Data Communication
IMPORTANT HINTS
DATA COMMUNICATION ASSIGNMNET
HQ is given in size so not much you can do about it. You could put in a few subnets in HQ but this would give extra work. You could mention this in your report. :) It shows network planning.
Dear all,
Due to different values associated with the last 3 digits of different Students' ID, an “AND” operation between given IP address and a selected mask may produce a network ID which appears different from the one appears in given IP address.
For example, with XYZ= 559, the IP address given is 191.2.55.0/mask (any number between 17-21, CIDR notation). Suppose IP address = 191.2.55.0/[I choose 20]
For HQ with 559 devices, I should leave 10 bits in the host part, so the subnet mask would be “/22”.An “AND” operation between the given IP address (191.2.55.0) and the mask (/22) generates network address 191.2.52.0/22, which is different from 191.2.55.0/22
If I follow the same procedure and calculate the network ID with XYZ= 529 and the same mask “/22”, I get network ID 191.2.52.0/22 which remains the same XY values. Therefore without “AND” operation, we are not able to identify what would be the network ID for each proposed sub network.
With your XYZ values, if you find network ID different from the given one (with XY values chosen), you can follow either of the following options:
1. Replace XY with any values that preserve the same value in network ID
or
2. Start your VLSM based on the calculated network address.
If you ARE required to do this, please highlight this in your report to help a marker understand the issues with the XYZ values.
If you need any further clarification, please do not hesitate to talk to your tutor or me.
Hi all,
In your assignment, we assume that the organisation have the B class ( 191.2.0.0) from an ISP and then you are given 191.2.XY.0 IP (already submitted) by a higher level network manager of your organisation to complete this task.
We need to clarify this with a subnet mask with the provided IP address, so it should be read as
191.2.XY.0/subnet mask ( you can choose any number between 17-21)
With this, we still have at least 11 bits available to play with for our need. As per our need for each branch, it should not have any implication on the IP range availability
I find the link interesting and useful for Ass2. Please note you have /56 rather than /48 because /48 are usually assigned to ISP.
We would suggest this video https://www.youtube.com/watch?v=Ct4PU6CyvTQ
Big tip - look at 20 minutes into the video and look at your Assignment 2. The circle approach is the best way to understand this type of network problem but not many Youtube examples show this approach. So look to see if the same then work backwards. Theory practical in one video. Please also explore "More Resources" folder" for other helpful information, particular one is "Peter Packet - subnet"
You can use the attached template (with appropriate modifications) for your assignment 2 report.
Suggested Report Template Assg 2_2018 S3.docx
Please also have a look at the link for more info re report writng
https://learn.scu.edu.au/bbcswebdav/orgs/SERT-SCU/resources/report-writing.html