ZyXEL Communications 4528F User Manual

Chapter 26 IP Source Guard

XGS-4526/4528F/4728F User’s Guide

Use this screen to look at the current list of MAC address filters that were created 
because the Switch identified an unauthorized ARP packet. When the Switch 
identifies an unauthorized ARP packet, it automatically creates a MAC address 
filter to block traffic from the source MAC address and source VLAN ID of the 
unauthorized ARP packet. To open this screen, click Advanced Application > IP 
Source Guard > ARP Inspection.

Figure 123   ARP Inspection Status

The following table describes the labels in this screen.

Table 83   ARP Inspection Status

Total number of filters This field displays the current number of MAC address filters that 

were created because the Switch identified unauthorized ARP 
packets.

Index

This field displays a sequential number for each MAC address 
filter.

MAC Address

This field displays the source MAC address in the MAC address 
filter.

VID

This field displays the source VLAN ID in the MAC address filter.

Port

This field displays the source port of the discarded ARP packet.

Expiry (sec)

This field displays how long (in seconds) the MAC address filter 
remains in the Switch. You can also delete the record manually 
(Delete).

Reason

This field displays the reason the ARP packet was discarded.

MAC+VLAN: The MAC address and VLAN ID were not in the 
binding table.

IP: The MAC address and VLAN ID were in the binding table, but 
the IP address was not valid.

Port: The MAC address, VLAN ID, and IP address were in the 
binding table, but the port number was not valid.

Delete

Select this and click Delete to remove the specified entry.

Delete

Click this to remove the selected entries.

Cancel

Click this to clear the Delete check boxes above.