ZyXEL Communications IES-1248-51, User Manual

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IES-1248-51 User’s Guide
Chapter 26 Port Security 175
C
H A P T E R
26
Port Security
This chapter shows you how to set up port security.
26.1 About Port Security
Port security allows you to restrict the number of MAC addresses that can be learned on a port.
The IES-1248-51 can learn up to 4K MAC addresses in total.
26.2 Port Security Screen
To open this screen, click Advanced Application , Port Security .
Figure 87 Port Security
The following table describes the labels in this screen.
Table 43 Port Security
LABEL DESCRIPTION
Port This field displays a port number.
Enable Select this check box to restrict the number of MAC addresses that can be
learned on the port. Clear this check box to not limit the number of MAC
addresses that can be learned on the port.
Limited Number of
Learned MAC
Address
Specify how many MAC addresses the IES-1248-51 can learn on this port. The
range is 1~128.
Note: If you also use MAC filtering on a port, it is recommended
that you set this limit to be equal to or greater than the
number of MAC filter entries you configure.