Configuring the Security Appliance DHCP Client
DHCP client support on the Cisco Security appliance is designed for use in SOHO
environments in which digital subscriber line (DSL) and cable modems are used. The DHCP
client can be enabled only on the outside interface of the Security Appliance. When the
DHCP client is enabled, DHCP servers on the outside provide the outside interface with an
IP address.
The DHCP client feature on a Security Appliance is enabled by the ip address dhcp
command:
ip address dhcp [setroute] [retry retry-cnt]
The setroute option tells the Cisco Security Appliance to set its default route using the default
gateway parameter that the DHCP server returns. Do not configure a default route when
using the setroute option.
To view current information about the DHCP lease, enter the following command:
show ip address outside dhcp
The partial configuration in Example 6-8 demonstrates how to use three new features that
are associated with each other: DHCP server, DHCP client, and PAT using the interface IP
address to configure a Security Appliance in a SOHO environment with the inside interface
as the DHCP server.