HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
1
Lab exam
Time: 03 hours
Student name: Hà Vũ Thanh Thuận
Student ID: ITITIU13122
Topology
Task 1: IP addressing
Step 1. Consider the network requirements:
The 172.x.0.0/ network must be subnetted to provide addresses for the three LANs.
o LAN 1 requires 1000 addresses
o LAN 2 requires 500 address
o LAN 3 requires 500 address
The subnet-mask /30 must be used for the serial connections between the three routers.
The loopback address representing the link between the HQ router and the ISP will use the 100.100.100.100/32 network.
The bandwidths of the links between R1 and R2; R1 and R3 are 10Mbps.
The bandwidth of the link between R2 and R3 is 2Mbps.
Step 2. List the subnets used in the network in above topology.
Subnet 1: 172.22.0.0/22
Subnet 2: 172.22.4.0/23
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
2
Subnet 3: 172.22.6.0/23
Subnet 4: 172.22.8.0/30
Subnet 5: 172.22.8.4/30
Subnet 6: 172.22.8.8/30
…
Step 3. Filling the following table:
Device Interface IP Address Subnet Mask Descriptions / Default Gateway
R1 Fa 172.22.0.1/22 255.255.252.0 N/A
Serial0 172.22.8.1/30 255.255.255.252 N/A
Serial1 172.22.8.5/30 255.255.255.252 N/A
Lo0 100.100.100.100/32 255.255.255.255 connect to ISP
R2 Fa 172.22.4.1/23 255.255.254.0 N/A
Serial0 172.22.8.2/30 255.255.255.252 N/A
Serial1 172.22.8.9/30 255.255.255.252 N/A
R3 Fa 172.22.6.1/23 255.255.254.0 N/A
Serial0 172.22.8.10/30 255.255.255.252 N/A
Serial1 172.22.8.6/30 255.255.255.252 N/A
PC1 NIC 172.22.0.2/22 255.255.252.0 172.22.0.1/22
PC2 NIC 172.22.4.2/23 255.255.254.0 172.22.4.1/23
PC3 NIC 172.22.6.2/23 255.255.254.0 172.22.6.1/23
Task 2: Perform Basic Router Configurations.
Perform basic configuration of the R1, R2 and R3 routers according to the following guidelines:
1. Configure the router hostname.
2. Disable DNS lookup.
3. Configure an EXEC mode password.
4. Configure a password for console connections.
R1
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
3
R2
R3
Task 3: Configure and Activate Serial and Ethernet Addresses.
Step 1. Configure interfaces of R1, R2, and R3.
Configure the interfaces on the routers with the IP addresses from the addressing table.
Step 2. Verify IP addressing and interfaces.
Output of show ip interface brief command:
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
4
Step 3. Configure the bandwidth of the serial links.
Step 3. Configure Ethernet interfaces of PC1, PC2, and PC3.
Configure the Ethernet interfaces of PC1, and PC2 with the IP addresses and default gateways and test the PC configuration by pinging the default gateway.
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
5
Task 4: Configure OSPF
Step 1. Enable OSPF routing on three router.
Show your OSPF routing configuration?
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
6
Step 2. Verify the routing table and answer the following questions.
Printout the output of show ip route command:
What are the directly connected networks of R2?
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
7
What are the networks R2 learned via OSPF advertisements?
What are the paths from R2 to LAN 1 and LAN 3? Why does R2 use these paths?
R2 to LAN1
R2 to LAN 3
R2 will use paths because of the bandwidth which is from R2 To R1 and from R1 to R3 that are biggest, about 10Mbps
What are the next-hop IP addresses?
Nex-hop IP address of R2 and R3 is R1
Step 3. Verify the OSPF protocol.
Printout the output of show ip ospf interface command for an interface and explain the meaning of the
timers shown in the output:
Hello: interval time (in seconds) that one router sends one ospf hello packet
Dead: time (in seconds) that waiting before the declare a neighbor dead
Wait: timers interval that causes the interface that want to exit out of the wait period. This timer is usually equal to the dead timer interval
Retransmit: Time for waiting before retransmitting a database description packet when it’s not been acknowledged
Hello due in: An ospf hello packet that is sent on this interface from time “show ip ospf interface” is solved
Task 5: Running OSPF on a Stub Network
Step 1. Configure loop-back interface on router R1 to simulate the connection to ISP. R1 use default route to send the traffic to the internet and distributes this default route into the OSPF domain.
