ZyXEL Communications Plumbing Product metrogigabit switch User Manual

 Chapter 26 IP Source Guard

MGS3700-12C 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 136   ARP Inspection Status

The following table describes the labels in this screen.

Apply

Click Apply to save your changes to the Switch’s run-time 
memory. The Switch loses these changes if it is turned off or loses 
power, so use the Save link on the top navigation panel to save 
your changes to the non-volatile memory when you are done 
configuring.

Cancel

Click this to reset the values in this screen to their last-saved 
values.

Table 86   DHCP Snooping VLAN Configure (continued)

Table 87   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).