ZyXEL Communications GS2220 Series - Technical Reference

Chapter 27 DHCP Snooping
GS2220 Series User’s Guide
270
Fig ure 202 Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP Snooping >
Configure > VLAN > Port
The following table describes the labels in this screen.
27.4 Te c hnic a l Re fe re nc e
This section provides technical background information on the topics discussed in this chapter.
Table 125 Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP Snooping >
Configure > VLAN > Port
LABEL DESC RIPTIO N
VID Enter the ID number of the VLAN you want to configure here.
Port Enter the number of ports to which you want to apply the specified DHCP option 82 profile.
You can enter multiple ports separated by (no space) comma (,) or hyphen (–) for a range.
For example, enter “3–5” for ports 3, 4, and 5. Enter “3,5,7” for ports 3, 5, and 7.
Option 82 Profile Select a pre-defined DHCP option 82 profile that the Switch applies to the specified ports in
this VLAN. The Switch adds the information (such as slot number, port number, VLAN ID and/
or system name) specified in the profile to DHCP requests that it broadcasts to the DHCP
VLAN, if specified, or VLAN. You can specify the DHCP VLAN in the DHC P Sno o ping Co nfig ure
screen.
Note: The profile you select here has priority over the one you select in the DHCP
Sno o ping > Co nfig ure > VLAN screen.
Add Click this to create a new entry or to update an existing one.
This saves 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 Sa ve 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 above based on the last selected entry or, if not applicable, to
clear the fields above.
Clear Click Cle a r to reset the fields to the factory defaults.
Index This field displays a sequential number for each entry. Click an index number to change the
settings.
VID This field displays the VLAN to which the ports belongs.
Port This field displays the ports to which the Switch applies the settings.
Profile Name This field displays the DHCP option 82 profile that the Switch applies to the ports.
Delete Select the entries that you want to remove in the De le te column, and then click the De le te
button to remove the selected entries from the table.
Cancel Click this to clear the De le te check boxes above.