NETW204: Assignment 1 (50 points)

Each answer is worth 1 point each, 50 questions = 50 total points. Type answers in the appropriate cell; text will automatically wrap. Post your completed assignment to the dropbox.

NAME

Router Configuration Exercise (5 points)

When configuring a router, there are certain basic tasks performed,

• Naming the router

• Setting passwords

• Configuring interfaces

• Configuring a banner

• Saving changes on a router

• Verifying basic configuration and router operations

Question Answer

1 The first prompt is _______ mode and will allow you to view the state of the router. User

2 What major limitation does this mode have? Will only allow you to view the state of the router

3 What does the router prompt look like for this mode? Router>

4 The enable command is used to enter the privileged mode. What is the major difference between this mode and user mode? Enable allows you to make configuration changes and user will not.

5 What does the router prompt look like for this mode? Router#

Basic Configuration Tasks (18 points)

The table below lists the basic router configuration tasks in the left column. Fill in the blanks in the right column with the correct command syntax for each of the tasks.

Configuration Task Command Syntax Answer

6 Naming the router Router(config)# hostname name

7

8

9

1

0

11 Setting passwords Router(config)#

Router(config)#

Router(config)#

Router(config)#

Router(config)# enable secret password line console 0 password password login line vty 0 4

1

2 Router(config-line)# password password

1

3 Router(config-line)# login

1

4 Configuring a messageof-the-day banner Router(config)# banner motd # message #

1

5

1

6

1

7 Configuring an interface Router(config)#

Router(config-if)#

Router(config-if)# interface type number ip address address mask description description

1

8 Router(config-if)# no shutdown

1

9 Saving changes on a router Router# copy running-config startupconfig

2

0 Using show commands: View current operating config Router# show running-config

2

1 Using show commands: View routing table Router# show ip route

2

2 Using show commands: View brief summary of interface configs Router# show ip interface brief

2

3 Using show commands: View detailed

information on interfaces Router# show interfaces

Basic Routing Principles (8 points)

Static Routing

Question Answer

24 When the IOS learns about a remote network and the interface it will use to reach that network, it adds that route to the ___ ___ (2 words) . . . . Routing table

25 as long as the ___ ___ (2 words) is enabled. Exit interface

26 Static routes are denoted with the code ___ in the routing table. s

27 List and describe three situations in which static routes should be used (use Answer cells 27, 28, and 29) for the three answers. Network consists of only a few routers

28 Network is connected to the internet only through a single ISP

29 Large network is configured in a hub-andspoke topolgy

Dynamic Routing

Dynamic routing protocols are used by routers to share information about the reachability and status of remote networks. Dynamic routing protocols perform several activities.

Question Answer

30 ____ ___ (2 words), which is a routing protocol’s ability to share information about the networks it knows about with other routers that are also using the same routing protocol. Network discovery

31 ____ routing tables, which is a routing protocol’s ability to compensate for any topology changes without involving the network administrator. Maintaining

IP address Assignment Exercise (16 points)

Figure 1

Understanding a router’s place in the network is a prerequisite to moving ahead in your studies of routing and routing protocols. You studied routers extensively in Chapter 1, “Introduction to Routing and Packet Forwarding.” The following sections review some of the basic skills you need to progress to the next step: static routing.

Refer to the topology shown in Figure 1 and document the address scheme. Use the table below to document the IP addresses for all the interfaces. Use the following guidelines, assign addresses from the indicated subnets to the interfaces on the routers and the PCs.

• Assign the first IP address for all LANs to the router interface.

• Assign HQ the first IP address for all WAN links to Branch routers.

