LinuxDHCP service lab report

DHCP lab report -- Yang Dong lab environment server: RedHatEnterpriseLinux5.3 (ip: 192.168.0.20) server: RedHatEnterpriseLinux5.3 (ip: 192.168.0.10, 192.168.1.10) client: windowsxp01. install the software package...

DHCP lab report-- Yang Dong

1. Lab environment

Server: Red Hat Enterprise Linux 5.3 (ip: 192.168.0.20)

Server: Red Hat Enterprise Linux 5.3 (ip: 192.168.0.10, 192.168.1.10)

Client: windows xp

 

01. install the software package

[Root @ yang ~] # Rpm-ihv/media/Server/dhcp-3.0.5-18.el5.i386.rpm

 

1. Tutorial 1: configure one serverDHCPServers are allocated to LAN usersIpAddress.

 

01. modify the configuration file.

[Root @ yang ~] # Cp-rf/usr/share/doc/dhcp-3.0.5/dhcpd. conf. sample/etc/dhcpd. conf

Cp: overwrite "/etc/dhcpd. conf "? Y

[Root @ yang ~] # Vim/etc/dhcpd. conf

Ddns-update-style interim;

Ignore client-updates;

Subnet 192.168.0.0 netmask 255.255.255.0 {

Option routers 192.168.0.1;

Option subnet-mask limit 255.0;

Option nis-domain "yangdong.com ";

Option domain-name "yangdong.com ";

Option domain-name-servers 61.147.37.1;

Option time-offset-18000; # Eastern Standard Time

Range dynamic-bootp 192.168.0.128 192.168.0.254;

Default-lease-time 21600;

Max-lease-time 43200;

Host ns {

Next-server marvin.redhat.com;

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

Fixed-address 207.175.42.254;

}

}

 

 

 

02. restart the server.

 

 

[Root @ yang ~] # Service dhcpd restart

 

Disable dhcpd: [OK]

Start dhcpd: [OK]

 

03. Client Test

 

Test successful

 

1. Tutorial 2: Configuration ImplementationDHCPRelay proxy service.

 

01. Experiment environment:

Master server installation: [root @ yang ~] # Rpm-ihv/media/Server/dhcp-3.0.5-18.el5.i386.rpm

Install the relay server: [root @ yang ~] # Rpm-ihv/media/Server/dhcp-3.0.5-18.el5.i386.rpm

 

 

 

02. master server configuration:

 

 

①. [Root @ yang ~] # Vim/etc/dhcpd. conf

 

Ddns-update-style interim;

Ignore client-updates;

Subnet 192.168.0.0 netmask 255.255.255.0 {

Option routers 192.168.0.1;

Option subnet-mask limit 255.0;

Option nis-domain "yangdong.com ";

Option domain-name "yangdong.com ";

Option domain-name-servers 61.147.37.1;

Option time-offset-18000; # Eastern Standard Time

Range dynamic-bootp 192.168.0.128 192.168.0.254;

Default-lease-time 21600;

Max-lease-time 43200;

}

Subnet 192.168.1.0 netmask 255.255.255.0 {

Option routers 192.168.1.1;

Option subnet-mask limit 255.0;

Option nis-domain "yangdong.com ";

Option domain-name "yangdong.com ";

Option domain-name-servers 61.147.37.1;

Option time-offset-18000; # Eastern Standard Time

Range dynamic-bootp 192.168.1.128 192.168.1.254;

Default-lease-time 21600;

Max-lease-time 43200;

}

 

 

 

②. Restart the server.

 

 

[Root @ yang ~] # Service dhcpd restart

 

Disable dhcpd: [OK]

Start dhcpd: [OK]

 

 

 

03. relay server configuration

 

 

①. [Root @ hello ~] # Rpm-ihv/media/Server/dhcp-3.0.5-18.el5.i386.rpm

 

Warning:/media/Server/dhcp-3.0.5-18.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186

Preparing... ######################################## ### [100%]

1: dhcp ####################################### #### [100%]

[Root @ hello ~] # Service dhcpd start

Start dhcpd: [failed]

 

 

 

②. [Root @ hello ~] # Vim/etc/sysctl. con

 

Modify: net. ipv4.ip _ forward = 1 // enable the routing function

[Root @ hello ~] # Sysctl-p

Net. ipv4.ip _ forward = 1

Net. ipv4.conf. default. rp_filter = 1

Net. ipv4.conf. default. accept_source_route = 0

Kernel. sysrq = 0

Kernel. core_uses_pid = 1

Net. ipv4.tcp _ syncookies = 1

Kernel. msgmnb = 65536

Kernel. msgmax = 65536

Kernel. shmmax = 4294967295

Kernel. shmall = 268435456

 

 

 

③. [Root @ hello ~] # Vim/etc/sysconfig/dhcrelay

 

# Command line options here

INTERFACES = "eth0 eth1"

DHCPSERVERS = "192.168.0.20"

[Root @ hello ~] # Service dhcrelay start

Start dhcrelay:

[OK]

④ Client test

 

Test successful

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Preparations before the experiment

This article is from "Yang Dong's blog"