Task 1: Build the Network. Task Complete

Step 1 Connect devices

a. Connect the routers as shown in the topology diagram. Refer to the Test Plan in Lab 8.2.2 for cabling

required.

b. For each of the routers to be configured, use the erase startup-config and the reload commands from the privileged EXEC prompt, to ensure that you are starting with a clean configuration.

 

Task 2: Configure Router ISPX as a Backup. Task Complete _______

Step 1: Perform basic configuration of the ISPX router

Connect a PC to the console port of the router to perform configurations using a terminal emulation

program.

Configure the router with hostname, passwords, message-of-the–day, and no ip domain lookup.

Router(config)#hostname ISPX

ISPX(config)#line console 0

ISPX(config-line)#password cisco

ISPX(config-line)#login

ISPX(config-line)#exit

ISPX(config)#line vty 0 4

ISPX(config-line)#password cisco

ISPX(config-line)#login

ISPX(config-line)#exit

ISPX(config)#enable password cisco

ISPX(config)#enable secret class

ISPX(config)#no ip domain-lookup

ISPX(config)#banner motd #Unauthorized use prohibited#

Step 2: Configure ISPX router FastEthernet interfaces

Configure the FastEthernet interfaces for the backup links to the Edge2 and BR3 routers. Configure a

description and the IP address, and activate each interface.

Step 3: Configure a static route on the ISPX router to the FilmCompany local network

On the ISPX router, configure a normal static route to the BR3 network 172.18.225.0/25 via the Fa0/0

interface on BR3.

Step 4: Configure a static route on the ISPX router to the stadium local network

On the ISPX router, configure a normal static route to the Edge2 network 172.18.3.0/24 via the Fa0/1

interface on Edge2.

Task 3: Configure the Stadium Edge2 Router. Task Complete: ________

Step 1: Perform basic configuration of the router

Connect a PC to the console port of the router to perform configurations using a terminal emulation program. Erase and reload the router before starting.

Configure the router with a hostname, passwords, message-of-the–day, and no ip domain lookup.

Step 2: Configure stadium router Edge2 interfaces

Configure the Serial 0/1/1 interface with Frame Relay encapsulation. Configure a point-to-point

subinterface for DLCI 110.

Edge2(config)#interface serial0/1/1

Edge2(config-if)#description primary link to BR3

Edge2(config-if)#encapsulation frame-relay

Edge2(config-if)#no shutdown

Edge2(config-if)#interface serial0/1/1.110 point-to-point

Edge2(config-subif)#ip address 172.18.0.9 255.255.255.252

Edge2(config-subif)#frame-relay interface-dlci 110

Edge2(config-fr-dlci)#end

Configure FastEthernet 0/0 interface for the stadium LAN network 172.18.3.0/24.

Configure FastEthernet 0/1 interface for the backup link to the ISPX router per the topology diagram.

Step 3: Configure a dynamic routing protocol on stadium router Edge2

On Edge2, configure the EIGRP routing protocol to advertise the 172.18.3.0/24 network and the

172.18.0.8/30 network. Use EIGRP process ID 10. Disable auto-summary.

Configure EIGRP MD5 authentication to accept updates from the FilmCompany router BR3 on the Frame Relay subinterface.

Sample steps to configure EIGRP authentication are:

Edge2#configure terminal

Edge2(config)#key chain MYCHAIN

Edge2(config-keychain)#key 1

Edge2(config-keychain-key)#key-string securetraffic

Edge2(config-keychain-key)#exit

Edge2(config)#interface serial 0/1/1.110

Edge2(config-subif)#ip authentication mode eigrp 10 md5

Edge2(config-subif)#ip authentication key-chain eigrp 10 MYCHAIN

Edge2(config-subif)#end

Edge2#

Until EIGRP and MD5 configuration are complete on router BR3, no EIGRP updates will be received.

The debug eigrp packet command can be used to view the EIGRP exchange as it is occurring

between the routers.

