About set the DHCP relay on USG40

shifu · April 2019

Hi,

I had USG40 with Captive Portal active and set the USG40 to be DHCP server

but I wanna set the DHCP server to other device which is builded by windows server

I had follow the guide in the FAQ about the set DHCP realy on USG

It's not work!

Any suggestion ? THX

ps. I had my DHCP server work fine with multiVLAN

Zyxel_Stanley · April 2019

In your scenario, does DHCP server(140.111.111.106) is able ping to USG LAN interface IP address(192.168.100.254)?

If answer is not, then DHCP offer will unable pass to client successfully.

I guess your DHCP server is located on WAN side of USG.

Then you have to add a routing rule on your router.

e.g. Destination: 192.168.100.0/24, NextHop: 140.111.111.11

Zyxel_Stanley · April 2019

Welcome to Zyxel community

Does your DHCP server is located in other subnet of USG40? Or other else?

Can you provide the topology of your DHCP environment? (IP subnets/ DHCP server/ DHCP clients…etc)

shifu · April 2019

HI, Stanley:

Here is my topolopy of my DHCP enviroment

The DHCP server and USG are at the same subnet...

The DHCP client catn't get ip from DHCP server on Windows Server

Any suggestion? Thank you.

Zyxel_Stanley · April 2019

In your scenario, does DHCP server(140.111.111.106) is able ping to USG LAN interface IP address(192.168.100.254)?

If answer is not, then DHCP offer will unable pass to client successfully.

I guess your DHCP server is located on WAN side of USG.

Then you have to add a routing rule on your router.

e.g. Destination: 192.168.100.0/24, NextHop: 140.111.111.11

shifu · April 2019

Wa !

I think your right, but I will check it later because I got another solution...

Thank you again...

dpipro · July 2019

I'm trying to have a Captive portal configured on my USG40W, but I can't put it working,

Can you send me your configuration file? Or maybe can you give some guidelines?

Thank you so much

Best regards

Zyxel_Cooldia · July 2019

Just Enable “Enable Web Authentication” at “CONFIGURATION > Web Authentication > General tab”, and add Web Authentication policy for Lan users.

Incoming interface　 : Select the interface on which packets for this policy are received.

Source Address : Select a source address or address group.

Authentication Type : Default-web-portal: the default login page built into the Zyxel Device.

default-user-agreement: The default user agreement page built into the Zyxel Device

Accepted Solution