[Udpcast] Bandwidth issue with Net Express bonded nics in Windows

Alain Knaff alain at knaff.lu
Wed Dec 24 07:29:28 CET 2008


[STD]Ein wrote:
> Using the latest udpcast (udpwindows port, I cannot obtain more than 15.2mbit/s 
> when using a net express bonded nic as the receiver.  This virtual nic has no 
> problems obtaining 90mbit/s with smb or ftp (the ‘bonding’ is mac based outbound 
> only and works as passthrough for individual clients), so it’s not expressly 
> (pardon the pun) an issue with that.  Testing with other machines with normal 
> nics (on the same switch with no changes in topology) I’m getting 45+
> 
>  
> 
> The physical nics are d-link dfe530tx rev c cards.
> 
>  
> 
> There’s no error messages (no resends at all).
> 
>  
> 
> Any ideas? (other than ditching the nic express of course :p )

Well, ditching Windows comes to mind... :-)
Indeed, windows is often unreliable/unpredictable in these subtle 
performance aspects, and provides few (if any) diagnostic info.

Alain




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