Use liunx Service (DHCP service automatically obtains the address)

Automatically obtain the address. In windows, it must be very simple. How can I implement it? After reading this article, let's take a good look ..

Service Management

Dhcp Dynamic IP Address Allocation)

Installation Package

Dhcp-3.0.5-31.el5.i386.rpm

Start the service

Service dhcpd restart

Configuration File

/Etc/dhcpd. conf

Cp/usr/share/doc/dhcp-3.0.5/dhcpd. conf. sample/etc/dhcpd. conf

----------------------------------

Subnet 192.168.1.0 netmask 255.255.255.0 {network disconnection set

Option routers 192.168.1.2; Gateway

Option subnet-mask limit 255.0; Sub-mesh Ma

Option domain-name-servers 202.106.0.20; DNS

Range dynamic-bootp 192.168.1.1 192.168.1.254; the allocation range ranges from large to small.

Default-lease-time 21600; lease period time

Max-lease-time 43200; expired when the lease is exceeded

Help set the physical address

Host ns {

27 next-server marvin.redhat.com;

28 hardware ethernet 12: 34: 56: 78: AB: CD; physical address

29 fixed-address 207.175.42.254; address to be set

-----------------------------------------

Principle:

C client) S server)

--- DHCPDISCOVER ---> discovery

<-- DHCPOFFER ------- response

--- DHCPREQUEST ----> request lease time

<-- DHCPACK --------- confirm the lease

------------------------------

Server lease vim/var/lib/dhcpd. lease

Client lease vim/var/lib/dhclient/chclient-eth0.lease

----------------------

DHCP relay server

Purpose: Use two DHCP servers to divide two hosts with different network disconnections, one of which is used as a relay.

DHCP end

Ddns-update-style interim;

Ignore client-updates;

Subnet 192.168.1.0 netmask 255.255.255.0 {

Option routers 192.168.1.2;

Option subnet-mask limit 255.0;

Option domain-name-servers 202.106.0.20;

Range dynamic-bootp 192.168.1.1 192.168.1.254;

Default-lease-time 21600;

Max-lease-time 43200;

}

Subnet 192.168.0.0 netmask 255.255.255.0 {

Option routers 192.168.0.1;

Option subnet-mask limit 255.0;

Option domain-name-servers 202.106.0.20;

Range dynamic-bootp 192.168.0.2 192.168.0.254;

Default-lease-time 21600;

Max-lease-time 43200;

}

Relay end

Vim/etc/sysconfig/dhcrelay main configuration file

1 # Command line options here

2 DHCRELAYARGS = ""

3 INTERFACES = "eth0 eth1" enable relay pointing to the two NICs for Relay)

4 DHCPSERVERS = "192.168.147.1" DHCP server address

Service dhcrelay restart start service

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