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# CS610 Assignment No 02 Solution & Discussion Due Date: Dec 02, 2016

CS610 Assignment No 02 Solution & Discussion Due Date: Dec 02, 2016

CS610 - Computer Network Assignment No. 2 Solution Fall 2016 Due Date: Dec 02, 2016

Assignment No. 02
Semester: Fall 2016

CS610 –Computer Networks

Total Marks: 20

Due Date: 02-12-2016

Assignment Objective:

• To know about Packet Switching which are used for routing
• To know about how routing tables are formed
• To know about how next hops can be calculated.

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Assignment

Problem Statement:

Consider the following graph showing switches as nodes with edges.

a)      Give the routing table for all 4 switches containing information of destination and next hop.   [Marks: 10]

b)      Give routing table with default routes for the above scenario.                                                     [Marks: 10]

Sample Tables:

 Node 1 Node2 Node3 Node4 Destination Next Hop Destination Next Hop Destination Next Hop Destination Next Hop

Default Routes:

 Node 1 Node2 Node3 Node4 Destination Next Hop Destination Next Hop Destination Next Hop Destination Next Hop

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### Replies to This Discussion

Our main purpose here discussion not just Solution

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&

It is in Lecture No.16

Dear Students Don’t wait for solution post your problems here and discuss ... after discussion a perfect solution will come in a result. So, Start it now, replies here give your comments according to your knowledge and understandings....

Solution-1:

Route Table:

 Node 1 Node2 Node3 Node4 Destination Next Hop Destination Next Hop Destination Next Hop Destination Next Hop 1 - 1 (2,1) 1 (3,1) 1 (4,3) 2 (1,2) 2 - 2 (3,1) 2 (4,3) 3 (1,3) 3 (2,1) 3 - 3 (4,3) 4 (1,3) 4 (2,1) 4 (3,4) 4 -

Solution-2:

Default Table:

 Node 1 Node2 Node3 Node4 Destination Next Hop Destination Next Hop Destination Next Hop Destination Next Hop 1 - 2 - 3 - 4 - 2 (1,2) * (2,1) 4 (3,4) * (4,3) * (1,3) * (3,1)

Hey chk it... is this corrct r not>>

Attachments:

Route table mein NODE 2 Destination 4 mein i think (1,3) aye ga

No she is right .... (2,1 ) hi aye ga (1,3) ni

i have submitted my assignment .... you can solve this assignment easily by taking lecture 16.

(1,3) aye ga qk 1 tu direct 3 say attach hai

ni pari... hm node 2 ko dekh re hn.. beshhk 1 n 3 se r 3 4 se attach hn.. bt link hm ne 2 ka chk krna ha, wo 1 k sth ho ra ha  r phr 3 k sth.. r phr 3  4 k sth

so node 2 k destination 4 k liye hm (2,1) kren ge. bcz 2 one k sth link kr ra ha r 1 3 k n 3  4 k sth.

is this solution is correct.......????

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