Dynamic Host Configuration Protocol (DHCP) is used to assign IP addresses and other stuff like gateway and DNS details automatically to the clients. we need a DHCP server configured for offering ipaddress to the clients when it is required .
After installing Centos 6 (Centos 6 installation step by step screenshots ) and configuring network (How to setup network in centos 6)
Update yum repositories and packages by typing the below command
[root@localhost ~]# yum update
Step 1 » Install dhcp server and client using the below command
[root@localhost ~]# yum install dhcp
Step 2 » After installing dhcp server packages along with dependencies .Assign a static ip (eg: “192.168.1.11”) in the same DHCP range for the listening interface ( eg : “eth0” ). Open /etc/sysconfig/network-scripts/ifcfg-eth0 file and make the changes as per your requirement .
DEVICE="eth0" HWADDR="00:0C:29:F1:01:4B" NM_CONTROLLED="yes" ONBOOT="yes" BOOTPROTO="none" IPADDR=192.168.1.11 NETMASK=255.255.255.0 GATEWAY=192.168.1.1
Step 3 » Now open /etc/sysconfig/dhcpd file and add the preferred interface name to DHCPDARGS variable as below
# Command line options here DHCPDARGS=eth0
Step 4 » open /etc/dhcp/dhcpd.conf file and paste the below lines and save it.
#specify domain name option domain-name "krizna.com"; #specify DNS server ip and additional DNS server ip option domain-name-servers 192.168.1.10, 208.67.222.222; #specify default lease time default-lease-time 600; #specify Max lease time max-lease-time 7200; #specify log method log-facility local7; #Configuring subnet and iprange subnet 192.168.1.0 netmask 255.255.255.0 { range 192.168.1.50 192.168.1.254; option broadcast-address 192.168.1.255; #Default gateway ip option routers 192.168.1.1; } #Fixed ip address based on MAC id host Printer01 { hardware ethernet 02:34:37:24:c0:a5; fixed-address 192.168.1.55; }
Step 5 » Now start the service
[root@localhost ~]# service dhcpd start
and type this below command to start dhcp service automatically while booting.
[root@localhost ~]# chkconfig --levels 235 dhcpd on
That’s it .Clients can get IP from DHCP server and Please ensure you don’t have any other dhcp servers in the same network ( Routers might have DHCP enabled ).
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