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DHCP Setup

Posted 09-16-2010 at 07:14 AM by prayag_pjs
Updated 01-30-2012 at 08:16 AM by prayag_pjs

This document has been success fully implemented on Cantos5

DHCP

Quote:

IP:192.168.20.3
login : root
password:********

Quote:

OS: CentOS-5

Configuration settings:

Code:

#rpm -qa |grep -i dhcp
dhcpv6_client-0.10-33.el5
dhcpv6-0.10-33.el5
dhcp-3.0.5-3.el5

Code:

#yum -y intall dhcp* (if not already installed)

# vim /etc/dhcpd.conf

Code:

ddns-update-style interim;
ignore client-updates;
subnet 192.168.20.0 netmask 255.255.255.0 {
# --- default gateway
        option routers                  192.168.20.1;
        option subnet-mask              255.255.255.0;
#       option nis-domain               "example.com";
#       option domain-name              "example.com";
        option domain-name-servers      192.168.20.3;
#       option domain-name-servers      59.144.127.16;
        option time-offset              -18000; # Eastern Standard Time
#       option ntp-servers              192.168.20.1;
#       option netbios-name-servers     192.168.20.1;
# --- 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 192.168.20.102 192.168.20.190;
        default-lease-time 86400;
        max-lease-time 604800;

        next-server 192.168.20.3;
# for PXE-boot
        filename "pxelinux.0";
 #for PXE-boot

# we want the nameserver to appear at a fixed address

        host host01.example.com
                {hardware ethernet 00:18:DE:09:18:88;
                  fixed-address 192.168.20.200;
}

# Fixed IP :mapping MAC to IP
        host host02.example.com
               {hardware ethernet 00:1D:92:DD:67:0D;
                  fixed-address 192.168.20.105;
                }

Code:

# /etc/init.d/dhcpd restart
# chkconfig dhcpd on
# pgrep dhcpd

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