DETERMINE A CORRECT OR VALID VALUE FOR THE FOLLOWI

DETERMINE A CORRECT OR VALID VALUE FOR THE FOLLOWING FIELDS IN THE BASE HEADER

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Question 5– IPv6 Packets                                                                 (5 marks)

An IPv6 packet travelling within an Autonomous System, consists of a base header, extension headers, a TCP segment and data.   The data is 128,000 bytes long (jumbo payload).  The following diagram shows the packet:

 

Version

Traffic class

Flow label

Payload length

Next header

Hop limit

Source Address

Destination Address

Hop-by-hop exthdr

 

 

 

Source port address

Destination port address

Sequence number

Acknowledgement number

HLEN

Reserved

Control

Window size

Checksum

Urgent pointer

128000 bytes of data

               

 

Determine a correct or validvaluefor the following fields in the base header with a brief explanation of the value you selected.  Note: the brief explanation is half the marks.

  • Version;
  • Payload Length;
  • Next Header;
  • Hop limit:
  • Source Address and Destination Address.

Do not type your answers here: type it in the Answers Template provided.

 

Suggested sources of information:

Forouzan (textbook) chapter 27

TEMPLATE FOR YOUR ANSWERS

Type your answers in this section in the spaces provided

 

First Name:_________________________  Last Name:____________________________

Student ID: __________________________

 

Question Number

Mark

allocated

Mark earned

Question 1: (10 marks)

 

 

 

 

Routing table of router R2:

 

Mask

Network address

Next-hop address

Interface

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Routing table of router R3:

 

Mask

Network address

Next-hop address

Interface

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 (5 for each table)

 

Question 2: (6 marks)

 

 

a)

 

 

 

 

 

1

 

b)

Department

Subnet address

Last address

Mask

Marketing

 

 

 

Accounting

 

 

 

Head Office

 

 

 

Cust Services

 

 

 

4

 

c)

 

 

 

1

 

Question 3: (4 mark)

 

 

a)

 

 

 

 

 

2.5

 

b)

 

 

 

1

 

c)

 

 

 

.50

 

Question 4: (15 marks)

 

 

a)

 

 

 

 

2

 

b)

Major routing protocols etc (1.5 marks)

 

 

 

Why inter-domain/intra-domain protocols etc  (1.5 marks)

 

 

 

3

 

c)

 

 

 

 

 

5

 

d)

 

 

 

 

 

2.5

 

e)

 

 

 

 

 

 

2.5

 

Question 5: (5 marks)

 

 

 

Place a value, with brief explanation, for (read question 5):

Version:

Payload length:

Next header:

Hop limit:

Source Address:

Destination Address:

Note: source & destination address are worth 1 mark together

5 (for each value, .5 for valid value, .5 for explanation.

 

Total marks awarded

40 (max)

 

Less late penalties if applicable

 

 

Less plagiarism penalties if applicable

 

 

Total marks earned

 

 

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