Follow these steps to configure the NTK feature:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter Ethernet port view
interface interface-type
interface-number
—
Configure the NTK feature
port-security ntk-mode
{ ntkonly |
ntk-withbroadcasts |
ntk-withmulticasts }
Required
By default, NTK is
disabled on a port, namely
all frames are allowed to
be sent.
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