Configure Dhcpv4 Relay; Troubleshooting - ZyXEL Communications XMG1915 Series User Manual

Clear the Tx Tagging check box to set the Switch to remove VLAN tags before sending.
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Click Apply to save the settings to the run-time memory. Settings in the run-time memory are lost when
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the Switch's power is turned off.
Go to VLAN > VLAN Setup >VLAN Port Setup. Enter "102" in the PVID field for port 2 to add a tag to
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incoming untagged frames received on that port so that the frames are forwarded to the VLAN group
that the tag defines.
Click Apply to save your changes back to the run-time memory.
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10 Click the Save link in the upper right of the Web Configurator to save your configuration permanently.

6.3.3 Configure DHCPv4 Relay

Follow the steps below to enable DHCP relay on the Switch and allow the Switch to add relay agent
information (such as the VLAN ID) to DHCP requests.
Click NETWORKING > DHCP > DHCPv4 Relay > DHCP Smart Relay. Enable the Active switch button.
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Enter the DHCP server's IP address (192.168.2.3 in this example) in the Remote DHCP Server 1 field.
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Select default1 or default2 in the Option 82 Profile field.
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Click Apply to save your changes back to the run-time memory.
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Click the Save link in the upper right of the Web Configurator to save your configuration permanently.
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The DHCP server can then assign a specific IP address based on the DHCP request.
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6.3.4 Troubleshooting

Check client A's IP address. If it did not receive the IP address 172.16.1.18, make sure:
Client A is connected to the Switch's port 2 in VLAN 102.
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You configured the correct VLAN ID, port number and system name for DHCP relay on both the DHCP
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server and the Switch.
Chapter 6 Tutorials
XMG1915 Series User's Guide
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