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Network protocols for dummies (sopuli.xyz)

submitted 11 months ago by [email protected] to c/[email protected]

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[–] [email protected] 31 points 11 months ago (14 children)

You forgot to mention that you might get it twice, or thrice, or more, and in different versions.

[–] [email protected] 9 points 11 months ago (12 children)

(novice) Why would you get UDP packets multiple times? UDP doesn't check for acceptance I thought.

[–] [email protected] 21 points 11 months ago (10 children)

From StackOverflow:

Switches will send packets to all interfaces when using broadcasts or under extreme conditions (full MAC Address Table). This can lead to duplication if there is a loop between two or more switches and if the Spanning Tree Protocol is not used. So the answer is rarely.

https://stackoverflow.com/questions/9196791/duplicate-udp-packets-how-often-it-happens#9220574

[–] [email protected] 5 points 11 months ago (1 children)

Don’t the big internet-y routers also send packets to multiple interfaces if they don’t know how to correctly handle the target IP address?

[–] [email protected] 3 points 11 months ago (1 children)

You mean under MPLS?

[–] [email protected] 1 points 11 months ago

No clue. My college course wasn’t all that deep, and it’s been quite some time.

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