CS-414: Data Centre Administration

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24 Οκτ 2013 (πριν από 3 χρόνια και 11 μήνες)

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CS
-
4
14
:
Data Centre Administration

(Course Materials can be found in:
www.mmenacer.info
)



Lab Sheet
5
:
Subnetwork, Classes, IP address
ing
, Subnet mask



For this week, the lab will
cover
how s
ubnetwork
s

or subnets

are designed

using

Classes, IP
addressing,
and
Subnet mask
.


Before subnetting


1.

In any network (or subnet) we can not use all the IP addresses for host addresses.

2.

We lose two addresses for every network or subnet.

3.

Network Address:

One address is reserved
to that of the network

(
First IP address
)
.

4.

Broadcast Address:

One address is reserved to address all hosts in that network or subnet

(
Last IP
address
)
.


Internet Addresses













IP address Classes

















Example
:


IP address

Class

Netw
ork address

Broadcast address

64.210.30.189

172.110.220.34

192.168.100.10

A

B

C

64.0.0.0

172.110.0.0

192.168.100.0

64.255.255.255

172.110.255.255

192.168.100.255



Exercise 1:


IP address

Class

Default
Network
address

Broadcast address

1
64.
8
0.
130.
89




72.1
0.20.
7
4




222.18.160.105






Creating Subnetworks


To create a subnet address, a network administrator borrows bits from the original host portion and
designates them as the subnet field.


















Subnet Mask












Network design us
ing subnets























































Exercise
2
:


Design a network diagram, using Packet tracer, with 4 subnets. Fill in the
Network design
table below
before configuring the network devices:



1 routers, 2 switches, 1 hubs,

1 servers and 1 printers in each subnet, and 1
6

PCs.



Use the main network address:
192.168.
1
.0
.


Network Design
Table

Network
IP address
:

192.168.1.0

Class
:


Default Network Mask
:


Network
Broadcast
IP
address
:


Subnet Mask
:


Subnet 1 IP address:


Subnet 1 Broadcast address:


Subnet 1 Range of IP addresses:


Subnet 2 IP address:


Subnet 2 Broadcast address:


Subnet 2 Range of IP addresses:


Subnet 3 IP address:


Subnet 3 Broadcast address:


Subnet 3 Range of IP addresses:


Subnet 4 IP addre
ss:


Subnet 4 Broadcast address:


Subnet 4 Range of IP addresses:



Finally, use the simulation and realtime modes to test your network design.


Practice Exercise:



Design, draw

and configure

a network
with
8

subnets

(fill in the Network design table)

using
:



2

routers,
3

switches,
3

hubs, 2 servers and 2 printers in each subnet, and 12 PCs.




Use the main network address
:

64
.
0
.0.0
.



Use the simulation
mode

by sending some messages
at the same time
between PCs
, and notice
how messages collide if the networ
k is not segmented using switches and routers
.



Determine the number of collision and broadcast domains.



Write down all the details of this network design (network address, subnet mask, subnet
addresses, address range of each subnet, Network broadcast addr
ess, broadcast address in each
subnet).



Save your design as “lab
5
diagram
1
.pkt
”, in your flash memory for future use.





Students should review these tutorials

and practice at home to be able to get a good
understanding and use of Packet Tracer software.
T
his will be a
big

help in understanding this
course and the notions of Networking as a whole.