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3 dhcp relay configuration example – ZyXEL Communications GS-4012F/4024 User Manual

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GS-4012F/4024 User’s Guide

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Chapter 30 DHCP

30.4.3 DHCP Relay Configuration Example

The follow figure shows a network example where the switch is used to relay DHCP requests
for the RD and Sales network. There is only one DHCP server that services the DHCP clients
in both networks.

Figure 104 DHCP Relay Network Example

Configure the DHCP Relay screen as shown. Make sure you select the Option 82 check box
to set the switch to send additional information (such as the VLAN ID) together with the
DHCP requests to the DHCP server. This allows the DHCP server to assign the appropriate IP
address according to the VLAN ID.

Figure 105 DHCP Relay Configuration Example

Apply

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.

Cancel

Click Cancel to discard all changes and start configuring the screen again.

Table 76 DHCP: Relay (continued)

LABEL

DESCRIPTION