Task 4: Configure the FilmCompany BR3 Router. Task Complete: ________

Step 1: Perform basic configuration of the router

Connect a PC to the console port of the router to perform configurations using a terminal emulation

program. Erase and reload the router before starting.

Configure the router with a hostname, passwords, message-of-the–day, and no ip domain lookup.

Step 2: Configure router BR3 interfaces

Configure Serial 0/1/0 interface with Frame Relay encapsulation. Configure a point-to-point

subinterface for DLCI 100.

BR3(config)#interface serial0/1/0

BR3(config-if)#description primary link to Edge2

BR3(config-if)#encapsulation frame-relay

BR3(config-if)#no shutdown

BR3(config-if)#interface serial0/1/0.100 point-to-point

BR3(config-subif)#ip address 172.18.0.10 255.255.255.252

BR3(config-subif)#frame-relay interface-dlci 100

BR3(config-fr-dlci)#end

Configure FastEthernet 0/1 interface for the FilmCompany LAN network 172.18.225.0/25.

Configure FastEthernet 0/0 interface for the backup link to the ISPX router per the topology diagram.

Step 3: Configure the dynamic routing protocol on router BR3

On BR3, configure the EIGRP routing protocol to advertise the 172.18.225.0/25 network and the

172.18.0.8/30 network. Use EIGRP process ID 10. Disable auto-summary.

Configure EIGRP MD5 authentication to accept routing updates from the Edge2 router on interface

serial0/1/0.100.

BR3#configure terminal

BR3(config)#key chain MYCHAIN

BR3(config-keychain)#key 1

BR3(config-keychain-key)#key-string securetraffic

BR3(config-keychain-key)#exit

BR3(config)#interface serial 0/1/0.100

BR3(config-subif)#ip authentication mode eigrp 10 md5

BR3(config-subif)#ip authentication key-chain eigrp 10 MYCHAIN

BR3(config-subif)#end

When authentication is configured, both Edge2 and BR3 should begin accepting EIGRP updates. Use

the show ip route command to verify that the routes to the LAN devices have been learned.

Until EIGRP and MD5 configuration are complete on router BR3, no EIGRP updates will be received

successfully. The command debug eigrp packet shows when EIGRP authentication is

successful. Example output of the debug eigrp packet command once BR3 is correctly

configured is shown below:

BR3#debug eigrp packet

00:47:04: EIGRP: received packet with MD5 authentication, key id = 1

00:47:04: EIGRP: Received HELLO on Serial0/1/0.100 nbr 172.18.0.9

Task 5: Conduct Primary Frame Relay Link Testing Based on the Test Plan. Task

Complete: ________

Execute the procedures outlined in Test 1 to test the simulated Frame relay network. Record the results of the tests in the Test 1: Results and Conclusions section.

Step 1: Console into routers Edge2 and BR3 and verify the basic configuration, IP addressing, Frame Relay

Issue the show running-config command for each of the routers to verify passwords, IP addressing, and Frame Relay configuration. See end of lab for router configs.

Step 2: Verify the Frame Relay configuration on Edge2, BR3, and FR1

Use show frame-relay commands to verify the Frame Relay configurations. See Lab 8.2.4 for command output.

show frame-relay map – Status of point-to-point links

show frame-relay pvc – Permanent Virtual Circuit (PVC) status and statistics

show frame-relay lmi – Local Management Interface (LMI) statistics

show frame-relay route – DLCI/interface routing (FR1 switch only)

Step 3: Verify routing table contents on router Edge2

Display the routing table for Edge2 using the show ip route command.

