ZyXEL Communications ES 3500 Series Troubleshooting Manual page 101

Is there an IP address configured on the DHCP server's
interface?
You cannot configure a DHCP pool if the VLAN for the DHCP service has no IP
address configured.
Using Web GUI:
Figure 5 Basic Setting > IP Setup
In this example, VLAN 10, 20, and 30 will be used for DHCP service.
Using CLI:
Figure 6
If the DHCP server's interfaces have been configured with an IP address, go to step
7.
If the DHCP server's interfaces have not yet been configured with an IP address,
reconfigure and repeat step 4.
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