ZyXEL Communications ONU-2024 Series, User Manual

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Chapter 25 DHCP
ONU User’s Guide
187
The following describes the DHCP relay information that the ONU sends to the DHCP server:
25.3.2 Configuring DHCP Global Relay
Configure global DHCP relay in the DHCP Relay screen. Click IP Application > DHCP in
the navigation panel and click the Global link to display the screen as shown.
Figure 99 IP Application > DHCP > Global
The following table describes the labels in this screen.
25.3.2.1 Global DHCP Relay Configuration Example
The follow figure shows a network example where the ONU is used to relay DHCP requests
for the
VLAN1 and VLAN2 domains. There is only one DHCP server that services the DHCP
clients in both domains.
Table 68 Relay Agent Information
FIELD LABELS DESCRIPTION
Slot ID (1 byte) This value is always 0 for stand-alone switches.
Port ID (1 byte) This is the port that the DHCP client is connected to.
VLAN ID (2 bytes) This is the VLAN that the port belongs to.
Information (up to 32 bytes) This optional, read-only field is set according
to system name set in
Basic Settings > General Setup.
Table 69 IP Application > DHCP > Global
LABEL DESCRIPTION
Active Select this check box to enable DHCP relay.
Remote
DHCP Server
1 .. 3 Enter the IP address of a DHCP server in dotted decimal notation.
Relay Agent
Information Select the Option 82 check box to have the ONU add information (slot number, port
number and VLAN ID) to client DHCP requests that it relays to a DHCP server.
Information This read-only field displays the system name you configure in the General Setup
screen.
Select the check box for the ONU to add the system name to the client DHCP
requests that it relays to a DHCP server.
Apply Click Apply to save your changes to the ONU’s run-time memory. The ONU 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 begin configuring this screen afresh.