Configuration documentation for DHCP

1. Configuring Yum

Vim/etc/yum.repos.d/rhel-debuginfo.repo

[Rhel-debuginfo]

name=red Hat Enterprise Linux $releasever-$basearch-debug

Baseurl=file:///misc/cd/server

Enabled=1

Gpgcheck=0

Gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-redhat-release

2. Configure IP

Vim/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0

Bootproto=none

Hwaddr=00:0c:29:fc:e2:45

Onboot=yes

ipaddr=192.168.100.1

netmask=255.255.255.0

Vim/etc/sysconfig/network-scripts/ifcfg-eth1

Device=eth1

Bootproto=none

Hwaddr=12:34:56:78:90:ab

Onboot=yes

ipaddr=192.168.200.1

netmask=255.255.255.0

Service Network restart

3. Install and configure DHCP service

Yum Install Dhcp-y

Cp/usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample/etc/dhcpd.conf

Vim/etc/dhcpd.conf

# Global Configuration

Ddns-update-style none; #动态DNS更新方法

Ignore client-updates; # Ignore Client Updates

# Subnet Configuration

#谁写IP谁傻X

Subnet 192.168.100.0 netmask 255.255.255.0 {

# Assign IP address pool, subnet mask, gateway, DNS

Range DYNAMIC-BOOTP 192.168.100.128 192.168.100.254;

Option Subnet-mask 255.255.255.0;

Option routers 192.168.100.1;

Option Domain-name "benet.com";

Option Domain-name-servers 192.168.100.1,192.168.100.2;

#租约时间: Maximum time, update time

Default-lease-time 21600;

Max-lease-time 43200;

# Host configuration (equivalent to retention in Windows)

Host NS {

#next-server marvin.redhat.com;

#hardware Ethernet 12:34:56:78:AB:CD;

#fixed-address 207.175.42.254;

}

Subnet 192.168.200.0 netmask 255.255.255.0 {

Range DYNAMIC-BOOTP 192.168.200.128 192.168.200.254;

Option Subnet-mask 255.255.255.0;

Option routers 192.168.200.1;

Option Domain-name "benet.com";

Option Domain-name-servers 192.168.200.1,192.168.200.2;

Default-lease-time 21600;

Max-lease-time 43200;

Host FTP {

Hardware Ethernet 00:0c:29:60:e4:ad;

Fixed-address 192.168.200.10;

}

Host Web {

Hardware Ethernet 12:34:56:78:90:ab;

Fixed-address 192.168.200.20;

}

}

Service DHCPD Start

Chkconfig DHCPD on

4. Supplement:

Restricting the network interfaces that the DHCP server provides services

Vim/etc/sysconfig/dhcpd

dhcpdargs= "Eth0 eth1"

Lease file

Tail-f/var/lib/dhcpd/dhcpd.leases

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Configuration documentation for DHCP