Configuration of dhcp service under rh-9 1

Rh-9 dhcp service configuration 1 -- Linux Enterprise Application-Linux server application information, the following is read details. 1. dhcp installation: Use rpm-ivh to install the three software packages dhcp-*** dhcp-devel-*** dhclient -***
2. dhcp server configuration: The dhcp Service is configured and run according to/etc/dhcpd. conf. It does not exist by default. However, a template file is installed when the dhcp service is installed, at this path/usr/share/doc/dhcp-3.0pl1 (letter l and number 1)/dhcpd. conf. sample
# Cp/usr/share/doc/dhcp-3.0pl1/dhcpd. conf. sample/etc/dhcpd/conf
3. Configuration File Format: dhcpd. conf format
Option/parameter # these options are globally valid
Statement {
Option/parameter # these options are partially valid
}
4. Declarations are used to define the network layout and IP addresses provided to clients.
[Table = 98%] [tr] [td] declare [/td] [td] function [/td] [/tr] [tr] [td] shared-network name {. ..} [/td] [td] define super scope [/td] [/tr] [tr] [td] subnet network No. netmask subnet mask {...} [/td] [td] defines the scope (or ip subnet) [/td] [/tr] [tr] [td] Starting ip address of range end ip Address [/td] [td] defining scope (or ip subnet) range: [/td] [/tr] [tr] [td] host name {...} [/td] [td] defines the reserved Address [/td] [/tr] [tr] [td] group {...} [/td] [td] defines a set of parameters [/td] [/tr] [/table]
5. the parameter is a value that compares or controls dhcp server behavior.
[Table = 98%] [tr] [td] parameter [/td] [td] function [/td] [/tr] [tr] [td] ddns-update-style type [/td] [td] defines the supported dns dynamic update types (comparison) only use the global [/td] [/tr] [tr] [td] allow/ignore client-updates [/td] [td] to allow/ignore the client to update dns records only use the global [/ td] [/tr] [tr] [td] default-lease-time number [/td] [td] specifies the default lease term [/td] [/tr] [tr] [td] max-lease-time number [/td] [td] specifies the maximum lease term [/td] [/tr] [tr] [td] hardware-type MAC address [/td] [td] specifies the NIC interface type and mac Address [/td] [/tr] [tr] [td] server-name host name [/td] [td] Notification dhcp client server host name [/td] [/tr] [tr] [td] fixed-address IP address [/td] [td] assigned to the client a fixed IP address [/td]] [/tr] [/table]
6. The option is used to configure the optional parameters of the dhcp client. They all start with the option keyword.
[Table = 98%] [tr] [td] Option [/td] [td] function [/td] [/tr] [tr] [td] subnet-mask subnet mask [/td] [td] specifies the subnet mask for the client [/td] [/tr] [tr] [td] domain-name "domain name" [/td] [td] as the client specify the dns domain [/td] [/tr] [tr] [td] domain-name-server IP Address
[/Td] [td] specifies the IP address of the dns server for the client [/td] [/tr] [tr] [td] host-name "host name" [/td] [td] specify the host name [/td] [/tr] [tr] [td] routers IP Address [/td] [td] for the client to specify the default gateway [/td] [/tr] [tr] [td] broadcast-address broadcast address [/td] [td] specifies the broadcast address for the client [/td] [/tr] [tr] [td] netbios- name-servers IP Address [/td] [td] specifies the IP address of the wins server for the client [/td] [/tr] [tr] [td] netbios-node-type node type [/td] [td] specify the node type for the client [/td] [/tr] [tr] [td] ntp-server IP Address [/td] [td] specify the network for the client IP address of the time server [/td] [/tr] [tr] [td] nis-servers IP Address [/td] [td] specifies the IP address of the nis domain server on the client [/td]] [/tr] [tr] [td] nis-domain "name" [/td] [td] specifies the name of the nis domain to which the client belongs [/td] [/tr] [tr] [td] time-offset difference [/td] [td] specifies the offset difference between the client and Greenwich Mean time [/td] [/tr] [tr] [td] the preceding options can be used globally or locally [/td] [td] [/td] [/tr] [/table]