linux-dhcp作用域和类

linux-dhcp作用域和类

安装dhcp server

[root@myhost ~]# hostname dhcp

[root@myhost ~]# Last login: Wed Oct 5 11:38:14 2011 from 192.168.100.1 [root@dhcp ~]# mkdir /mnt/cdrom

[root@dhcp ~]# mount /dev/cdrom /mnt/cdrom

mount: block device /dev/cdrom is write-protected, mounting read-only [root@dhcp ~]# cd /mnt/cdrom/Server/

[root@dhcp Server]# rpm -ivh dhcp-3.0.5-18.el5.i386.rpm

[root@dhcp Server]# vim /etc/sysconfig/network-scripts/ifcfg-eth0

# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]

DEVICE=eth0

BOOTPROTO=static

BROADCAST=192.168.100.255

HWADDR=00:0C:29:14:B3:4D

IPADDR=192.168.100.70

NETMASK=255.255.255.0

NETWORK=192.168.100.0

ONBOOT=yes

~

[root@dhcpetc]# vim /etc/resolv.conf

nameserver 192.168.100.70

超级作用域、空作用域、绑定

[root@dhcp Server]# vim /etc/dhcpd.conf

ddns-update-style interim;

ignore client-updates;

shared-network zzu {

subnet 192.168.20.0 netmask 255.255.255.0 {

option routers 192.168.20.254;

option subnet-mask 255.255.255.0;

option nis-domain "https://www.360docs.net/doc/6613747840.html,";

option domain-name "https://www.360docs.net/doc/6613747840.html,";

option domain-name-servers 192.168.100.70;

option time-offset -18000; # Eastern Standard Time

range dynamic-bootp 192.168.20.128 192.168.20.254;

default-lease-time 21600;

max-lease-time 43200;

host tec { ---ip与mac的绑定，保证每

次分配的地址都是固定的。

next-server https://www.360docs.net/doc/6613747840.html,;

hardware ethernet 12:34:56:78:AB:CD;

fixed-address 192.168.20.100;

}

}

subnet 192.168.30.0 netmask 255.255.255.0 {

option routers 192.168.30.254;

option subnet-mask 255.255.255.0;

option nis-domain "https://www.360docs.net/doc/6613747840.html,";

option domain-name "https://www.360docs.net/doc/6613747840.html,";

option domain-name-servers 192.168.100.70;

option time-offset -18000; # Eastern Standard Time

range dynamic-bootp 192.168.30.128 192.168.30.254;

default-lease-time 21600;

max-lease-time 43200;

host mkt {

next-server https://www.360docs.net/doc/6613747840.html,;

hardware ethernet 00:0C:29:F4:CD:0F;

fixed-address 192.168.30.100;

}

}

subnet 192.168.100.0 netmask 255.255.255.0 {

}

}

# DHCP Server Configuration file.

# see /usr/share/doc/dhcp*/dhcpd.conf.sample

#

~

~

~

"/etc/dhcpd.conf" 45L, 1209C written

[root@dhcp Server]#

[root@dhcp Server]#

[root@dhcp Server]#

[root@dhcp Server]# service dhcpdconfigtest

Syntax: OK

[root@dhcp Server]#

类别

--根据不同的用户群分配不同的地址

[root@dhcpetc]# vim dhcpd.conf

ddns-update-style interim;

ignore client-updates;

――作用域和服务器选项的小区域优先选项

subnet 192.168.20.0 netmask 255.255.255.0 {

--定义类

class "vm" {

match if substring (hardware,1,3) = 00:0C:29; --mac地址前三位匹配的分配的类}

－－基于厂商的分类

class “microsoft-client” {

match if substring (option vendor-class-identifier) =＂MSFT＂;

option 网关；

option dns；

}

option routers 192.168.20.254;

option subnet-mask 255.255.255.0;

option domain-name "https://www.360docs.net/doc/6613747840.html,";

option domain-name-servers 192.168.100.70;

--引用类

pool {

allow members of "vm";

range 192.168.20.1 192.168.20.50;

}

--如果不是vm类的mac分配下面的地址

pool {

deny members of "vm";

range 192.168.20.100 192.168.20.150;

}

default-lease-time 21600;

max-lease-time 43200;

}

"dhcpd.conf" 23L, 547C written

[root@dhcpetc]# service dhcpdconfigtest

Syntax: OK

[root@dhcpetc]#

Client

Linuxclient：

#ifconfig eth0 down

#dhclient -d eth0

--Linux从大到小分的

--Windows相反

windows client：

ipconfig /release

ipconfig /renew

更改动态dns指向

#vim /etc/resolv.conf

nameserver 222.88.88.88

nameserver 222.85.85.85

--DNS是动态产生的nameserver 更改的会被动态产生的覆盖，不想被覆盖需要在

client 设置：

# vim /etc/sysconfig/network-scripts/ifcfg-eth0

--设置添加参数PEERDNS=NO