After configuring a PPPoE client on and Ethernet interface, you discover the connection is not working. You execute the show run command to view the PPPoE configuration, part of which is shown in the following output:
What command is missing?
A. vpdn-group
B. request dialin
C. protocol pppoe
D. vpdn enable
Explanation:
The command vpdn enable is required to enable virtual private dialup networking. If this command has not been executed, the other commands will not take effect. While some commands are optional, the following tasks are required to set up the PPP over Ethernet client feature:
• Enable PPPoE in a VPDN Group
• Configure a PPPoE Client
• Configure the Dialer Interface
The first step includes these three sub-tasks:
1. Enable virtual private dialup networking using the vpdn enable command.
2. Associate a VPDN group with a customer or VPDN profile using the vpdn-group name command.
3. Create a request-dialin VPDN subgroup using the request-dialin command.
4. Enable the VPDN subgroup to establish PPPoE sessions using the protocol pppoe command.
In the output in the scenario, we can see that all tasks were taken care of in the first section except for enabling virtual private dialup networking. Had hat been done, the first section would correctly appear as:
vpdn enable
vpdn-group 1
request-dialin
protocol pppoe
!
The rest of the configuration is correct. The following section configures the PPPoE client and specifies the dialer interface to use for cloning:
interface ethernet1/1
pppoe-client dial-pool-number 1
pppoe-client dial-pool-number 2
The following sections configure two dialer interfaces. They specify that the IP addresses for the interfaces are obtained via PPP/IPCP (IP Control Protocol) address negotiation and that the dialing pools to use to connect to a specific destination subnetwork. Finally, they configure the interfaces to belong to a specific dialing group.
!
interface dialer 1
ip address negotiated
dialer pool 1
dialer-group 1
!
interface dialer 2
ip address negotiated
dialer pool 2
dialer-group 2
Objective:
Layer 2 Technologies
Sub-Objective:
Configure and verify PPP