Hello Ben, I am using the latest driver download from the Intel website (i.e. 'igb-3.0.22.tar.gz'). Using wireshark, I don't see any MTU size packets and most are less than 500 bytes.
Thanks, Greg -- Greg Hupf [email protected] Command and Control Technologies www.cctcorp.com 1425 Chaffee Drive, Suite 1 (321) 264-1193 x121 Titusville, Florida 32780 (321) 383-5096 fax On 6/24/2011 7:17 PM, Ben Greear wrote: > On 06/24/2011 04:05 PM, Greg Hupf wrote: >> Hello John, >> >> Thanks for the reply. The device ID is 'E1G44ETBLK' (i.e. Intel Gigabit >> ET Quad Port Server Adapter E1G44ET with the 82576 controller). We are >> also having the same problem with the Intel adapters located on the >> motherboard (with the 82575EB controller). >> >> All the packets are received correctly in promiscuous mode. But without >> promiscuous mode some of the PROFINET packets are dropped (e.g. packets >> from managed PROFINET switches are received correctly, but packets from >> PROFINET bus couplers are dropped). >> >> We only seem to have this problem with Intel NICs that use the '82575/6' >> controller and/or the 'igb' driver. We tried to do some investigation >> using wireshark. I can provide capture files if you think it would be >> helpful. Otherwise, I'll see if I can determine if it is the HW or the >> stack that is dropping/filtering the packets. Thanks for the help, I >> appreciate your cooperation. > > If you are using the igb driver in the Linux kernel, as opposed to one > you download from Intel's site, you might try this patch: > > http://patchwork.ozlabs.org/patch/82675/ > > I had to add this to my setup to get it to handle MTU sized VLAN packets > when no VLANs were configured on the NIC. > > I'm not sure if the out-of-tree driver has the same issue or not. > > Note that I do not work for Intel, nor do I know a great deal about > their NICs/drivers. > > Thanks, > Ben > ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
