Some IP addresses are not allocated in the DHCP server function.

[JAY1]

Hi,
If you have any idea where the problem is, could you please let me know?

<Summary>
In FG60E (FortiOS6.0.6), DHCP server function is enabled in Internal1.
I have enabled it, but some IP address ranges
will not be distributed.
-----------------------------------
Internal1 IP address
-->192.168.7.254/255.255.248.0

Internal1 DHCP-PoolIP
-->192.168.0.1-192.168.6.255
-----------------------------------

<Details>
OK-->IP address are distributed from 192.168.0.1 to 192.168.0.255
NG-->IP address are not distributed from 192.168.1.0 to 192.168.6.255

[saneeshpv_FTNT]

Hi @JAY1 ,

You may try to debug this issue from Fortigate to identify the potential cause following below article.

https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-DHCP-debug-message-There-is-no-reque... 

If you are not able to find a solution to this from the debug, please open a Support case.

Best Regards,

[dbu]

Hi @JAY1 ,

Additionally to what @saneeshpv_FTNT  mentioned , please keep in mind that the available IP addresses for assignment will be:

192.168.0.1 to 192.168.7.253 . 

My question is how do you understand that IPs from 192.168.1.0 and later are not assigned to users ? 
Do you have more that 256 users requesting IPs from this DHCP ? 

Please verify the address range configured for this DHCP, perhaps you have limited it there. 
Fortigate > Network > Interfaces > Select and edit the interface > DHCP Server > Address range. 

Regards!

[JAY1]

Hi saneeshpv, dbu,

Thank you for reply.

First, I would like to obtain the debug log located at the URL below.

Thank you very much for your cooperation.