ZyXEL Communications ES-2048, ES-2024PWR, ES-2024A How to set up Dhcp Relay Option 82 Environment

ES-2000 Series Switch Support Notes

How to set up DHCP Relay Option 82 Environment

Here, we will set up an environment to allow a PC to get DHCP IP address in specific IP pool according to its Switch port, VLAN ID and the option 82 string. In this case, we are using GS-3012 for the demonstration. PC is behind 25th Switch port and the option 82 string is a string “GS-3012”. We use the IP Commander as DHCP server. Its IP is 192.168.1.99 and the IP pool is between 192.168.1.201 and 192.168.1.203 for VID=1, Switch port=25 and the option 82 string is “GS-3012”.

1. Switch (GS-3012) settings

Click IP Application, DHCP Relay in the navigation panel to display configuration

screen as shown. You will see the DHCP Relay setup page. Active the DHCP relay and Option 82 function. Also, click Information to make “GS-3012” as the Option 82 string. Information is READ ONLY here and it is the same as the host name of the Switch.

Now we can connect PC to the 25th SWITCH port. Please see former applications for detailed settings.

3. IP Commander settings

Open IP Commander. Right click “IP commander and then click “connect new

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