ZyXEL Communications GS3700 Series Betriebsanweisung PDF herunterladen (Seite 309)

Chapter 37 DHCP

GS3700/XGS3700 Series User’s Guide

309

The following table describes the labels in this screen.

37.5.2 Example: DHCP Relay for Two VLANs

The following example displays two VLANs (VIDs 1 and 2) for a campus network. Two DHCP servers

are installed to serve each VLAN. The system is set up to forward DHCP requests from the

dormitory rooms (VLAN 1) to the DHCP server with an IP address of 192.168.1.100. Requests from

Table 158 IP Application > DHCP > DHCPv4 > VLAN > Port

LABEL DESCRIPTION

VID Enter the ID number of the VLAN you want to configure here.

Port Enter the number of port(s) 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

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

port(s) in this VLAN. The Switch adds the Circuit ID sub-option and/or Remote ID sub-

option specified in the profile to DHCP requests that it relays to a DHCP server.

Note: The profile you select here has priority over the one you select in the DHCP >

DHCPv4 > 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 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 above based on the last selected entry or, if not applicable,

to clear the fields above.

Clear Click Clear 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 port(s) belongs.

Port This field displays the port(s) to which the Switch applies the settings.

Profile Name This field displays the DHCP option 82 profile that the Switch applies to the port(s) in

this VLAN.

Delete Select the entry(ies) that you want to remove in the Delete column, then click the

Delete button to remove the selected entry(ies) from the table.

Cancel Click this to clear the Delete check boxes above.

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