Hotspot 2: Topology Question

Hotspot 2: Topology Question

640-802 CCNA Hotspot Topology Exhibit

Question 1:
Note: host 172.30.4.4 is wrongly given in Question the correct host must be 172.30.0.4



Answers: 702

Explanation:
The destination layer 2 address is a DLCI for frame-relay network. The destination host packet address is 172.30.0.4 corresponding DLCI is 702.
This can be confirmed by looking at the show frame-relay map output which shows the frame-relay map statements for layer 3 address to its corresponding layer 2 address IP 172.30.0.4 is mapped to DLCI 702 .

Question 2:

Answers: frame-relay map ip 172.30.0.3 196 broadcast

Explanation:

The show frame-relay map command above output provides the dynamic mapping for S-AMER (.3 as per topology the complete address is 172.30.0.3) to DLCI 196.

To create a static frame-relay map on dubai router to S-AMER we use the following command

Syntax: frame-relay map protocol protocol-address dlci [broadcast]

frame-relay map ip 172.30.0.3 196 broadcast

Question 3:

Answers: The serial connection to the MidEast branch office

Explanation:

By seeing the partial running config provided for Dubai router ... We can identify what encapuslation type is configured on each interface

Interface serial 1/0 : encapsulation frame-relay

Interface serial 1/2 and serial 1/3 : Both have encapsulation ppp

Interaface serial 1/1: Has no config info on encapsulation type this determines the default encapsulation (HDLC) is not changed on this interface.

Serial 1/1 is connection to MidEast branch office from Dubai router which has the default encapsulation.

Question 4:

Answers: T1net

RIP V2 SIM NEW

LAB: RIP V2
Question#
Central Florida Widgets recently installed a new router in their office (NEW_RTR). Complete the network installation by performing the initial router configurations and configuring RIP V2 routing using the router Command Line Interface (CLI) on the NEW_RTR .

Click on image for larger picture
Configure the router per the following requirements:
1) Name of the router is NEW_RTR
2) Enable-secret password is cisco
3) The password to access user EXEC mode using the console is class
4) The password to allow telnet access to the router is class
5) IPV4 addresses must be configured as follows:
5.1) Ethernet network 209.165.202.128 /27 – Router has the last assignable host
address in subnet.
5.2) Serial Network is 192.0.2.16 /28 - Router has the last assignable host
address in subnet.
6) Interfaces should be enabled.
7) Router protocol is RIPv2


Explanation:
Step1:
Click on the console host, you will get a pop-up screen CLI of Router.
Router>
Configure the new router as per the requirements provided in Lab question
Requirement 1:
Name of the router is NEW_RTR
Step2:
To change the hostname of the router to NEW_RTR follow the below steps
Router>
Router>enable
Router# configure terminal
Router (config)# hostname NEW_RTR
NEW_RTR(config)#

Requirement 2:
Enable-secret password is cisco
Step3:
To set the enable secret password to cisco use the following command
NEW_RTR(config)#enable secret cisco

Requirement 3:
The password to access user EXEC mode using the console is class
Step 4:
We need to configure the line console 0 with the password class
Also remember to type login command after setting up the password on line con 0 which allows router to accept logins via console.
NEW_RTR(config)# line con 0
NEW_RTR(config-line)#password class
NEW_RTR(config-line)#login
NEW_RTR(config-line)# exit
NEW_RTR(config)#

Requirement 4:
The password to allow telnet access to the router is class
Step 5:
To allow telnet access we need to configure the vty lines 0 4 with the password class
Also remember to type login command after setting up the password on line vty 0 4 which allows router to accept logins via telnet.
NEW_RTR(config)# line vty 0 4
NEW_RTR(config-line)#password class
NEW_RTR(config-line)#login
NEW_RTR(config-line)# exit
NEW_RTR(config)#

Requirement 5:
5.1) Ethernet network 209.165.202.128 /27 – Router has the last assignable host
address in subnet.
5.2) Serial Network is 192.0.2.16 /28 - Router has the last assignable host
address in subnet.
Step 6:
Ethernet network 209.165.202.128 /27 – Router has the last assignable host address in subnet.
Ethernet Interface on router NEW_RTR is Fast Ethernet 0/0 as per the exhibit