• Assign the second IP address from each LAN subnet to the PC on that LAN

• See “Introducing the Topology” in chapter 2 page 67 of your text for examples

Device Interface Address Mask

32 HQ Router Fa0/0 172.16.0.1 255.255.0.0

33 S0/0/0 10.0.0.1 255.255.255.254

34 S0/0/1 10.0.0.1 255.255.255.252

35 R1 Router Fa0/0 192.168.20.1 255.255.255.0

36 Fa0/1 192.168.21.1 255.255.255.0

37 Fa1/0 192.168.22.1 255.255.255.0

38 S0/0/0 10.0.0.2 255.255.255.254

39 R2 Router Fa0/0 192.168.161.1 255.255.255.0

40 Fa0/1 192.168.160.1 255.255.255.0

41 S0/0/0 10.0.0.2 255.255.255.252

42 PC1 172.16.0.2 n/a

43 PC2 192.168.20.2 n/a

44 PC3 192.68.21.2 n/a

45 PC4 192.168.22.2 n/a

46 PC5 192.168.160.2 n/a

47 PC6 192.168.161.2 n/a

34 S0/0/1 10.0.0.5 255.255.255.252

41 S0/0/0 10.0.0.6 255.255.255.0

 

Summary Static Routes (3 points)

Summary routes are used to simplify the routing table and make it more efficient. Create a summary static route for R1 in figure 1 for the 3 LANs it has attached. Use the steps from your text Chapter 2 page 125: Calculating a Summary Route.

192.168.20.0/24 192.168.21.0/24

192.168.22.0/24

Write the networks in binary form.

192.168.0.0 11000000.10101000.00000000.00000000

255.255.252.0 11111111.11111111.11111100.00000000

Question Answer

48 Find subnet mask by counting

Bits matching from left to right: ____. This is your subnet mask for the summary route. 11111111.11111111.11111100.00000000

255.255.252.0

49 Find summary address by putting 0s (zeros) in remaining address positions after the left to right matching ends (For example if the first 21 bits match from the left, put 0s (zeros) in the remaining 11 positions of the 32 bit address to find address for the summary). 11000000.10101000.00000000.00000000

190.168.0.0

50 Summary Route (Address and subnet mask found above combined) for routing table ip route 192.168.0.0 255.255.255.0

34 S0/0/1 10.0.0.5 255.255.255.252

41 S0/0/0 10.0.0.6 255.255.255.0

49 Find summary address by putting 0s (zeros) in remaining address positions after the left to right matching ends (For example if the first 21 bits

192.168.20.0

match from the left, put 0s (zeros) in the remaining 11 positions of the 32 bit address to find address for the summary).

NETW204: Assignment 2 (50 points)

Each answer is worth 1 point each, 50 questions = 50 total points. Type answers in the appropriate cell; text will automatically wrap. Post your completed assignment to the dropbox.

NAME Chadwick Neyland

Distance Vector Routing Protocols

Question Answer

1 What does RIP stand for? Routing Information Protocol

2 What metric does RIP use for Path Selection? Hop count

3 If the metric used by RIP exceeds this value for a route it is considered unreachable, effectively making this value appear to be infinity to RIP? 16

4 How often does RIP send updates by default (update timer)? 30 seconds

5 What are the main differences between RIPv1 and RIPv2? RIPv1 is a classful routing protocol RIPv2 is a class less routing protocol

6 What is convergence and why is it important? Is when the entire network has updated all routing tables, it is important because your network will lag until it is all updated.

7 Is RIP considered to be a fast or slow converging protocol? slow

For the simple 3 router network (Figure 1), fill in the information that would be in each router’s routing table once the network has converged (see example in Chapter 4, pages 192-193).

Figure 1

Questions 8-22 (15 points – first one provided)

R1 HQ R3

Network Interfac e Hop Networ k Interfac e Hop Networ k Interfac e Hop

172.15.0.0 Fa0/0 0 172.16.0.0 S0/0/0 0 172.19.0.0 Fa0/0 0

172.16.0.0 S0/0/0 0 172.18.0.0 S0/0/1 0 172.18.0.0 S0/0/0 0

172.17.0.0 S0/0/0 1 172.17.0.0 Fa0/0 0 172.17.0.0 S0/0/0 1

172.18.0.0 S0/0/0 1 172.15.0.0 S0/0/0 1 172.16.0.0 S0/0/0 1

172.19.0.0 S0/0/0 2 172.19.0.0 S0/0/1 1 172.15.0.0 S0/0/0 2

Subnetting and Assigning Addresses

Figure 2. Addressing Design Scenario

You are the network administration for the small network in Figure 2. It consists of your headquarters location with a LAN with 60 hosts, remote office R1 with 10 hosts, and remote office R2 with 30 hosts. You have been assigned the address space 192.168.3.0/25. From this space you will need to create the subnets for each of the sites on your network and the two WAN links. Once you find the subnets assign addresses to the Routers interfaces and PCs using the following guidelines: Assign the first address from LAN subnets to the router interface connected to that LAN. Assign the second IP address in the LAN subnet to the PC on the LAN. Assign the first Address from WAN subnets to the HQ router end of the WAN link and the second address to the remote router interface. Use the steps below to help you work through it.

