ZyXEL Communications OLT2406, User Manual

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Chapter 27 IP Source Guard
OLT2406 User’s Guide
241
Figure 144 Advanced Application > IP Source Guard > ARP Inspection > Configure > VLAN
The following table describes the labels in this screen.
27.10 Technical Reference
This section provides technical background information on the topics discussed in this chapter.
27.10.1 DHCP Snooping Overview
Use DHCP snooping to filter unauthorized DHCP packets on the network and to build the binding table
dynamically. This can prevent clients from getting IP addresses from unauthorized DHCP servers.
Table 92 Advanced Application > IP Source Guard > ARP Inspection > Configure > VLAN
LABEL DESCRIPTION
VLAN Use this section to specify the VLANs you want to manage in the section below.
Start VID Enter the lowest VLAN ID you want to manage in the section below.
End VID Enter the highest VLAN ID you want to manage in the section below.
Apply Click this to display the specified range of VLANs in the section below.
VID 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.
Enabled Select Yes to enable ARP inspection on the VLAN. Select No to disable ARP inspection on the
VLAN.
Log Specify when the OLT generates log messages for receiving ARP packets from the VLAN.
None : The OLT does not generate any log messages when it receives an ARP packet from the
VLAN.
Deny : The OLT generates log messages when it discards an ARP packet from the VLAN.
Permit : The OLT generates log messages when it forwards an ARP packet from the VLAN.
All : The OLT generates log messages every time it receives an ARP packet from the VLAN.
Apply Click Apply to save your changes to the OLT’s run-time memory. The OLT 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.