Edge2#sh ip route

Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP

D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area

N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2

E1 – OSPF external type 1, E2 – OSPF external type 2

i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS

level-2

ia – IS-IS inter area, * – candidate default, U – per-user static

route

o – ODR, P – periodic downloaded static route

Gateway of last resort is not set

172.18.0.0/16 is variably subnetted, 4 subnets, 3 masks

C 172.18.0.248/30 is directly connected, FastEthernet0/1

D 172.18.225.0/25

[90/2172416] via 172.18.0.10, 00:09:33, Serial0/0/1.110

C 172.18.0.8/30 is directly connected, Serial0/0/1.110

C 172.18.3.0/24 is directly connected, FastEthernet0/0

Is there an EIGRP route to the FilmCompany LAN 172.18.225.0/25? __________ Ya

What is the AD of this route? __________ 90

What is the next hop IP address to get to this network? ___________ 172.18.0.10 (F/R link)

Does the primary route take the Frame Relay link? __________ Ya

Step 4: Verify routing table contents on router BR3

Display the routing table for BR3 using the show ip route command.

BR3#sh ip route

Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP

D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area

N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2

E1 – OSPF external type 1, E2 – OSPF external type 2

i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS

level-2

ia – IS-IS inter area, * – candidate default, U – per-user static

route

o – ODR, P – periodic downloaded static route

Gateway of last resort is not set

172.18.0.0/16 is variably subnetted, 4 subnets, 3 masks

C 172.18.225.0/25 is directly connected, FastEthernet0/1

C 172.18.225.248/30 is directly connected, FastEthernet0/0

C 172.18.0.8/30 is directly connected, Serial0/0/0.100

D 172.18.3.0/24 [90/2172416] via 172.18.0.9, 00:11:59,

Serial0/0/0.100

Is there an EIGRP route to the Edge2 network 172.18.3.1/24? __________ Ya

What is the AD of this route? __________ 90

Step 5: Verify routing table contents on router ISPX

Display the routing table for ISPX using the show ip route command.

ISPX#show ip route

Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP

D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area

N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2

E1 – OSPF external type 1, E2 – OSPF external type 2

i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS

level-2

ia – IS-IS inter area, * – candidate default, U – per-user

static route

o – ODR, P – periodic downloaded static route

Gateway of last resort is not set

172.18.0.0/16 is variably subnetted, 4 subnets, 3 masks

C 172.18.0.248/30 is directly connected, FastEthernet0/1

S 172.18.225.0/25 [1/0] via 172.18.225.249

C 172.18.225.248/30 is directly connected, FastEthernet0/0

S 172.18.3.0/24 [1/0] via 172.18.0.249

Are there any EIGRP routes? __________ Tidak

Why or why not?

ISPX router tidak menjalankan protokol EIGRP.

 

Are there any static routes and if so, to what network?

Ya, pada BR3 LAN network 172.18.225.0/25 dan pada Edge2 LAN network 172.18.3.0/24

 

What is the purpose of these static routes?

Menyediakan rute dari Edge2 untuk LAN BR3 melalui router ISPX. Jika ISP tidak akan tahu bagaimana untuk sampai ke sana.

Step 6: Test IP connectivity between routers Edge2 and BR3 via the primary Frame Relay link

Ping from Edge2 to the IP address of host PC2. Was the ping successful? __________ Ya

If not, troubleshoot until successful.

 

Ping from BR3 to the IP address of host PC1.

Was the ping successful? __________ Ya

If not, troubleshoot until successful.

Verify that traffic is taking the correct path by using the traceroute command.

Turn off all debugging using the undebug all command.

Record all results in the WAN Design Test Plan document in the Test 1: Results and Conclusions section.

Perform Test 2: Backup Link Configuration Test

Task 6: Configure floating static routes. Task Complete: ________

Step 1: Configure a floating static route on Edge2 and BR3 via the primary Frame Relay link.

On Edge2, configure a static route to the FilmCompany LAN (172.18.225.0/25) using the next hop

address of the interface Fa0/1 on router ISPX. Configure the administrative distance on the floating

static routes to be 130, greater than the administrative distance of the EIGRP learned route.

On BR3, configure a static route to the stadium LAN (172.18.3.0/24) using the next hop address of

the interface Fa0/0 on router ISPX. Configure the administrative distance on the floating static route

to be 130, greater than the administrative distance of the EIGRP learned route.

