Linux DHCP service

1 DHCP service

controlled by the server for a period IP address range, the IP address and subnet mask assigned by the server can be automatically obtained when the client logs on to the server .

/etc/dhcpd.conf master configuration file

Ddns-update-styleinterim; /*DHCP supported DNS Dynamic Update method */
Ignore client-updates; /* Ignore client DNS Dynamic Update */

Option Domain-name "benet.com"; /* Domain name */
Option Domain-name-servers 192.168.1.1,202.103.24.68; /*dns ip*/
Option Broadcast-address 192.168.1.255;/* broadcast address */
default-lease-time86400; /* Rental period 1 days, number of seconds */
max-lease-time172800; /* Maximum rental period 2 days */

Subnet 192.168.1.0 netmask 255.255.255.0 {/*Scope Network Segment*/
Range 192.168.1.11 192.168.1.100; /*ipAddress segment Range*/
Option routers192.168.1.1; /*Gateway address*/
Option Subnet-mask 255.255.255.0; /*Subnet Mask*/

/*bindingPc1HostIpaddress configuration*/
Host pc1{
Hardware Ethernet 00:a0:cc:cf:9c:14; /*Binding MachineMacAddress*/
fixed-address192.168.1.20; /*Maximum rental period2days*/
}

}

/var/lib/dhcpd/dhcp.leases Server Lease file

Server DHCPD Start

DHCP relay

/etc/sysconfig/dhcrelay master configuration file

# Command Line Optionshere
interfaces= "Eth1 eth2"
Dhcpservers= "192.168.1.1"

Vim/etc/sysct1.conf

Net.ipv4.ip_forward=1

Sysct1-p

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Linux DHCP service