This presentation helps the beginners understand the network monitoring system.

2. Introduction
 Computer Networks play an increasingly
important role in today’s technological
age
 But before the transfer of any
information between the computers it is
essential to know if this transfer can
actually take place
 For this, it is important to check if the
computers ready for data transfer are up
in the network or not

3. Network connection
diagram

4. Fundamentals of Network
Monitoring
 The purpose of network monitoring is the
collecting of useful information from various
parts of the network so that the network can
be managed and controlled using the collected
information
 Network monitoring techniques are developed
to allow network management applications to
check the states of their network devices
 As more and more network devices are used
to build bigger networks, network monitoring
techniques are expanded to monitoring
networks as a whole

5. Three basic goals of network
monitoring:
 Performance monitoring
 Fault monitoring
 Account monitoring

6. A list of network indicators
 Circuit Availability: The actual time that a
user can dial up to a network and the
network connection is available for the user
 Node Availability: The actual time that a
user can use network nodes, multiplexers
and routers without having error
 Blocking Factor: The number of user
who cannot access the network because of
busy signal in theory
 Response Time: The time to transmit a
signal and receive a response for the
signal

7. Ideal network monitoring
system
 Integration
 Productivity
 Efficiency

8. Sources of data
 Measurement of metrics
 This refers to the method of obtaining
network data by measuring certain metrics
regarding Network performance
 An example might be the measurement of
packet round trip times and packet loss

10. Basic terminology
 LAN: Ex – inside school, office building
 MAN: Ex - telephone lines
 WAN: Ex – within a town or city
 Network switch
 Router
 Port number
 IP address

11. Network monitoring tools
 Ping

12. Network monitoring tools
 Trace Route

13. Network monitoring tools
 Switch port mapper

15. Introduction to ping
 What is PING?
 How does ping helps?
 Why should we use ping?

16. Using the ping command
 Syntax: xxx: xxx: xxx: xxx
 To check connectivity by using the ping
command, at the command prompt, type
ping and the IP address you want to
reach

17. Example of ping
 The following example illustrates how to send
two pings, each 1,450 bytes in size, to IP
address 10.3.1.131:
 C:>ping 10.3.1.131 -t
Pinging 10.3.1.131 with 1450 bytes of data:
Reply from 10.3.1.131: bytes=1450 time<10ms TTL=32
Reply from 10.3.1.131: bytes=1450 time<10ms TTL=32
Ping statistics for 10.3.1.131:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate roundtrip times in milliseconds:
Minimum = 0ms, Maximum = 10ms, Average = 2ms

18. Conclusion
 Network Monitoring System is the system
which monitors the system which is connected
in LAN. In case our server, networks are
crashed due to overload of other devices.
 It is easy to understand for user that if color
changes to Green it means that the system is
up in a network, if color changes to Red then it
means that system is down in a network
 For justifying the system is present or not in
network there are some tools of network
monitoring system like PING, Trace route,
switch port mapper

19. Reference
 Books
 Computer Networking by author James
Kurose and Keith Ross
 Computer network and interface by author
Furrosion
 Links
 www.wikipedia.org
 http://www.devdaily.com/java/java-ping-class