Show your configure
Step 2. Show the routing tables of R1, R2, and R3 and explain the entries corresponding to this step.
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
8
The traffics that doesn’t destined to any ips addresses in the topology wiil be sent to the ISP
Task 6: Document your report and submit
Step 1: On each router, capture the following command output to a text file and attaché to the end of your report.
Running configuration
Routing table
Interface summarization
Output from show ip protocols
Step 2: Submit your final report to Blackboard.
R1#show running-config
Building configuration...
Current configuration : 1326 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
9
boot-start-marker
boot-end-marker
!
enable secret 5 $1$e1fE$6T6vJU30ex.JVfB9wE6OU1
!
memory-size iomem 5
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
no ip icmp rate-limit unreachable
ip cef
!
!
ip tcp synwait-time 5
!
ip audit po max-events 100
no ip domain lookup
no ftp-server write-enable
!
!
!
!
!
!
!
interface Loopback0
ip address 100.100.100.100 255.255.255.255
!
interface FastEthernet0
ip address 172.22.0.1 255.255.252.0
speed auto
!
interface Serial0
bandwidth 10000
ip address 172.22.8.1 255.255.255.252
clockrate 64000
!
interface Serial1
bandwidth 10000
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
10
ip address 172.22.8.5 255.255.255.252
!
router ospf 1
log-adjacency-changes
network 172.22.0.0 0.0.3.255 area 0
network 172.22.8.0 0.0.0.3 area 0
network 172.22.8.4 0.0.0.3 area 0
default-information originate
!
ip classless
ip route 0.0.0.0 0.0.0.0 Loopback0
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
line con 0
exec-timeout 0 0
privilege level 15
password cisco
logging synchronous
login
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
password cisco
login
!
end
R1#
R2#show running-config
Building configuration...
Current configuration : 1193 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
11
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$vFZN$Tbciwqjtq/uWtv.oqEY33/
!
memory-size iomem 5
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
no ip icmp rate-limit unreachable
ip cef
!
!
ip tcp synwait-time 5
!
ip audit po max-events 100
no ip domain lookup
no ftp-server write-enable
!
!
!
!
!
!
!
interface FastEthernet0
ip address 172.22.4.1 255.255.254.0
speed auto
!
interface Serial0
bandwidth 10000
ip address 172.22.8.2 255.255.255.252
clockrate 64000
!
interface Serial1
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
12
bandwidth 2000
ip address 172.22.8.9 255.255.255.252
!
router ospf 1
log-adjacency-changes
network 172.22.4.0 0.0.1.255 area 0
network 172.22.8.0 0.0.0.3 area 0
network 172.22.8.8 0.0.0.3 area 0
!
ip classless
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
line con 0
exec-timeout 0 0
privilege level 15
password cisco
logging synchronous
login
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
password cisco
login
!
end
R2#
R3#show running-config
Building configuration...
Current configuration : 1194 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
13
!
hostname R3
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$p7CL$2slZ.DIQ5.UmhOVpaM/qf0
!
memory-size iomem 5
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
no ip icmp rate-limit unreachable
ip cef
!
!
ip tcp synwait-time 5
!
ip audit po max-events 100
no ip domain lookup
no ftp-server write-enable
!
!
!
!
!
!
!
interface FastEthernet0
ip address 172.22.6.1 255.255.254.0
speed auto
!
interface Serial0
bandwidth 2000
ip address 172.22.8.10 255.255.255.252
clockrate 64000
!
interface Serial1
bandwidth 10000
HCMC International University Computer Networks Dr. Phuong Vo Date: 07-12-2015
14
ip address 172.22.8.6 255.255.255.252
!
router ospf 1
log-adjacency-changes
network 172.22.6.0 0.0.1.255 area 0
network 172.22.8.4 0.0.0.3 area 0
network 172.22.8.8 0.0.0.3 area 0
!
ip classless
no ip http server
no ip http secure-server
!
no cdp log mismatch duplex
!
line con 0
exec-timeout 0 0
privilege level 15
password cisco
logging synchronous
login
line aux 0
exec-timeout 0 0
privilege level 15
logging synchronous
line vty 0 4
password cisco
login
!
end
R3#
END.
Top Related