Jon Smirl wrote:
> First thing I need to figure out is why I can't finish a 250MB copy
> over pure 802.11g without dropping the connection. I am getting
> hundreds of these in the logs:
> kernel: usb 5-1.3: handle_retry_failed_int() retry failed interrupt

This interrupt occurs when the device failed to transmit a unicast 
frame. It retries several times (and gives us an interrupt for each 
retry) and then sends a final interrupt saying that it's given up. The 
definition of "failed to transmit" is "did not receive an ACK within a 
predefined timeframe".

It has nothing to do with software or protocol retry. Lowering the rate 
would be a sensible experiment.

> The nodes in my test are 5ft apart with 100% strength, 99% quality at
> 54M on a clear channel. I would hope that they can exchange packets
> without dropping them.

Pay little attention to the strength/quality values, they are very 


Take Surveys. Earn Cash. Influence the Future of IT
Join's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
Zd1211-devs mailing list -

Reply via email to