[ntp:questions] Very rapid polling

David Malone dwmalone at maths.tcd.ie
Sat Feb 21 12:54:48 UTC 2009


David Woolley <david at ex.djwhome.demon.co.uk.invalid> writes:

>Uwe Klein wrote:

>> The hardware does automatic resend on collision using an
>> exponential+random backoff algorithm.

>Properly functioning ethernet has minimum packet lengths that guarantee 
>that it one receiver sees a collision, all of them see the collision. 
>Therefore collisions should never result in duplicate packets at the 
>application layer.

(Though this is possible, but rare, on 802.11 if the packet
transmission is successful, but the MAC layer ACK is corrupted.)

	David.




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