Paul Jakma wrote: > On Wed, 17 Oct 2007, Paul Jakma wrote: > >> Firmware 'near' the NIC (I've never seen an explanation of the exact >> mechanism) interposes itself between hardware and OS and 'hijacks' >> traffic to that port. It never makes it to the OS. > > > Ah, googling suggests that when this "Not quite a NIC" has this > management-port-hijack feature enabled, that it would limit the NIC to > 100Mb/s mode (due to firmware implementation not supporting GigE > somehow). > > Is this performance limitation still present? > Not known to me on the latest Weybridge beta platform.
> Another question I would have: If the management-hijack is active and > the OS requests promiscious receive, does the OS get the > management-port traffic? I.e. I suspect this feature *must* either > break AMT or else network-observability through promiscious-mode > operation, is this the case? If not, I'd be curious as to how it's done. > No. Even in promiscuous mode the host OS does not receive AMT packets. Don't know how it's done. Vincent.
