How to Distribute IP from DHCP Server more then 255 Usres
 

Hi,

I have linux dchp server. I want to configure IP disributing from dchp server for 300 users.
In the dchp server, I can assign only 192.168.0.1- 254. but how to setup for next users.
please help me.

Thanks,
Deepak Kumar

adjust the netmask

Can you tel me in the below file, what and where should I change ..........

******************************************************************
ddns-update-style interim; # Required for dhcp 3.0+ / Red Hat 8.0+
ignore client-updates;

subnet 192.168.1.0 netmask 255.255.255.0 {

range 192.168.1.128 192.168.1.254; # Range of IP addresses to be issued to DHCP clients
option subnet-mask 255.255.255.0; # Default subnet mask to be used by DHCP clients
option broadcast-address 192.168.1.255; # Default broadcastaddress to be used by DHCP clients
option routers 192.168.1.1; # Default gateway to be used by DHCP clients
option domain-name "your-domain.org";
option domain-name-servers 40.175.42.254, 40.175.42.253; # Default DNS to be used by DHCP clients
option netbios-name-servers 192.168.1.100; # Specify a WINS server for MS/Windows clients.
# (Optional. Specify if used on your network)

# DHCP requests are not forwarded. Applies when there is more than one ethernet device and forwarding is configured.
# option ipforwarding off;

default-lease-time 21600; # Amount of time in seconds that a client may keep the IP address
max-lease-time 43200;

option time-offset -18000; # Eastern Standard Time
# option ntp-servers 192.168.1.1; # Default NTP server to be used by DHCP clients
# option netbios-name-servers 192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless you understand Netbios very well
# option netbios-node-type 2;

# We want the nameserver "ns2" to appear at a fixed address.
# Name server with this specified MAC address will recieve this IP.

host ns2 {
next-server ns2.your-domain.com;
hardware ethernet 00:02:c3:d0:e5:83;
fixed-address 40.175.42.254;
}

# Laser printer obtains IP address via DHCP. This assures that the
# printer with this MAC address will get this IP address every time.

host laser-printer-lex1 {
hardware ethernet 08:00:2b:4c:a3:82;
fixed-address 192.168.1.120;
}
}
***********************************************************************

At the minimum, you would need to change 255.255.255.0 to 255.255.254.0 then you would need to adjust the scope

I would suggest you go to http://www.learntosubnet.com/ and learn about subnetting.. Kinda important if you are going to be managing large networks..