Network Management

Computer Networks and Security
Network Management
Assignment
ASSIGNMENT TITLE NETWORK ANALYSIS PRACTICAL
PARAMETERS
Hand in date for this assignment is 5th April 2015 closing at 16.00hrs.

Work submitted must be your own unless the appropriate references are quoted within the text. Particular attention is drawn to the unfair means regulations which you have access to.
Students who fail to submit assessments by the specified date (without an extension being granted or without accepted Mitigating Circumstances) will be subject to the following penalties: See Faculty Handbook for details:
Please note that it is your responsibility to ensure that the assignment is submitted in the format/s specified in the Module Guide or on the Assessment Brief. Submit your assignment work via the Turnitin system.

DELIVERABLES
This part of the practical involves the writing up and processing of results obtained in Laboratory Sessions done in the first 2-6 weeks of the course.
IMPORTANT: Listen for any information regarding IP addresses, the Lab test network may vary from week to week.
Section A)
1) Explain in a detailed report why SNMP has become so popular in certain areas of management, and not so prevalent in other areas of communications.
Section B)
1) You have used various SNMP commands such as: snmpget and snmpwalk.
Document all the snmp commands available and specify which version is required to use them.

2) You will be given a main target host to assess using SNMP, there may be other devices to monitor/discover :

a) How many network interfaces does the main target host have?
b) How many datagrams/packets (IP and ICMP) that have been received?
c) How many ping messages have been received by the target host?
d) Are there any network devices connected to this switch, if so give details of the network interfaces of the connected device?
e) How long has this SNMP agent been running?
f) How many datagrams have been sent by the target host?
g) Which ports of the host are currently active?
h) How many segments that have been received by the target host?
i) How many SNMP Get-Request PDUs have been accepted and processed
by the 3COM switch?
j) Which ports are not available for traffic?
k) What is the CPU utilization of the router attached to the main target host?

3. Describe briefly the parts of the router and/or switch MIBs that have been used in your analysis throughout this assessment work.

4. If you wanted to monitor a port over a period of time that you suspected was intermittently dropping out, how would you do it? Show using a single SNMP command how this port could be achieved; give a full description of the command/commands and technique used.
5. During the laboratory session determine which ports on the target device were operational, and whether non-operational ports were non-operational because they were disconnected or because they had been configured that way by the network manager. You should indicate the answers to these questions and back them up with a summary of the output you collected from the MIB.
6. During the laboratory session you should capture at least two sets of data from the specified device. On each active port you should note the time between sets of data or include some measure of real time (e.g. sysUpTime) in your data capture. YOU MUST WORK OUT THE DIFFERENCE BETWEEN THE TWO SETS OF DATA FOR EACH ACTIVE PORT MIB ENTRY which will effectively exclude data prior to the laboratory session.
You should then submit a table showing the percentage of packets in each of the bands
• 64 Octets
• 65-127 Octets
• 128-255 Octets
• 256-511 Octets
• 512-1023 Octets
• 1024-1518 Octets
for EACH of the ports carrying traffic on the target device.
For EACH OF THESE PORTS draw the percentage of packets in each of the bands on a graph with percentage on the vertical axis and octet range on the horizontal axis, ONE GRAPH PER PORT.
Provide a composite graph of the busiest port using any application of your choice.
Provide a brief description of how you obtained the results and draw a diagram of the RMON MIB under 16.1.1.1 in your report highlight the areas that you used in your analysis.
7. You should find that at least one of the ports on the target device has a reasonably stable network load. In the laboratory session you should have used SNMP to find out which port or ports they were.
You can use the saved data from this capture to calculate what the load was in bits per second throughput. Perform the calculation and include both calculation and answer in your report then work out the Utilisation for the network segment attached to that port using the formula shown under the description of the OID 1.3.6.1.2.1.16.1.1.1.4 etherStatsOctets in the RMON MIB definition shown below.
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