Tài liệu Lab Scenario 1 -- Frame Relay and OSPF pdf

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Date of Issue: 05-01-2000

by David Wolsefer

Lab Scenario 1 -- Frame Relay and OSPF

Introduction

This lab is designed to be a build-to-specifications test. There are numerous issues that need to be addressed for this

lab to work correctly. The lab is designed to illustrate some of the problems associated with NBMA networks and link￾state routing protocols such as OSPF. Although the lab specifications will require you to solve problems in ways that

you will probably never see in a production network, you will find that the same problem can be solved more than one

way, sometimes using layer 2 techniques and sometimes using layer 3 techniques. When you thoroughly understand

each method, then you will be prepared for any situation.

Network Specifications

When you are finished troubleshooting the network, it should meet the following specifications:

1. R1 must use a physical interface.

2. R3 must use a multipoint subinterface.

3. R4 must use a physical interface.

4. DO NOT use any PVCs or DLCIs except the ones indicated within the drawing.

5. Use OSPF exclusively as the routing protocol. Make all three routers members of area 0. You must use only

the nonbroadcast network type.

6. R3 must always be the designated router. R1 and R4 should never be eligible to be the designated router.

7. R1 may ONLY use a single frame relay map statement. (Hint, you need a layer 3 solution here)

8. R3 may NOT use frame-relay interface DLCI commands.

9. R4 must use a layer 2 technique to solve hub and spoke reachability problems. You may not use the same

technique you used on R1.

10. Make sure you can ping every serial interface and every loopback interface from all three routers.

11. Use the following address scheme for the loopback addresses:

Scenario 1: Frame Relay and OSPF

Introduction

Network Specifications

The Starting Configs

Frame Switch

Hints

Solution Revealed

Grading Yourself

Final Configurations

R1

R3

R4

Scenario 2: Troubleshooting

Introduction

Network Specifications

The Starting Configs

R1

R3

R4

Frame Switch

Hints

Faults Revealed

Grading Yourself

Final Configurations

R1

R3

R4

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@. R1: interface loopback 0 ip address 132.4.1.1 255.255.255.0

a. R3: interface loopback 0 ip address 132.4.3.3 255.255.255.0

b. R4: interface loopback 0 ip address 132.4.4.4 255.255.255.0

12. Use the following address scheme for the serial interface addresses:

@. R1: interface serial 0 ip address 135.6.1.1 255.255.255.0

a. R3: interface serial 0 ip address 135.6.1.3 255.255.255.0

b. R4: interface serial 0 ip address 135.6.1.4 255.255.255.0

13. Configure R1 such that IP packets become discard eligible on the serial 0 interface for DLCI 110.

14. Configure a special broadcast queue on R4 to hold 80 packets and transmit at a rate of 64 packets per

second. The queue should restrict transmission to 124,000 bytes per second.

The Starting Configs

Since this is a construct-to-specifications sort of lab, I will only provide the frame-relay switch configuration.

Frame Switch

version 11.3

service nagle

!

hostname frameswitch

!

ip subnet-zero

ip tcp synwait-time 5

no ip domain-lookup

frame-relay switching

!

interface Ethernet0

no ip address

shutdown

!

interface Serial0

no ip address