Answers: PPP over Ethernet 2

By Chris July 20, 2016 13:10

Creating a PPPoE configuration requires some practice, so do the lab on your own, and check your answers here. More importantly, find a place to do this lab on gear (or VIRL) or a simulator, and spend the time doing all the verification commands related to PPPoE from Chapter 15 on the ICND2 Cert Guide.  Connecting the details in the verification commands to your configuration is just as big a step.

On to the answers!


Figure 1: Typical Lab Network for Testing PPPoE Configurations


Example 1: Client Config



The new ICND2 200-105 book’s Chapter 15 (published 2016) takes a close look at PPPoE configuration. Interestingly, the client side configuration can look scary, with several unfamiliar commands. However, for parameters, all you have to do is select two parameters that just need to be unique on the local router, and then configure those numbers in the correct places. The numbers are the dialer interface number and the dialer pool number.

This particular lab told you what values to use for each parameter, mainly to make it easier to list a single answer configuration here in the lab. Once armed with the dialer interface number of choice (20 in this case) and dialer pool number (10 in this case), you can just follow a template. You also need to know the same username/password combination that the ISP is expecting to hear from the client router as part of the PPP CHAP authentication exchange (Cert/Skills in this case). Figure 2 shows the template:

Figure 2: Figure 15-28 from the ICND2 200-105 Cert Guide

If you use the template in the figure, and compare it to the answer in Example 1, you will find all the commands. The configuration uses interface dialer 20 (per the requirements), as well as dialer pool 10. No one dialer interface number or dialer pool number is better than another. (Note that often an engineer will use the same dialer pool and dialer interface number just to make operations a little simpler.) Other than those numbers, example 1’s sample answer matches the same commands shown here in Figure 2.

PPP over Ethernet 2
GRE Tunnel 3
By Chris July 20, 2016 13:10
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  1. florent July 6, 05:26

    thank’s wendell…

    Reply to this comment
  2. philippe July 6, 05:28

    Thanks Wendell

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  3. Tom November 8, 08:35

    Appreciate the ISP example along with the client code above. Love your books. Thanks

    Reply to this comment
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