Chapter 7: DHCP Configuration Guide

Configuring DHCP

By default, the DHCP server is not enabled on the SSR. You can selectively enable DHCP service on particular interfaces and not others. To enable DHCP service on an interface, you must first define a DHCP scope. A scope consists of a pool of IP addresses and a set of parameters for a DHCP client. The parameters are used by the client to configure its network environment, for example, the default gateway and DNS domain name.

To configure DHCP on the SSR, you must configure an IP address pool, client parameters, and optional static IP address for a specified scope. Where several subnets are accessed through a single port, you can also define multiple scopes on the same interface and group the scopes together into a “superscope.”

Configuring an IP Address Pool

To define a pool of IP addresses that the DHCP server can assign to a client, enter the following command in Configure mode:

Define pool of IP addresses to be used by clients.

dhcp <scope> define pool <ip-range>

Configuring Client Parameters

You can configure the client parameters shown in the table below.

Table 5. Client Parameters

Parameter

Value

 

 

address-mask

Address/netmask of the scope’s subnet (This parameter is

 

required and must be defined before any other client

 

parameters are specified.)

 

 

broadcast

Broadcast address

 

 

bootfile

Client boot file name

 

 

dns-domain

DNS domain name

 

 

dns-server

IP address of DNS server

 

 

gateway

IP address of default gateway

 

 

lease-time

Amount of time the assigned IP address is valid for the

 

system

 

 

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SmartSwitch Router User Reference Manual

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Cabletron Systems 9032578-05 manual Configuring Dhcp, Configuring an IP Address Pool, Configuring Client Parameters