Task 7: Conduct Backup Link Test. Task Complete: ________

Step 1: Test the backup link though the ISPX router by taking down the primary Frame Relay link

Cause the Frame Relay link from Edge2 to FR1 to fail by shutting down the Serial 0/1/1 interface.

Step 2: Verify routing table contents on router Edge2

Display the routing table for Edge2 using the show ip route command.

Edge2#sh ip route

Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP

D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area

N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2

E1 – OSPF external type 1, E2 – OSPF external type 2

i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS

level-2

ia – IS-IS inter area, * – candidate default, U – per-user

static route

o – ODR, P – periodic downloaded static route

Gateway of last resort is not set

172.18.0.0/16 is variably subnetted, 3 subnets, 3 masks

C 172.18.0.248/30 is directly connected, FastEthernet0/1

S 172.18.225.0/25 [130/0] via 172.18.0.250

C 172.18.3.0/24 is directly connected, FastEthernet0/0

Is there an EIGRP route to the FilmCompany network 172.18.225.0/25 now? __________ Tidak

Is the floating static backup route to the FilmCompany network 172.18.225.0/25 that you defined

earlier now present? __________ Ya

What is the AD of this route? __________ 130

What is the next hop IP address to get to the 172.18.225.0/25 network?

__________________________________________ 172.18.0.250 (ISPX Fa0/1 link)

Does the backup route take the ISPX link? __________ Ya

Step 3: Verify routing table contents on router BR3

Display the routing table for BR3 using the show ip route command.

BR3#sh ip route

Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP

D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area

N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2

E1 – OSPF external type 1, E2 – OSPF external type 2

i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS

level-2

ia – IS-IS inter area, * – candidate default, U – per-user static

route

o – ODR, P – periodic downloaded static route

Gateway of last resort is not set

172.18.0.0/16 is variably subnetted, 3 subnets, 3 masks

C 172.18.225.0/25 is directly connected, FastEthernet0/1

C 172.18.225.248/30 is directly connected, FastEthernet0/0

S 172.18.3.0/24 [130/0] via 172.18.225.250

Continue to issue the show ip route command until the EIGRP route is gone and the floating

static route is installed, otherwise ping responses (echo reply) cannot be sent back to Edge2.

Is there an EIGRP route to the Edge2 network 172.18.3.0/24? __________ Tidak

Is there a floating static route? __________ Ya

What is the AD of this route? __________ 130

What is the next hop IP address to get to the 172.18.3.0/24 network?

__________________________________________ 172.18.225.250 (ISPX Fa0/0)

Step 4: Test IP connectivity between routers Edge2 and BR3 via the backup Ethernet link

a. Ping from PC1 on Edge2 to the IP address of host PC2.

Was the ping successful? __________ Ya

If not, troubleshoot until successful.

Verify that traffic is taking the backup link by using the tracert command from PC1 to PC2. Record the results in the WAN Design Test Plan section Test 2: Results and Conclusions.

Turn off any debugging using the undebug all command.

Step 5: Clean up

Erase the configurations and reload the routers. Disconnect and store the cabling. For PC hosts that are

normally connected to other networks (such as the school LAN or to the Internet), reconnect the

appropriate cabling and restore the TCP/IP settings.

Task 8: Reflection / Challenge

When is it most important to have a backup link? How does a backup link compare to a redundant link?

Link Backup diperlukan ketika hilangnya link primer yang akan menyebabkan hilangnya akses ke sumber daya kritis. Ini adalah biaya / resiko keputusan yang dibuat oleh sebuah organisasi.

 

This lab uses the RIP dynamic routing protocol and floating static routes to demonstrate primary and backup routes. Would it be possible to use all static routes and no dynamic routing protocol?

Ya, tapi rute statis untuk semua lokasi jaringan harus ditetapkan untuk komunikasi end-toend
antara jaringan. Harus ada rute untuk mencapai tujuan jaringan dan rute di tempat tujuan untuk kembali, agar
komunikasi dua arah terjadi.