Bdtyktl

I am using 14.04 and installed isc-dhcp-server in my ubuntu. here is my dhcp configuration.

INTERFACES="eth0"



allow booting;

allow bootp;



subnet 192.168.1.0 netmask 255.255.255.0 {

    range dynamic-bootp 192.168.1.10 192.168.1.200;

    option broadcast-address 192.168.1.255;

    option routers 192.168.1.1;

    option subnet-mask 255.255.255.0;

    filename "/var/lib/tftpboot/pxelinux.0";

}

when i check this

ashokkrishna@ashokkrishna-Lenovo-B560:~$ dhcpd -t /etc/dhcp/dhcpd.conf

/etc/dhcp/dhcpd.conf: interface name too long (is 20)

and I tried to boot in pxe in remote system i failed. how to solve this.

PXE-E51: No DHCP or proxyDHCP offers were received.



PXE-M0F: Exiting Broadcom ROM.

/etc/network/interfaces.

auto lo

iface lo inet loopback



auto eth0

iface eth0 inet static

  address 192.168.1.9

  gateway 192.168.1.1

  netmask 255.255.255.0



auto br0

iface br0 inet static

        address 192.168.1.101

        netmask 255.255.255.0

        network 192.168.1.0

        broadcast 192.168.1.255

        gateway 192.168.1.1

        bridge_ports eth0

        bridge_stp off

        bridge_maxwait 5

ifconfig

br0       Link encap:Ethernet  HWaddr f0:de:f1:a4:ec:87  

          inet addr:192.168.1.101  Bcast:192.168.1.255  Mask:255.255.255.0

          UP BROADCAST MULTICAST  MTU:1500  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)



eth0      Link encap:Ethernet  HWaddr f0:de:f1:a4:ec:87  

          UP BROADCAST MULTICAST  MTU:1500  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)



lo        Link encap:Local Loopback  

          inet addr:127.0.0.1  Mask:255.0.0.0

          inet6 addr: ::1/128 Scope:Host

          UP LOOPBACK RUNNING  MTU:65536  Metric:1

          RX packets:3929 errors:0 dropped:0 overruns:0 frame:0

          TX packets:3929 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:380900 (380.9 KB)  TX bytes:380900 (380.9 KB)



wlan0     Link encap:Ethernet  HWaddr 74:de:2b:e2:94:c6  

          inet addr:192.168.43.9  Bcast:192.168.43.255  Mask:255.255.255.0

          inet6 addr: fe80::76de:2bff:fee2:94c6/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:10941 errors:0 dropped:0 overruns:0 frame:0

          TX packets:13954 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:3537434 (3.5 MB)  TX bytes:1880208 (1.8 MB)

Try this

# Sample /etc/dhcpd.conf





default-lease-time 600;

max-lease-time 7200;

option subnet-mask 255.255.255.0;

option broadcast-address 192.168.1.255;

option routers 192.168.1.254;

option domain-name-servers 192.168.1.1, 192.168.1.2;

option domain-name "***********";

option ntp-servers 192.168.1.254;



subnet 192.168.1.0 netmask 255.255.255.0 {

  range 192.168.1.10 192.168.1.100;

  range 192.168.1.110 192.168.1.200;

} 

If the DHCP server displays an error and restarts after launching network, open the interfaces file using your preferred text editor:

sudo nano /etc/network/interfaces

Then enter the following lines to your liking:

iface eth0 inet static

    address 192.168.1.*

    network 192.168.1.**

    netmask 255.255.255 

    broadcast 192.168.1.255

    up service isc-dhcp-server restart

    auto eth0

Now restart your system with:

sudo reboot

Your DHCP server should now be functional. To test if DHCP is working run the dhclient command.