On 15 August 2007, Les Mikesell lesmikesell@gmail.com wrote: <snip>
Everyone believed that except DECnet which expected all cards in the same machine to have the same MAC. The address should be stored in a ROM and initialized at startup, so it is probably a firmware or driver bug.
Les: On multiport cards, do the NICs all have different MAC addresses and do they all use the same driver? The OP has a board where the 2 NICs use different drivers. Seems like DECnet did not have a better idea there.
<snip>
Yes, different block ranges are supposed to be assigned to different companies. But, it shouldn't hurt anything unless both are connected to the same subnet which you aren't likely to want.
That *would* be a problem, with routing to the proper box. Lanny
Lanny Marcus wrote:
On 15 August 2007, Les Mikesell lesmikesell@gmail.com wrote:
<snip> > Everyone believed that except DECnet which expected all cards in the > same machine to have the same MAC. The address should be stored in a > ROM and initialized at startup, so it is probably a firmware or driver > bug.
Les: On multiport cards, do the NICs all have different MAC addresses and do they all use the same driver? The OP has a board where the 2 NICs use different drivers. Seems like DECnet did not have a better idea there.
All NICs everywhere are supposed to have different MAC addresses. And I've never seen different ones on the same board need different drivers before except for fancy servers that have a built-in management interface that might be a 10/100 NIC while the main ones are 10/100/1000.
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Lanny Marcus -
Les Mikesell