On Sat, 2015-02-28 at 23:47 +0300, Sergey P. Semernin wrote: > Hello Ben, > > Thank you for the reply! > > > If the switch is stripping the VLAN tag from a minimum-length frame and > > failing to add an extra 4 bytes of padding, that is a bug in the switch. > > We will not patch e1000e or any other driver to work around that. > > I wrote initial message as information about problems with Intel 82574L and > DGS-1105 co-operation. Just, it's frequently used devices. Also, I don't > found > any solution in the Internet. Nothing else. Maybe include this workaround to > any how-to, or special "workarounds guide"... > > Minimum frame length is 64 bytes. The switch removing VLAN tag, and then > check > remain part as ordinal Ethernet frame, and dropping 60-bytes frame as > invalid. > I can't change the switch logic, but can make workaround.
It will be far less painful to replace the switch. You might be able to return it, as it was presumably advertised as IEEE 802.1q compliant but it is not. > Maybe I chose the wrong mailing list. Well I don't think you're going to get any changes made in the kernel, but at least you have confirmation that the switch is defective. Ben. -- Ben Hutchings friends: People who know you well, but like you anyway.
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