CCNA Discovery 3 chapter 7

Lab 7.2.3.3 Configuring and Verifying a PPP Link

Step 1: Connect the equipment

Step 2: Perform basic configuration on Router 1

Step 3: Perform basic configuration on Router 2

Step 4: Show the details of Serial 0/0/0 interface on R1

Enter the command show interface serial 0/0/0 to view the details of the interface.

R1#show interface serial 0/0/0

What is the status of Serial 0/0/0?  Jawab : up

Line Protocol is , jawab up

The Internet address is, jawab: 192.168.15.1

Encapsulation is , jawab : HDLC

Step 5: Show the details of Serial 0/0/0 interface on R2

Enter the command show interface serial 0/0/0 to view the details of the interface.

R2#show interface serial 0/0/0

What is the status of Serial 0/0/0? Jawab Up

Line Protocol is , jawab : Up

The Internet address is , jawab 192.168.15.2

Encapsulation is , jawab : HDLC

Step 6: Turn on PPP debugging

Step 7: Change the encapsulation type

What did the debug function report when the PPP encapsulation was applied to each router? Jawab:

00:05:30: Se0/0/0 LCP: MagicNumber 0x06DC4C9C (0x050606DC4C9C)

00:05:30: Se0/0/0 LCP: I CONFREQ [REQsent] id 11 len 10

00:05:30: Se0/0/0 LCP: MagicNumber 0x0F396712 (0x05060F396712)

00:05:30: Se0/0/0 LCP: O CONFACK [REQsent] id 11 len 10

00:05:30: Se0/0/0 LCP: MagicNumber 0x0F396712 (0x05060F396712)

00:05:30: Se0/0/0 LCP: I CONFACK [ACKsent] id 1 len 10

00:05:30: Se0/0/0 LCP: MagicNumber 0x06DC4C9C (0x050606DC4C9C)

00:05:30: Se0/0/0 LCP: State is Open

00:05:30: Se0/0/0 PPP: Phase is UP

00:05:30: Se0/0/0 IPCP: O CONFREQ [Closed] id 1 len 10

00:05:30: Se0/0/0 IPCP: Address 192.168.15.2 (0x0306C0A80F02)

00:05:30: Se0/0/0 CDPCP: O CONFREQ [Closed] id 1 len 4

00:05:30: Se0/0/0 IPCP: I CONFREQ [REQsent] id 1 len 10

00:05:30: Se0/0/0 IPCP: Address 192.168.15.1 (0x0306C0A80F01)

00:05:30: Se0/0/0 IPCP: O CONFACK [REQsent] id 1 len 10

00:05:30: Se0/0/0 IPCP: Address 192.168.15.1 (0x0306C0A80F01)

00:05:30: Se0/0/0 CDPCP: I CONFREQ [REQsent] id 1 len 4

00:05:30: Se0/0/0 CDPCP: O CONFACK [REQsent] id 1 len 4

00:05:30: Se0/0/0 IPCP: I CONFACK [ACKsent] id 1 len 10

00:05:30: Se0/0/0 IPCP: Address 192.168.15.2 (0x0306C0A80F02)

00:05:30: Se0/0/0 IPCP: State is Open

00:05:30: Se0/0/0 CDPCP: I CONFACK [ACKsent] id 1 len 4

00:05:30: Se0/0/0 CDPCP: State is Open

00:05:30: Se0/0/0 IPCP: Install route to 192.168.15.1

Step 8: Show the details of Serial 0/0/0 interface on R1

Enter the command show interface serial 0/0/0 to view the details of the interface.

R1#show interface serial 0/0/0

What is the status of Serial 0/0/0? Jawab : Up

Line Protocol is , jawab Up

The Internet address is , jawab: 192.168.15.1

Encapsulation is, jawab : PPP

Step 9: Show the details of Serial 0/0/0 interface on R2

Enter the command show interface serial 0/0/0 to view the details of the interface.

R2#show interface serial 0/0/0

What is the status of Serial 0/0/0? Jawab : Up

Line Protocol is , jawab : up

The Internet address is ,jawab: 192.168.15.2

Encapsulation is , jawab : PPP

Step 10: Verify that the serial connection is functioning

a.     Ping from R1 to R2 to verify that there is connectivity between the two routers.

R1#ping 192.168.15.2

R2#ping 192.168.15.1

Can the serial interface on the R2 router be pinged from R1?  Jawab : ya

Can the serial interface on the R1 router be pinged from R2? Jawab : ya

If the answer is no for either question, troubleshoot the router configurations to find the error. Repeat the pings until they are successful.

Step 11: Reflection

a.     What command allows you to view the details of a specific interface? Jawab:

show interface serial 0/0/0 (or whichever interface you select).

When should you use the debug function in a router? Jawab:

            What is the default serial encapsulation on a Cisco router?jawab : HDLC

Lab 7.2.5.3 Configuring and Verifying PAP and CHAP Authentication

Step 1: Connect the equipment

Step 2: Perform basic configuration on Router 1

Step 3: Perform basic configuration on Router 2

Step 4: Configure PPP encapsulation on both R1 and R2

Step 5: Verify PPP encapsulation on R1 and R2

Enter the command show interface serial 0/0 to verify the PPP encapsulation on R1 and R2.