Create the subnets:

Address space: 192.168.3.0/25

Write it out in binary form identifying the host and network then use the space below in table as a scratch pad to help you in subnetting as needed. Remember to be efficient you usually want to start by creating the largest subnet you need first and then continue subnetting to find the smaller subnets in succession.

The following scratchpad can be used to show work (for partial credit) in completing the subnet table below.

Network bits Host bits

11111111.11111111.11111111.11 000000

11111111.11111111.11111111.1111 0000

11111111.11111111.11111111.111 00000

11111111.11111111.11111111.111111 00

11111111.11111111.11111111.111111 00

Subnet Table

Question Answer

23 What is the HQ subnet (address/mask)? 192.168.3.0 255.255.255.192

24 What is the R1 subnet (address/mask)? 192.168.3.96 255.255.255.240

25 What is the R2 subnet (address/mask)? 192.168.3.64 255.255.255.224

26 What is the subnet for the HQ to R1 WAN (address/mask)? 192.168.3.112 255.255.255.252

27 What is the subnet for the HQ to R2 WAN (address/mask)? 192.168.3.116 255.255.255.252

Fill in the address and subnet mask for the device interfaces in the table below using the assignment rules described above.

Device Interface Address Mask

HQ Router Fa0/0 28 192.168.3.1 39 255.255.255.192

S0/0/0 29 192.168.3.113 40 255.255.255.252

S0/0/1 30 192.168.3.117 41 255.255.255.252

R1 Router Fa0/0 31 192.168.3.97 42 255.255.255.240

S0/0/0 33 192.168.3.118 43 255.255.255.252

R2 Router Fa0/1 34 192.168.3.65 44 255.255.255.224

S0/0/0 35 192.168.3.114 45 255.255.255.252

PC1 Ethernet 36 192.168.3.2 255.255.255.192

PC2 Ethernet 37 192.168.3.66 255.255.255.240

PC5 Ethernet 38 192.168.3.98 255.255.255.224

What subnets do you have left available for future use?

46. 192.168.3.120

47. 192.168.3.124

PC’s on a LAN need to have a default gateway configured that identifies the next hop IP address for packets leaving the network. This is the address of the router interface on the LAN. Based on this what address will be assigned as the default gateway on the following PCs.

48. PC1 = 192.168.3.1

49. PC2 = 192.168.3.97

50. PC5 = 192.168.3.65 

NETW-204 Assignment #3

Week 5

Refering to figure 1 below: You are the network administrator for the network depicted in the diagram. You have been assigned the address space 10.1.16.0/21 to create the LANs you need, and the 172.16.1.0/28 space for your WAN links.

LAN: 10.1.16.0/21 WAN: 172.16.1.0/28

LAN Subnets

Begin by creating and assigning the LAN subnets you will use. In order to make the most efficient use of your address space you should start by creating the subnet needed for the LAN with the most hosts and then work you down to the smallest LAN.

Using the address space 10.1.16.0/21, create subnets for the LANs shown in the diagram and fill in the table 1 below. Notice that the first 7 subnets are all basically the same size and all subnets are all factors of 2 (remember 2n-2 where n is the number of host bits tells you the subnet size). Also remember for the most efficient addressing you should use the smallest size subnet that provides you the needed number of hosts.

TABLE 1: (Questions 1-8)

Question LAN Subnet Address Subnet Mask

1. R1 LAN S3 10.1.16.0 255.255.255.0

2. R1 LAN S4 10.1.17.0 255.255.255.0

3. R2 LAN S5 10.1.18.0 255.255.255.0

4. R2 LAN S6 10.1.19.0 255.255.255.0

5. R3 LAN S7 10.1.20.0 255.255.255.0

6. R3 LAN S8 10.1.21.0 255.255.255.0

7. HQ LAN S1 10.1.22.0 255.255.255.0

8. HQ LAN S2 10.1.23.0 255.255.255.128

WAN Subnets

For the WAN links, you have been assigned the 172.16.1.0/28 address space. Fill in the subnets in Table 2 below by subnetting the assigned WAN space.

