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darkrising

Packet Duplications - Potential bug?

Question

Hello, I've been experimenting with different switch setups between 2 computers.

 

For some reason, if the wire and switch is going one way I get packet duplications but if the wire is setup a different way I don't.

 

Here's some screenshots to explain what I mean:

 

Setup 1

NoTpfzH.png

YOSn27w.png

 

Setup 2

SIUyeDW.png

yKoG5T9.png

 

 

As you can see the 2nd setup has packet duplication where as the first does not...

 

This is quite strange and I'm not really sure why this is happening.

programs.zip

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I think the problem might be in example 2 where the monitor is connected through the switch and a network cable from the same computer as said monitor is also connected to the switch. All component blocks act as network cable with the exception being power distributors, server racks on the internal setting, and 1 more thing I'm probably forgetting..

Let me know if I could be clearer.. :) 

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This is by design - switches just brainlessly bounce messages (a certain number times, the packets' TTL). The switch under the screen forms a cycle (with the face touching the screen and the face touching the cable that also connects to the subnetwork the screen is in). Just make sure to avoid cycles :)

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I think the problem might be in example 2 where the monitor is connected through the switch and a network cable from the same computer as said monitor is also connected to the switch. All component blocks act as network cable with the exception being power distributors, server racks on the internal setting, and 1 more thing I'm probably forgetting..

Let me know if I could be clearer.. :)

 

I understand :P

 

This is by design - switches just brainlessly bounce messages (a certain number times, the packets' TTL). The switch under the screen forms a cycle (with the face touching the screen and the face touching the cable that also connects to the subnetwork the screen is in). Just make sure to avoid cycles :)

 

Ah okay, that's cool, least it isn't a bug. I'll just have to design my network code with packet filtering like the 2 programs I attached. :)

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