R1#show interface serial 0/0/0

R2#show interface serial 0/0/0

Is R1 using PPP encapsulation? Jawab : ya

            Is R2 using PPP encapsulation? Jawab : ya

Step 6: Verify that the serial connection is functioning

Ping from R1 to R2 to verify that there is connectivity between the two routers.

R1#ping 192.168.15.2

R2#ping 192.168.15.1

Can the serial interface on the R2 router be pinged from R1? Jawab : ya

Can the serial interface on the R1 router be pinged from R2?  Jawab : ya

If the answer is no for either question, troubleshoot the router configurations to find the error. Repeat the pings until they are successful.

Step 7: Turn on PPP debugging

Step 8: Configure PPP authentication on R1 with PAP

Step 9: Verify that the serial connection is functioning

Verify that the serial connection is functioning by pinging the serial interface of R2.

Was it successful?  Jawab : tidak

Why or why not? Jawab: Otentikasi PAP belum diatur di R2.

Step 10: Configure PPP authentication on R2 with PAP

What did the debug function report when the PPP authentication was applied? Jawab;

00:07:47: Se0/0/0 PAP: O AUTH-REQ id 1 len 13 from "R2"

00:07:47: Se0/0/0 PAP: I AUTH-REQ id 1 len 13 from "R1"

00:07:47: Se0/0/0 PAP: Authenticating peer R1

00:07:47: Se0/0/0 PAP: O AUTH-ACK id 1 len 5

00:07:47: Se0/0/0 PAP: I AUTH-ACK id 1 len 5

Which line reveals the outgoing authentication acknowledgment? Jawab :

Line 4, se0//00 PAP: O AUTH-ACK id 1 len 5

Which line reveals the incoming authentication request? Jawab:

Line 2, Se0/0/0 PAP: I AUTH-REQ id 1 len 13 from “R1”

Step 11: Verify that the serial connection is functioning

Verify that the serial connection is functioning by pinging the serial interface of R1.

Was it successful? Jawab : ya

Why or why not? Jawab : Username dan password didirikan pada kedua router.

Step 12: Remove PAP from R1 and R2

Step 13: Configure PPP authentication on R1 with CHAP

Step 14: Configure PPP authentication on R2 with CHAP

What did the debug function report when CHAP was applied on R2? Jawab:

00:24:07: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2"

00:24:07: Se0/0/0 CHAP: I CHALLENGE id 2 len 23 from "R1"

00:24:07: Se0/0/0 CHAP: O RESPONSE id 2 len 23 from "R2"

00:24:07: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1"

00:24:07: Se0/0/0 CHAP: O SUCCESS id 1 len 4

00:24:07: Se0/0/0 CHAP: I SUCCESS id 2 len 4

Which authentication method is being used? Jawab : CHAP

What line specifies the incoming authentication request? Jawab:

Line 2, I CHALLENGE id 2 len 23 from “R1”

Which line identifies the outgoing authentication acknowledgment? Jawab:

Line 5, Se0/0/0 CHAP: O SUCCESS id 1 len 4

Step 15: Verify that the serial connection is functioning

Verify that the serial connection is functioning by pinging the serial interface of R1.

Was it successful?  Jawab: ya

Why or why not? Jawab : Kedua router menggunakan PPP dengan CHAP dan username yang sesuai dan password didirikan di kedua router.

Step 16: Verify the serial line encapsulation on R1

Enter the command show interface serial 0/0 to view the details of the interface.

R1#show interface serial 0/0/0

What is the status of Serial 0/0/0? Jawab : Up

Line Protocol is , Jawab : Up

Encapsulation is , jawab PPP

Is the LCP open?jawab : ya

How many NCPs have been established? Jawab 2

Step 17: Verify the serial line encapsulation on R2

Enter the command show interface serial 0/0/0 to view the details of the interface.

R2#show interface serial 0/0/0

What is the status of Serial 0/0/0 , jawab up

Line Protocol is , jawab Up

Encapsulation is , jawab PPP

Is the LCP open? Jawab: ya

How many NCPs have been established? 2

Step 18: Turn off debugging on both R1 and R2

Turn off all debugging by issuing the undebug all command on both R1 and R2.

R1#undebug all

R2#undebug all

Step 19: Reflection

a.     What is an advantage of using CHAP over PAP? Jawab:

harus mencakup bahwa CHAP merupakan protokol disukai karena CHAP berkala
memverifikasi identitas node jauh melalui jabat tangan tiga arah. CHAP menyediakan perlindungan melawan serangan playback melalui penggunaan nilai variabel tantangan yang unik dan terduga. Karena tantangannya adalah unik dan acak, nilai hash yang dihasilkan akan menjadi unik dan acak.

b.    Which PPP protocol is used for establishing a point-to-point link? Jawab : LCP

c.     Which PPP protocol is used for configuring the various Network Layer protocols? Jawab : NCP