Problem with DHCPD for Arris 1100

I have configured Arris properly but i have one problem with dhcpd.

I get this error all the time.

Jul 12 04:51:01 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:51:05 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:51:14 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:51:30 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:52:03 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:53:07 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:54:19 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:54:24 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases
Jul 12 04:54:32 linux-0zbt dhcpd: DHCPDISCOVER from 00:1e:6b:1e:31:2e via 10.248.0.252: network 10.248.0/24: no free leases

I want my modems to get ip's from this range 10.197.0.0\

but this message is killing me i don't know what is the problem.

Below is my dhcpd.conf .

allow unknown-clients;
ddns-update-style none;
option domain-name "dhcpd";
option domain-name-servers 100.0.0.1, 100.0.1;
option routers 10.190.15.254;
option time-servers 10.248.0.253;

#------------------------------------------------------------------------------------

subnet 10.248.0.0 netmask 255.255.255.0 {
}

subnet 10.197.0.0 netmask 255.255.240.0 {
range 10.197.0.1 10.197.14.255;
option domain-name-servers 100.0.0.1, 100.0.0.1;
option routers 10.197.15.254;
option tftp-server-name "10.248.0.253";
server-name "10.248.0.253";
option broadcast-address 10.197.15.255;
default-lease-time 86400;
max-lease-time 86400;
next-server 10.248.0.252;
option time-offset -25200;
option time-servers 10.248.0.253;
}

host 1 {
hardware ethernet 00:1b:dd:98:03:1e;
fixed-address 10.197.0.1;
filename "512.cfg";
}

Any idea from you i will appreciate it very much.

Thank you.