Cisco Systems C819GUK9 Configure DHCP, page Configure VLANs, page, ip domain name name

Chapter 12 Configuring a LAN with DHCP and VLANs

VLANs

When you configure a DHCP server, you must configure the server properties, policies, and DHCP options.

Note Whenever you change server properties, you must reload the server with the configuration data from the Network Registrar database.

VLANs

The Cisco 819 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:

•Configure DHCP, page 12-2

•Configure VLANs, page 12-5

Note The procedures in this chapter assume you have already configured basic router features, as well as PPPoE or PPPoA with NAT. If you have not performed these configurations tasks, see the “Basic Router Configuration” section on page 5-1and “Configuring a VPN Using Easy VPN and an IPSec Tunnel” section on page 13-1as appropriate for your router.

Configure DHCP

Perform these steps to configure your router for DHCP operation, beginning in global configuration mode:

SUMMARY STEPS

1.ip domain name name

2.ip name-serverserver-address1 [server-address2...server-address6]

3.ip dhcp excluded-address low-address[high-address]

4.ip dhcp pool name

5.network network-number [mask prefix-length]

6.import all

7.default-routeraddress [address2...address8]

8.dns-serveraddress [address2...address8]

9.domain-name domain

10.exit

	Cisco 819 Integrated Services Routers Software Configuration Guide
12-2	OL-23590-02