Linux平台搭建DHCP 服务器过程

# rpm -aq | grep dhcp
# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample .
# mv dhcpd.conf.sample dhcpd.conf

# vi dhcpd.conf
1. Arrange of single subnet
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ddns-update-style interim;  /*dhcp支持的dns动态更新方式*/
ignore client-updates;   /*忽略客户端DNS动态更新*/

# allow booting;
# allow bootp;

subnet 192.168.0.0 netmask 255.255.255.0 {  /*作用域网段*/

# --- default gateway
option routers          192.168.0.1;  /*网关地址*/
option subnet-mask      255.255.255.0;  /*子网掩码*/

option nis-domain       "domain.org";
option domain-name      "domain.org";  /*域名*/
option domain-name-servers  192.168.1.1;  /*dns IP*/

option time-offset      -18000; # Eastern Standard Time
#   option ntp-servers      192.168.1.1;
#   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;

range dynamic-bootp 192.168.0.128 192.168.0.130;   /*ip地址段范围*/
default-lease-time 21600;  /*租期，秒数*/
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;  /*绑定客户机MAC地址*/
fixed-address 207.175.42.245;
}
}
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2. Arrange of multi-subnet
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ddns-update-style interim;
ignore client-updates;

# allow booting;
# allow bootp;

shared-network broadnet {
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.1.255;

#option domain-name "domain.org";
#option domain-name-servers 192.168.1.1;

default-lease-time 86400;
max-lease-time 172800;

subnet 192.168.0.0 netmask 255.255.255.0 {
# --- default gateway
option routers          192.168.0.1;
range dynamic-bootp 192.168.0.128 192.168.0.128;

#option subnet-mask     255.255.255.0;
#option nis-domain      "domain.org";
#option domain-name     "domain.org";
#option domain-name-servers 192.168.1.1;

option time-offset      -18000; # Eastern Standard Time
#   option ntp-servers      192.168.1.1;
#   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;

#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 207.175.42.245;
#}
}

subnet 192.168.2.0 netmask 255.255.255.0 {
range 192.168.2.10 192.168.2.10;
option routers 192.168.2.1;
}
}
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# service dhcpd start
# cat /var/lib/dhcpd/dhcpd.leases

Client重新获取IP：
> ipconfig /release
> ipconfig /renew
> ipconfig /all

Note:
1)DHCP server的IP地址一定要和IP Range中的某个子网在同一网段，即，有相同的子网掩码和网关
2)即使所有的DHCP Client在同一个LAN中，若它们获取到的IP地址不在同一网段，则不能相互Ping通
3)同样适用Window2008上搭建DHCP Server:
​a. Start->Administrative Tools->Server Manager->Role add->wizard
​​b. Start->Administrative Tools->DHCP