Lab 3.5.3 – Troubleshooting Frame Relay (Answers)

Lab 3.5.3 – Troubleshooting Frame Relay (Answers)

Topology Diagram

Addressing Table

Learning Objectives

Practice Frame Relay troubleshooting skills.

Scenario

In this lab, you will practice troubleshooting a misconfigured Frame Relay environment. Load or have your instructor load the configurations below into your routers. Locate and repair all errors in the configurations and establish end-to-end connectivity. Your final configuration should match the topology diagram and addressing table. All passwords are set to cisco except the enable secret password which is set to class.

Task 1: Prepare the Network

Step 1: Cable a network that is similar to the one in the topology diagram.

Step 2: Clear any existing configurations on the routers.

Step 3: Import the configurations.

Router 1

!
hostname R1
!
enable secret class
!
no ip domain lookup
!
!
!
!
interface Loopback0
ip address 172.18.11.254 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/1
no ip address
shutdown
no fair-queue
clockrate 125000
!
interface Serial0/0/0
ip address 172.18.221.1 255.255.255.252
encapsulation frame-relay
frame-relay map ip 172.18.221.2 678 broadcast
frame-relay map ip 172.18.221.2 182 broadcast
! The DLCI is mistyped and needs to be corrected for connectivity.
frame-relay map ip 172.18.221.1 182
! A Frame Relay map for the interface IP address is often overlooked,
! because most other types of interfaces can reach their own address.
no frame-relay inverse-arp
no shutdown
!
router eigrp 1
network 172.18.221.0
network 172.18.11.0
no auto-summary
!
!
!
line con 0
password cisco
logging synchronous
line aux 0
line vty 0 4
password cisco
login
!
end

Router 2

!
hostname R2
!
enable secret class
!
no ip domain lookup
!
interface Loopback0
ip address 172.18.111.254 255.255.255.0
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
no fair-queue
!
interface Serial0/0/1
ip address 172.18.221.2 255.255.255.252
encapsulation frame-relay
clockrate 125000
frame-relay map ip 172.18.221.1 181 broadcast
! The broadcast keyword was forgotten. Without the broadcast keyword,
! multicast packets are not sent with this DLCI. This prevents
! EIGRP from forming adjacencies.
frame-relay map ip 172.18.221.2 181
! A Frame Relay map for the interface IP address is often overlooked,
! because most other types of interfaces can reach their own address.
no frame-relay inverse-arp
frame-relay lmi-type ansi
! The Frame Relay switch is using the default LMI type, which is
! cisco. This command must be removed for the link to work.
no shutdown
! It is common to forget that interfaces on a router
! are shutdown by default.
!
router eigrp 1
network 172.18.221.0
network 172.18.111.0
no auto-summary
!
!
!
line con 0
password cisco
logging synchronous
line aux 0
line vty 0 4
login
!
end
FR-Switch:
!
hostname FR-Switch
!
!
enable secret class
!
!
!
no ip domain lookup
frame-relay switching
!
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
encapsulation frame-relay
no fair-queue
clockrate 125000
frame-relay intf-type dce
frame-relay route 182 interface Serial0/0/1 181
no shutdown
!
interface Serial0/0/1
no ip address
clockrate 125000
encapsulation frame-relay
frame-relay intf-type dce
frame-relay route 181 interface Serial0/0/1 182
! Without a route statement, the Frame Relay switch does not know how
! to switch the Frame Relay packets.
no shutdown
!
!
!
!
line con 0
password cisco
logging synchronous
line aux 0
line vty 0 4
password cisco
login
!
end

Task 2: Troubleshoot and Repair the Frame Relay Connection Between R1 and R2.

Task 3: Document the Router Configurations

On each router, issue the show run command and capture the configurations.

Task 4: 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.