Configure Dhcp - Cisco 520-T1 - Small Business Pro SR Secure Router Software Configuration Manual

Configure DHCP

Whenever you change server properties, you must reload the server with the configuration data from the
Note
Network Registrar database.
VLANs
The Cisco Secure Router 520 Series routers support four Fast Ethernet ports on which you can configure
VLANs.
VLANs enable networks to be segmented and formed into logical groups of users, regardless of the
user's physical location or LAN connection.
Configuration Tasks
Perform the following tasks to configure this network scenario:
•
•
The procedures in this chapter assume you have already configured basic router features as well as
Note
PPPoE or PPPoA with NAT. If you have not performed these configurations tasks, see
Router Configuration," Chapter 3, "Configuring PPP over Ethernet with NAT,"
"Configuring PPP over ATM with NAT"
Configure DHCP
Perform these steps to configure your router for DHCP operation, beginning in global configuration
mode:
Command
Step 1
ip domain name name
Example:
Router(config)# ip domain name smallbiz.com
Router(config)#
Step 2 ip name-server server-address1
[server-address2...server-address6]
Example:
Router(config)# ip name-server 192.168.11.12
Router(config)#
Step 3 ip dhcp excluded-address low-address
[high-address]
Example:
Router(config)# ip dhcp excluded-address
192.168.9.0
Cisco Secure Router 520 Series Software Configuration Guide
5-2
Configure DHCP
Configure VLANs
Chapter 5
as appropriate for your router.
Purpose
Identifies the default domain that the router uses to
complete unqualified hostnames (names without a
dotted-decimal domain name).
Specifies the address of one or more Domain
Name System (DNS) servers to use for name and
address resolution.
Specifies IP addresses that the DHCP server
should not assign to DHCP clients. In this
example, we are excluding the router address.
Configuring a LAN with DHCP and VLANs
Chapter 1, "Basic
and Chapter 4,
OL-14210-01