VLAN trunking and fragmentation

Pyun YongHyeon pyunyh at gmail.com
Fri Mar 14 05:28:22 PDT 2008


On Fri, Mar 14, 2008 at 01:14:40PM +0100, Giulio Ferro wrote:
 > Giulio Ferro wrote:
 > >That's it!
 > >Now seems to work properly, the problem then is with hardware tagging.
 > >
 > >My question now is: can I use vlans without htag in a complex system with
 > >heavy traffic without a significant performance loss? If not, how much 
 > >will it
 > >take to fix the issue with the driver?
 > >
 > 
 > 
 > There's seems to be another problem now.
 > 
 > If I send flood pings to the other host with big packets (say 2000 
 > bytes) it works, but one
 > packet out of 4 or 5 takes a huge time to round-trip (about 1000ms), 
 > whereas the rest
 > of the packets have a reasonable 0.2 ms average...
 > 
 > 
 > I fear this may lead to unacceptable performance for real-time protocols 
 > (ie voip) in a
 > production environment.
 > 
 > Do you think the problem is localized in the "re" driver? If so I could 

Yes.

 > just change the
 > network interface and be done with that. (In production I can use bge 
 > cards).
 > 
 > 
 > Thanks again.

-- 
Regards,
Pyun YongHyeon


More information about the freebsd-net mailing list