
PPP over Ethernet (PPPOE)
by Rene Molenaar 15 Comments
Scenario:
You are working for a small company as a network engineer and currently you are still using a dial-up
modem for Internet access. The company will upgrade the Internet access to a DSL connection and
your service provider promised they will send you a Cisco 800 series router so you can configure it
already for PPPoE. The problem is you never configured PPPoE before so it’s time to upgrade your
skills!
Goals:
• Do not configure any IP address on the Fast Ethernet interfaces.
• Router Artemis will be the PPPoE server (to emulate the service provider)
• Configure a DHCP pool on Router Artemis for the PPP connection, use the 192.168.12.0
subnet.
• Configure Router Artemis as a PPPoE server using the DHCP pool you just created. Use a
Virtual-Template and configure the 192.168.12.2 IP address on this router.
• Router Poseidon should get IP address 192.168.12.1 from the PPPoE server.
• Configure Router Poseidon as the PPPoE Client.
• Your end result should be a working PPPoE session and Router Poseidon should get an IP
address from DHCP.
• When your PPPoE connection is working, configure CHAP authentication:
Username: Poseidon
Password: VAULT
• Optional: Configure Router Artemis so PPPoE clients cannot initiate more than 5 sessions
within 1 minute for 10 minutes.
IOS:
c3640-jk9s-mz.124-16.bin
Topology: