dhcp

短命女 2022-01-15 13:53 261阅读 0赞

dhcp服务器设置ip：

\[root@localhost ~\]\# vim /etc/sysconfig/network-scripts/ifcfg-eth0  
IPADDR=172.17.17.2  
NETMASK=255.255.255.0  
GATEWAY=172.17.17.1

\[root@localhost ~\]\# service network restart  
正在关闭接口 eth0： \[确定\]  
关闭环回接口： \[确定\]  
弹出环回接口： \[确定\]  
弹出界面 eth0： \[确定\]  
\[root@localhost ~\]\# ifconfig eth0  
安装DHCP：

\[root@localhost ~\]\# mount /dev/cdrom /mnt  
mount: block device /dev/cdrom is write-protected, mounting read-only  
\[root@localhost ~\]\# yum install dhcp\*  
主配置文件：

\[root@localhost ~\]\# vim /etc/dhcpd.conf  
\[root@localhost ~\]\# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhc  
dhclient-eth0.conf dhcp6s.conf  
dhcp6c.conf dhcpd.conf  
\[root@localhost ~\]\# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf  
cp：是否覆盖“/etc/dhcpd.conf”? y  
\[root@localhost ~\]\# vim /etc/dhcpd.conf  
ddns-update-style interim;  
ignore client-updates;

subnet 172.17.17.0 netmask 255.255.255.0 \{

\# --- default gateway  
option routers 172.17.17.1;  
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

range dynamic-bootp 172.17.17.1 172.17.17.100;  
default-lease-time 21600;  
max-lease-time 43200;  
启动dhcp：\[root@localhost ~\]\# service dhcpd start  
启动 dhcpd： \[确定\]  
\[root@localhost ~\]\#  
中继代理的设置

设置ip：

eth0: 172.17.17.17.1 255.255.255.0

eth1: 192.168.1.1 255.255.255.0

eth2: 192.168.2.1 255.255.255.0

service network restart

安装dhcp：

\[root@localhost ~\]\# mount /dev/cdrom /mnt  
mount: block device /dev/cdrom is write-protected, mounting read-only  
\[root@localhost ~\]\# yum install dhcp\*  
配置文件：

\[root@localhost ~\]\#vim /etc/sysconfig/dhcrelay

INTERFACES="eth0 eth1 eth2"  
DHCPSERVERS="172.17.17.2"

启动dhcrelay：  
\[root@localhost ~\]\#service dhcrelay start

启动 dhcrelay \[确定\]

设置ip转发：

\[root@localhost ~\]\# vim /etc/sysctl.conf

\# Controls IP packet forwarding  
net.ipv4.ip\_forward = 1  
\[root@localhost ~\]\# sysctl -p

客户端测试：

\[root@localhost ~\]\# dhclient eth0  
Internet Systems Consortium DHCP Client V3.0.5-RedHat  
Copyright 2004-2006 Internet Systems Consortium.  
All rights reserved.  
For info, please visit [http://www.isc.org/sw/dhcp/][http_www.isc.org_sw_dhcp]

Listening on LPF/eth0/00:0c:29:0a:35:35  
Sending on LPF/eth0/00:0c:29:0a:35:35  
Sending on Socket/fallback  
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7  
DHCPOFFER from 172.17.17.2  
DHCPREQUEST on eth0 to 255.255.255.255 port 67  
DHCPACK from 172.17.17.2  
bound to 172.17.17.99-- renewal in 10526 seconds.

转载于:https://blog.51cto.com/linyang2012/1109179

[http_www.isc.org_sw_dhcp]: http://www.isc.org/sw/dhcp/