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CCNA640-802：EIGRP实验真题详解

2009-12-01 11:05 519 查看

LAB: EIGRP

Question#

After adding RTR_2 router, no routing updates are being exchanged between RTR_1 and the new location. All other inter connectivity and internet access for the existing locations of the

company are working

properly.
The task is to identify the fault(s) and correct the router configuration to provide full connectivity between the routers.
Access to the router CLI can be gained by clicking on the appropriate host.
All passwords on all routers are cisco .
IP addresses are listed in the chart below.

RTR_A#show run

!

!

interface FastEthernet0/0

ip address 192.168.60.97 255.255.255.240

!

interface FastEthernet0/1

ip address 192.168.60.113 255.255.255.240

!

interface Serial0/0

ip address 192.168.36.14 255.255.255.252

clockrate 64000

!
router eigrp 212

network 192.168.36.0

network 192.168.60.0

no auto-summary

!
RTR_A#show ip route

192.168.36.0/30 is subnetted, 1 subnets

C 192.168.36.12 is directly connected, Serial 0/0

192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks

C 192.168.60.96/28 is directly connected, FastEthernet0/0

C 192.168.60.112/28 is directly connected, FastEthernet0/1

D 192.168.60.128/28 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0

D 192.168.60.144/28 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0

D 192.168.60.24/30 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0

D* 198.0.18.0 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0
********************************************************************************
RTR_2#show run

!

!

interface FastEthernet0/0

ip address 192.168.77.34 255.255.255.252

!

interface FastEthernet0/1

ip address 192.168.60.65 255.255.255.240

!

interface FastEthernet1/0

ip address 192.168.60.81 255.255.255.240

!

!
router eigrp 22

network 192.168.77.0

network 192.168.60.0

no auto-summary

!
RTR_2#show ip route

192.168.60.0/28 is variably subnetted, 2 subnets

C 192.168.60.80 is directly connected, FastEthernet1/0

C 192.168.60.64 is directly connected, FastEthernet0/1

192.168.77.0/30 is subnetted, 1 subnets

C 192.168.77.32 is directly connected, FastEthernet0/0
**********************************************************
RTR_B#show run

!

interface FastEthernet0/0

ip address 192.168.60.129 255.255.255.240

!

interface FastEthernet0/1

ip address 192.168.60.145 255.255.255.240

!

interface Serial0/1

ip address 192.168.60.26 255.255.255.252
!
router eigrp 212

network 192.168.60.0

!
RTR_B#show ip route

192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks

C 192.168.60.24/30 is directly connected, Serial0/1

C 192.168.60.128/28 is directly connected, FastEthernet0/0

C 192.168.60.144/28 is directly connected, FastEthernet0/1

D 192.168.60.96/28 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1

D 192.168.60.112/28 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1

192.168.36.0/30 is subnetted, 1 subnets

D 192.168.36.12 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1

D* 198.0.18.0 [ 90/21026560 ] via 192.168.60.25, 00:00:57, Serial 0/1
**************************************************************************

RTR_1#show run

!

!

interface FastEthernet0/0

ip address 192.168.77.33 255.255.255.252

!

interface Serial1/0

ip address 198.0.18.6 255.255.255.0

!

!

interface Serial0/0

ip address 192.168.36.13 255.255.255.252

clockrate 64000

!

interface Serial0/1

ip address 192.168.60.25 255.255.255.252

clockrate 64000

!

!
router eigrp 212

network 192.168.36.0

network 192.168.60.0

network 192.168.85.0

network 198.0.18.0

no auto-summary

!

ip classless

ip default-network 198.0.18.0

ip route 0.0.0.0 0.0.0.0 198.0.18.5

ip http server
RTR_1#show ip route

192.168.36.0/30 is subnetted, 1 subnets

C 192.168.36.12 is directly connected, Serial 0/0

192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks

C 192.168.60.24/30 is directly connected, Serial0/1
D 192.168.60.128/28 [ 90/21026560 ] via 192.168.60.26, 00:00:57, Serial 0/1

D 192.168.60.144/28 [ 90/21026560 ] via 192.168.60.26, 00:00:57, Serial 0/1

D 192.168.60.96/28 [ 90/21026560 ] via 192.168.36.14, 00:00:57, Serial 0/0

192.168.77.0/30 is subnetted, 1 subnets

C 192.168.77.32 is directly connected, FastEthernet0/0

C 192.0.18.0/24 is directly connected, Serial 1/0

*S 0.0.0.0 via 198.0.18.5
Explanation:

Step1:

Identify the faults in configuration on RTR_1 and RTR_2. As the SIM specifies all other inter connectivity and internet access for the existing locations of the company are working properly.
Routing Protocols used in the SIM is EIGRP with AS 212 as provided by exhibit.

Faults Identified:

1. Wrong AS (EIGRP 22) provided at RTR_2 (New router)
2. RTR_1 does not advertise the new network between RTR_1 and RTR_2 into EIGRP.
We need to correct the above two configuration mistakes to have full connectivity

Step2: Correcting the EIGRP AS to 212

Wrong AS (EIGRP 22) provided at RTR_2 (New router)

All routers that want to exchange routes within EIGRP needs to be in same Autonomous System.
Step 2.1:

First we need to remove the current wrong EIGRP AS 22 from Router RTR_2

Click on Host-F to get CLI of RTR_2
RTR_2>enable

Password : cisco (Provided by SIM Q )

RTR_2#conf t

RTR_2(conf)#

Step 2.2:

Removing the wrong EIGRP routing process with AS 22

RTR_2(conf)#no router eigrp 22

The above statement removes all the EIGRP configuration configured for AS 22 .
Step 2.3:

Adding the correct EIGRP configuration

Start the EIGRP routing process with AS 212

RTR_2(conf)#router eigrp 212

Step 2.4:

Advertise the directly connected networks into EIGRP on RTR_2
Fa 0/0 - 192.168.77.34

Fa 1/0 - 192.168.60.81

Fa 0/1 - 192.168.60.65
RTR_2(config-router)#network 192.168.60.0
RTR_2(config-router)#network 192.168.77.0

RTR_2(config-router)#no auto-summary

RTR_2(config-router)#end
Step 2.5:
Important save the changes made to router RTR_2

RTR_2#copy run start
Step 3:

RTR_1 does not advertise the new network between RTR_1 and RTR_2 into EIGRP.

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