Configure DHCP On REDHAT LINUX-5

DYNAMIC HOST CONTROL PROTOCOL (DHCP)

Setup:
Server: sandeeplinux-server (192.168.4.1 Local Network IP)
Client: Linux & Windows XP/2003 etc...

Requirement: This DHCPD package available on RHEL5 DVD only
dhcp-3.0.5-3.el5.i386.rpm

Installation Of Required Packages:

[root@sandeeplinux-server ~]# rpm -qa |grep dhcp
dhcpv6_client-0.10-33.el5
[root@sandeeplinux-server ~]#

[root@sandeeplinux-server RHEL5_Total_Pack]# rpm -i dhcp-3.0.5-3.el5.i386.rpm
warning: dhcp-3.0.5-3.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
[root@sandeeplinux-server RHEL5_Total_Pack]#

Configure DHCP config file:

NOTE: Modify dhcpd.conf file (Before Modifying any Files take one backup copy)

In this file you will get information to modify dhcpd.conf.sample file which located in “/usr/share/doc/dhcp-3.0.5”

[root@sandeeplinux-server ~]# cd /etc/
[root@sandeeplinux-server etc]# cat dhcpd.conf
#
# DHCP Server Configuration file.
# see /usr/share/doc/dhcp*/dhcpd.conf.sample
#[root@sandeeplinux-server etc]#

GO TO --> /usr/share/doc/dhcp-3.0.5/

[root@sandeeplinux-server etc]# cd /usr/share/doc/dhcp-3.0.5/
[root@sandeeplinux-server dhcp-3.0.5]#

[root@sandeeplinux-server dhcp-3.0.5]# vi dhcpd.conf.sample
ddns-update-style interim;
ignore client-updates;

subnet 192.168.4.0 netmask 255.255.255.0 {

# --- default gateway
option routers 192.168.4.1;
option subnet-mask 255.255.255.0;

option nis-domain "domain.org";
option domain-name "domain.org";
option domain-name-servers 192.168.4.1;

option time-offset -18000; # Eastern Standard Time
# option ntp-servers 192.168.4.1;
# option netbios-name-servers 192.168.4.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
# option netbios-node-type 2;

range dynamic-bootp 192.168.4.128 192.168.4.254;
default-lease-time 21600;
max-lease-time 43200;

# we want the nameserver to appear at a fixed address
host ns {
next-server marvin.redhat.com;
hardware ethernet 12:34:56:78:AB:CD;
fixed-address 192.168.4.100;
}
}
[root@sandeeplinux-server dhcp-3.0.5]#

Now Try To Start DHCPD Service:

[root@sandeeplinux-server RHEL5_Total_Pack]# service dhcpd status
dhcpd is stopped
[root@sandeeplinux-server RHEL5_Total_Pack]# service dhcpd start
Starting dhcpd: [FAILED]
[root@sandeeplinux-server RHEL5_Total_Pack]# chkconfig dhcpd on
[root@sandeeplinux-server RHEL5_Total_Pack]#


IF ITS GETTING FAIL TO START MEANS copy dhcpd.conf.sample file to dhcpd.conf file

[root@sandeeplinux-server dhcp-3.0.5]# cp dhcpd.conf.sample /etc/dhcpd.conf

It will ask for over write dhcpd.conf file give YES

[root@sandeeplinux-server dhcp-3.0.5]# service dhcpd restart
Shutting down dhcpd: [ OK ]
Starting dhcpd: [ OK ]
[root@sandeeplinux-server dhcp-3.0.5]#

Now Check DHCP with Windows Client:



Go To My Network Places --> Properties --> Local Area Connection --> Properties --> General Tab --> Internet Protocol (TCP/IP) --> Properties --> Obtain an IP Address Automatically --> OK