Arp Inspection Status - ZyXEL Communications VES1724-56 User Manual

The following table describes the labels in this screen.
Table 115 DHCP Snooping VLAN Configure
LABEL
Show VLAN
Start VID
End VID
Apply
VID
Enabled
Option82
SPV
Delimiter
Information
Remote ID
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
VES1724-56 User's Guide
DESCRIPTION
Use this section to specify the VLANs you want to manage in the section below.
Enter the lowest VLAN ID you want to manage in the section below.
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.
If DHCP is enabled and there are no trusted ports, DHCP requests will not succeed.
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 the variables that you want the Switch to generate and add in the DHCP requests. The
variable options include SP, SV, PV and SPV which indicate combinations of slot-port, slot-
VLAN, port-VLAN and slot-port-VLAN respectively in ASCII code. Alternatively, select private
to have the Switch use the DHCP relay option 82 old format (slot-port-VLAN) in binary. The
Switch uses a zero for the slot value in the DHCP requests. An example of the port number is 1
if you select private while it is 31 in ASCII code if you select SP, SV or SPV.
Select a delimiter to separate the option 82 information, slot ID, port number and/or VLAN ID
from each other. You can use a pound key (#), semi-colon (;), period (.), comma (,), forward
slash (/) or space. Select none to not use any delimiter.
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
Select this to have the Switch also add the receiving port name as the remote ID to DHCP
requests. Clear this to not add remote IDs to DHCP requests.
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.
Section 26.5 on page
70. You can specify the DHCP VLAN in the DHCP Snooping
257.
Chapter 26 IP Source Guard
257.
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