Network Router User Manual

Chapter 7: DHCP Configuration Guide
68 SmartSwitch Router User Reference Manual
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:
Configuring Client Parameters
You can configure the client parameters shown in the table below.
Define pool of IP addresses to be
used by clients.
dhcp <scope> define pool <ip-range>
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