Arp Inspection Status - ZyXEL Communications MES3500-24F User Manual

Chapter 26 IP Source Guard
Table 80 DHCP Snooping VLAN Configure (continued)
LABEL
End VID
Apply
VID
Enabled
Option82
Information
Apply
Cancel

26.6 ARP Inspection Status

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 118 ARP Inspection Status
The following table describes the labels in this screen.
Table 81 ARP Inspection Status
LABEL
Total number
of filters
Index
MAC Address
VID
Port
226
DESCRIPTION
Enter the highest VLAN ID you want to manage in the section below.
Click this to display the specified range of VLANs in the section below.
This field displays the VLAN ID of each VLAN in the range specified above. If you configure the
* VLAN, the settings are applied to all VLANs.
Select Yes to enable DHCP snooping on the VLAN. You still have to enable DHCP snooping on
the Switch and specify trusted ports.
Note: The Switch will drop all DHCP requests if you enable DHCP snooping and there are no
trusted ports.
Select this to have the Switch add the slot number, port number and VLAN ID to DHCP
requests that it broadcasts to the DHCP VLAN, if specified, or VLAN. You can specify the DHCP
VLAN in the DHCP Snooping Configure screen. See
Select this to have the Switch add the system name to DHCP requests that it broadcasts to the
DHCP VLAN, if specified, or VLAN. You can configure the system name in the General Setup
screen. See Chapter 8 on page
Configure screen. See Section 26.5 on page
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.
Click this to reset the values in this screen to their last-saved values.
DESCRIPTION
This field displays the current number of MAC address filters that were created because the
Switch identified unauthorized ARP packets.
This field displays a sequential number for each MAC address filter.
This field displays the source MAC address in the MAC address filter.
This field displays the source VLAN ID in the MAC address filter.
This field displays the source port of the discarded ARP packet.
Section 26.5 on page
86. You can specify the DHCP VLAN in the DHCP Snooping
222.
222.
MES3500-24/24F User's Guide