TABLE 2: (Questions 9-11)

Question WAN Subnet Address Subnet Mask

9. HQ-R1 172.16.1.0 255.255.255.252

10. HQ-R2 172.16.1.4 255.255.255.252

11. HQ-R3 172.16.1.8 255.255.255.252

Assign addresses

Use Table 3 below to document the IP addresses for the indicated interfaces following the guidelines below:

1. Assign the first IP address for all LANs to the router interface.

2. Assign HQ the first IP address for all WAN links to Branch routers.

Table 3: (Questions 13-27)

Device Interface Address Mask

13 HQ Router Fa0/0 10.1.22.1 255.255.255.0

14 Fa0/1 10.1.23.1 255.255.255.128

15 S0/0/0 172.16.1.1 255.255.255.252

16 S0/1/0 172.16.1.9 255.255.255.252

17 S0/0/1 172.16.1.5 255.255.255.252

18 R1 Router Fa0/0 10.1.16.1 255.255.255.0

19 Fa0/1 10.1.17.1 255.255.255.0

20 Bonus n/a n/a n/a

21 S0/0/0 172.16.1.2 255.255.255.252

22 R2 Router Fa0/0 10.1.18.1 255.255.255.0

23 Fa0/1 10.1.19.1 255.255.255.0

24 S0/0/0 172.16.1.6 255.255.255.252

25 R3 Router Fa0/0 10.1.20.1 255.255.255.0

26 Fa0/1 10.1.21.1 255.255.255.0

27 S0/0/0 172.16.1.10 255.255.255.252

EIGRP Metric Calculation

List the values used in the EIGRP composite metric to calculate the preferred path (4):

28 Bandwidth

29 Delay

30 Reliability

31 Load

Routing concepts

Question Answer

32 What is the default formula for the EIGRP composite metric? Metric = [K1*bandwidth + K3*delay]

33 What command can be used to view the current K value being used by EIGRP? Show ip protocols

34 What command can be used to see the actual values of the EIGRP metric? Show interface

35 The _____________ metric is displayed in Kbps? Bandwidth

36 The default value used by most serial interfaces is based on T1 connections and is______________bps? 1,544,000

37 The measure of the probability a link will fail based on its history (downtime, errors) is referred to as

____________ and is measured with a value between 0 and 255. Reliability

38 ____________represents the amount of traffic using the link with a value between 0 and 255. Load

39 What is the main difference between a parent route and an ultimate route? Parent routes do not contain next hop IP address or exit interface information and Ultimates routes do.

40 What is the relationship between parent and child routes? Parent routes hold the subnet of the child routes.

41 Provide a brief description of a level 1 route: They can function as default routes, supernet routes, and network routes. They also have a subnet mask equal to or less than the classful mask of the network address.

42 What are the types of level one routes? Ultimate route

DUAL Concepts

List at least 3 advantages that DUAL offers:

43 Loop-free paths

44 Backup paths to every destination network

45 Fast convergence

Dual Concept Definition

46 Successor the neighbor with the lowest metric to the network

47 Feasible distance (FD) Is the metric to a network advertised by the connected neighbor plus the cost of reaching the neighbor

48 Feasible successor a router that has a least cost path to a network and does not form a loop

49 Feasibility condition (FC) Met when a neighbor’s RD is less than the local router’s FD to the same destination network

50 Reported Distance The total metric along a path to a destination network as advertised by an upstream neighbor

Instructor Explanation:

Points Received:

Comments:

Instructor Explanation:

Points Received:

Comments:

* Times are displayed in (GMT­07:00) Mountain Time (US & Canada) 

3. Question :

(TCO 5) Which of the following is the preferred route in the route lookup

process?

* Times are displayed in (GMT­07:00) Mountain Time (US & Canada) 

3. Question :

(TCO 6) Which command displays the amount of time since the router has heard from an EIGRP neighbor?

* Times are displayed in (GMT­07:00) Mountain Time (US & Canada)