First we need to identify the subnet mask
Network: 209.165.202.128 /27
Subnet mask: /27: 27 bits = 8 + 8 + 8 + 3
=8(bits).8(bits).8(bits) .11100000 (3bits)
=255.255.255.11100000
=11100000 = 128+64+32+0+0+0+0+0
= 224
Subnet mask: 255.255.255.224
Different subnet networks and there valid first and last assignable host address range for above subnet mask are
Subnet Networks :::::: Valid Host address range :::::: Broadcast address
209.165.202.0 :::::: 209.165.202.1 - 209.165.202.30 ::::: 209.165.202.31
209.165.202.32 :::::: 209.165.202.33 - 209.165.202.62 ::::: 209.165.202.63
209.165.202.64 :::::: 209.165.202.65 - 209.165.202.94 :::::: 209.165.202.95
209.165.202.96 :::::: 209.165.202.97 - 209.165.202.126 :::::: 209.165.202.127
209.165.202.128 :::::: 209.165.202.129 - 209.165.202.158 :::::: 209.165.202.159
209.165.202.160 :::::: 209.165.202.161 - 209.165.202.190 :::::: 209.165.202.191
209.165.202.192 :::::: 209.165.202.193 - 209.165.202.222 :::::: 209.165.202.223
209.165.202.224 :::::: 209.165.202.225 - 209.165.202.254 :::::: 209.165.202.255
Use above table information for network 209.165.202.128 /27 to identify
First assignable host address: 209.165.202.129
Last assignable host address: 209.165.202.158
This IP address (209.165.202.158) which we need to configure on Fast Ethernet 0/0 of the router using the subnet mask 255.255.255.224
NEW_RTR(config)#interface fa 0/0
NEW_RTR(config-if)#ip address 209.165.202.158 255.255.255.224

Requirement 6:
To enable interfaces
Use no shutdown command to enable interfaces
NEW_RTR(config-if)#no shutdown
NEW_RTR(config-if)#exit
Step 7:
Serial Network is 192.0.2.16 /28 - Router has the last assignable host address in subnet.
Serial Interface on NEW_RTR is Serial 0/0/0 as per the exhibit
First we need to identify the subnet mask
Network: 192.0.2.16 /28
Subnet mask: /28: 28bits = 8bits+8bits+8bits+4bits
=8(bits).8(bits).8(bits) .11110000 (4bits)
=255.255.255.11100000
=11100000 = 128+64+32+16+0+0+0+0
= 240
Subnet mask: 255.255.255.240
Different subnet networks and there valid first and last assignable host address range for above subnet mask are
Subnet Networks ::::: Valid Host address ::::::::::: Broadcast address
192.0.2.0 :::::: 192.0.2.1 - 192.0.2.14 ::::::: 192.0.2.15
192.0.2.16 ::::::: 192.0.2.17 - 192.0.2.30 ::::::: 192.0.2.31
192.0.2.32 :::::::: 192.0.2.33 - 192.0.2.46 :::::: 192.0.2.47
and so on ….

Use above table information for network 192.0.2.16 /28 to identify
First assignable host address: 192.0.2.17
Last assignable host address: 192.0.2.30

We need to configure Last assignable host address (192.0.2.30) on serial 0/0/0 using the subnet mask 255.255.255.240

NEW_RTR(config)#interface serial 0/0/0
NEW_RTR(config-if)#ip address 192.0.2.30 255.255.255.240

Requirement 6:
To enable interfaces
Use no shutdown command to enable interfaces
NEW_RTR(config-if)#no shutdown
NEW_RTR(config-if)#exit

Requirement 7:
Router protocol is RIPv2
Step 8:
Need to enable RIPv2 on router and advertise its directly connected networks
NEW_RTR(config)#router rip
To enable RIP v2 routing protocol on router use the command version 2
NEW_RTR(config-router)#version 2
Optional: no auto-summary (Since LAB networks do not have discontinuous networks)
RIP v2 is classless, and advertises routes including subnet masks, but it summarizes routes by default.
So the first things we need to do when configuring RIP v2 is turn off auto-summarization with the router command no auto-summary if you must perform routing between disconnected subnets.

NEW_RTR (config-router) # no auto-summary

Advertise the serial 0/0/0 and fast Ethernet 0/0 networks into RIP v2 using network command

NEW_RTR(config-router)#network 192.0.2.16
NEW_RTR(config-router)#network 209.165.202.128
NEW_RTR(config-router)#end

Step 9:
Important please do not forget to save your running-config to startup-config
NEW_RTR# copy run start
Any questions are welcomed on above LAB...
Best of Luck!!!!!

EIGRP SIM (New)

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.

Click on Host-G to get CLI of RTR_1
The network 192.168.77.0 is used between RTR_1 Fa0/0 - RTR_2 Fa 0/0
This network needs to be advertise into EIGRP routing process at RTR_1
RTR_1>enable
Password : cisco (Provided by SIM Q )
RTR_1#conf t
RTR_1(conf)#
Step 3.1:
Enter EIGRP routing process for AS 212
RTR_1(conf)#router eigrp 212

Step 3.2:
The network 192.168.77.0 is used between RTR_1 Fa0/0 - RTR_2 Fa 0/0 . Advertise this network into EIGRP
RTR_1(config-router)#network 192.168.77.0
RTR_1(config-router)#end

Step 3.3:
Important save the changes made to router RTR_1
RTR_1#copy run start

Verification:

From RTR_2 CLI
ping RTR_1 Serial 1/0 IP address 198.0.18.6
RTR_2#ping 198.0.18.6
!!!!!
A successful ping shows the new RTR_2 will have full connectivity with other routers.