dhcp配置

DHCP三种配置

⼀DHCP分配客户机IP地址

[root@localhost~]#rpm-qdhcp//检查dhcp服务是否安装

[root@localhost~]#mount/dev/cdron/media

[root@localhost~]#cd/media/Packages

[root@localhost~]#.x86_

[root@localhost~]#vim/etc/dhcp/

##DHCPServerConfigurationfile.

#e/usr/share/doc/dhcp*/e

#(5)manpage

#~[root@localhost~]#cat/usr/share/doc/dhcp-4.2.5/e>

/etc/dhcp/[root@localhost~]#vim/etc/dhcp/

optiondomain-name"localhost";

optiondomain-name-rvers202.106.0.20,8.8.8.8;//DNS解析

default-lea-time360;//IP地址默认租约

max-lea-time7200;//IP最⼤租约时间

subnet192.168.200.0netmask255.255.255.0{//⽹段和⼦⽹掩码

range192.168.200.180192.168.200.200;//分配IP地址地址池

optionrouters192.168.200.1;//⽹关

}

[root@localhost~]#systemctlstartdhcpd//开启dhcp服务

[root@localhost~]#vim/etc/sysconfig/network-scripts/ifcfg-eno16777728

TYPE=Ethernet

BOOTPROTO=dhcp//修改

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=yes

IPV6_AUTOCONF=yes

IPV6_DEFROUTE=yes

IPV6_PEERDNS=yes

IPV6_PEERROUTES=yes

IPV6_FAILURE_FATAL=no

NAME=eno16777728

DEVICE=eno16777728

ONBOOT=yes//可以改

IPADDR=192.168.200.101

NETMASK=255.255.255.0

GATEWAY=192.168.200.1

DNS1=202.106.0.20

[root@localhost~]#systemctlrestartnetwork//重启服务

禁⽤并重启，活得地址池IP地址（客户机要进⼊NET模式）

⼆DHCP固定IP地址

[

root@localhost~]#cat/var/lib/dhcpd///查看租约信息并获取⽹卡信息

[root@localhost~]#vim/etc/dhcp/

lea192.168.200.15{

starts52019/08/1607:37:52;

ends52019/08/1607:47:52;

tstp52019/08/1607:47:52;

cltt52019/08/1607:37:52;

bindingstateactive;

nextbindingstatefree;

rewindbindingstatefree;

hardwareethernet00:0c:29:93:3e:e3;

添加

hostwin7{

hardwareethernet00:0c:29:93:3e:e3;

fixed-address192.168.200.99;//固定IP地址

若是win7客户机不成功

cmd命令中输⼊ipconfig/relea释放IP

ipconfig/renew获取IP

三DHCP中继配置

需要DHCP服务器⼀个和两个⽹卡的DHCP中继

中继器的配置情况如下：

[root@localhost~]#mount/dev/cdron/media

[root@localhost~]#cd/media/Packages

[root@localhost~]#.x86_

[root@localhost~]#vim/etc/sysconfig/network-scripts/ifcfg-eno16777728

删除⽹关和DNS

[root@localhost~]#cp/etc/sysconfig/network-scripts/ifcfg-eno16777728/etc/sysconfig/network-scripts/ifcfg-eno33554960

[root@localhost~]#vim/etc/sysconfig/network-scripts/ifcfg-eno33554960

修改并删除

[root@localhost~]#systemctlrestartnetwork

[root@localhost~]#dhcrelay192.168.200.111//开启中继服务

在DHCP服务器的配置：

[root@localhost~]#vim/etc/dhcp/

添加这四⾏命令

subnet192.168.100.0netmask255.255.255.0{

range192.168.100.15192.168.100.40;

optionrouters192.168.100.1;

}

[root@localhost~]#systemctlrestartdhcpd

[root@localhost~]#vim/etc/sysconfig/network-scripts/ifcfg-eno16777728

在中继器中ping

若要ping通window需要关闭防⽕墙

[root@localhost~]#e

rm'/etc/systemd/system/e'//关闭中继的防⽕墙

rm'/etc/systemd/system//e'