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What is fragment free switching?

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Anonymous

13y ago
Updated: 5/12/2023

Fragment free is a variation on cut-through switching that partially addresses this problem by assuring that collision fragments are not forwarded. This will hold the frame until the first 64 bytes are read from the source to detect a collision before forwarding.

This is only useful if there is a chance of a collision on the source port. Fragment-free switching is also known as runtless switching and is a hybrid of cut-through and store-and-forward switching. Fragment-free switching was developed to solve the late-collision problem.

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Akeem Hills

Lvl 10
2y ago

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Related Questions

What is fragment-free switching?

Fragment free is a variation on cut-through switching that partially addresses this problem by assuring that collision fragments are not forwarded. This will hold the frame until the first 64 bytes are read from the source to detect a collision before forwarding.This is only useful if there is a chance of a collision on the source port. Fragment-free switching is also known as runtless switching and is a hybrid of cut-through and store-and-forward switching. Fragment-free switching was developed to solve the late-collision problem.


Why is fragment-free somewhere between cut-through and store-and-forward in terms of speed and error detection?

Fragment-free switches read more than just the destination MAC address before switching to the out port; that makes them slower than cut-through switches. Because they read more of the frame, however, they catch more errors than cut-through switches. They don't read the entire frame, so fragment-free switches are faster than store-and-forward switches. For this same reason, they don't catch as many errors as store-and-forward switches


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