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• Use the ARP Inspection Log Status screen (Section 26.9 on page 235) to look at log messages
that were generated by ARP packets and that have not been sent to the syslog server yet.
• Use the ARP Inspection Configure screen (Section 26.10 on page 237) to enable ARP
inspection on the Switch. You can also configure the length of time the Switch stores records of
discarded ARP packets and global settings for the ARP inspection log.
• Use the ARP Inspection Port Configure screen (Section 26.10.1 on page 238) to specify
whether ports are trusted or untrusted ports for ARP inspection.
• Use the ARP Inspection VLAN Configure screen (Section 26.10.2 on page 240) to enable ARP
inspection on each VLAN and to specify when the Switch generates log messages for receiving
ARP packets from each VLAN.
26.1.2 What You Need to Know
The Switch builds the binding table by snooping DHCP packets (dynamic bindings) and from
information provided manually by administrators (static bindings).
IP source guard consists of the following features:
• Static bindings. Use this to create static bindings in the binding table.
• DHCP snooping. Use this to filter unauthorized DHCP packets on the network and to build the
binding table dynamically.
• ARP inspection. Use this to filter unauthorized ARP packets on the network.
If you want to use dynamic bindings to filter unauthorized ARP packets (typical implementation),
you have to enable DHCP snooping before you enable ARP inspection.
26.2 IP Source Guard Screen
Use this screen to go to the configuration screens where you can configure IPv4 source guard
settings. Click Advanced Application > IP Source Guard in the navigation panel.
Figure 153 Advanced Application > IP Source Guard
The following table describes the labels in this screen.
Table 96 Advanced Application > IP Source Guard
LABEL DESCRIPTION
IPv4 Source
Guard Setup
Click the link to open screens where you can view and manage static bindings, configure
DHCP snooping or ARP inspection and look at various statistics.
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