ZyXEL Communications MGS-3712/MES-3728 User Manual page 258

Chapter 26 IP Source Guard
ARP packets on each untrusted port. To open this screen, click Advanced
Application > IP Source Guard > ARP Inspection > Configure > Port.
Figure 132 ARP Inspection Port Configure
The following table describes the labels in this screen.
Table 84 ARP Inspection Port Configure
LABEL
Port
Trusted State
Limit
Rate (pps)
258
DESCRIPTION
This field displays the port number. If you configure the * port,
the settings are applied to all of the ports.
Select whether this port is a trusted port (Trusted) or an
untrusted port (Untrusted).
The Switch does not discard ARP packets on trusted ports for any
reason.
The Switch discards ARP packets on untrusted ports in the
following situations:
• The sender's information in the ARP packet does not match
any of the current bindings.
• The rate at which ARP packets arrive is too high. You can
specify the maximum rate at which ARP packets can arrive on
untrusted ports.
These settings have no effect on trusted ports.
Specify the maximum rate (1-2048 packets per second) at which
the Switch receives ARP packets from each port. The Switch
discards any additional ARP packets. Enter 0 to disable this limit.
MES-3728 User's Guide