Allied Telesis AT-GS950/24 - Manual (Page 304)

Chapter 22: DHCP Snooping
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5. From the main menu on the left side of the page, select Save Settings
to Flash to activate or de-activate the DHCP Snooping feature on the
AT-GS950/24 switch.
Configuring
DHCP Snooping
General Settings
The following procedure describes how to configure the DHCP Snooping
feature on the AT-GS950/24 switch:
1. From the main menu on the left side of the page, select DHCP
Snooping.
The DHCP Snooping folder expands.
2. From the DHCP Snooping folder, select General Settings.
The General Settings page is displayed. See Figure 121 on page 303.
3. From the Pass Through Option 82 field, select one of the following
choices from the pull-down menu:
Enable - Allows an Option 82 packet to be passed through the
AT-GS950/24 switch without being altered.
Disable - Blocks an Option 82 packet from passing through the
AT-GS950/24 switch.
4. From the Verify MAC Address field, select one of the following
choices from the pull-down menu:
Enable - The MAC address of each ingress ARP packet is
validated when compared against the Binding Table entries.
Invalid ARP packets are discarded.
Disable - The MAC address of each ingress ARP packet is not
validated against the Binding Table. All ARP packets are
forwarded through the switch without regard to the IP and MAC
Address information in the packet header.
5. From the Backup Database field, select one of the following choices
from the pull-down menu:
Enable - The AT-S115 Management Software saves a backup
copy of the Binding Table to flash at a specified interval (Database
Update Interval) of time.
Disable - The AT-S115 Management Software does not save a
backup copy of the Binding Table to flash.
6. Select an interval of time for the Database Update Interval field. The
range of this interval is 600 to 86400 seconds.
7. From the DHCP Option 82 Insertion field, select one of the following
choices from the pull-down menu: