ELTEX ESR-200 - DHCP Server Configuration

ESR Series Routers Operation Manual 41
esr(config)# privilege root level 3 "show interfaces bridge"
esr(config)# privilege root level 10 "show interfaces"
Configuration changes will take effect when the configuration is applied and only for new user
sessions:
esr# commit
Configuration has been successfully committed
esr# confirm
Configuration has been successfully confirmed
esr#
7.5 DHCP server configuration
Integrated DHCP server of the router allows you to configure LAN device network settings. Router
DHCP server is able to send additional options to network devices, for example:
 default-router—IP address of the router used as default gateway.
 domain-name—domain name which will be used by client while solving host names via
domain name system (DNS).
 dns-server—list of domain name server addresses for the current network that should be
known by the client. Server addresses are listed in descending order of their preference.
Objective: Configure DHCP server operation in a local network that belongs to the 'trusted' security
zone. Define IP address pool from 192.168.1.0/24 subnet for distribution to clients. Define address lease
time equal to 1 day. Configure transmission of the default route, domain name and DNS server addresses
to clients using DHCP options.
Solution:
Create 'trusted' security zone and define the inherence of the network interfaces being used to
zones:
esr# configure
esr(config)# security zone trusted
esr(config-zone)# exit
esr(config)# interface gi1/0/2-24
esr(config-if-gi)# security-zone TRUSTED
esr(config-if-gi)# exit
Create address pool named 'Simple' and add IP address range intended for server clients lease into
this pool. Define parameters of the subnet that the pool belongs to, and the lease time for addresses.
esr# configure
esr(config)# ip dhcp-server pool Simple
esr(config-dhcp-server)# network 192.168.1.0/24
esr(config-dhcp-server)# address-range 192.168.1.100-192.168.1.125
esr(config-dhcp-server)# default-lease-time 1:00:00
Configure transfer of additional network parameters to clients:
 default route: 192.168.1.1
 domain name: eltex.loc
 DNS server list: DNS1: 172.16.0.1, DNS2: 8.8.8.8.
esr(config-dhcp-server)# domain-name "eltex.loc"
esr(config-dhcp-server)# default-router 192.168.1.1
esr(config-dhcp-server)# dns-server 172.16.0.1 8.8.8.8