[CentOS] Forcing ifcfg-eth0 to use the same nic in multi nic machine
Les Mikesell
lesmikesell at gmail.com
Wed Aug 15 12:55:41 UTC 2007
Lanny Marcus wrote:
> On 13 August 2007, Johnny Hughes <johnny at centos.org> wrote:
> <snip>
>> How can 2 nics from different companies have the same mac address ....
>> I don't think that is possible.
>> each card needs a separate MAC address, at least the way I understand
>> networking.
>
> I agree with Doug and Johnny. My belief is that every NIC in the world
> is supposed to have a unique MAC address.
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.
> Although the OP has been using
> these boards without problems, I suspect there is a defect on the
> boards.
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.
--
Les Mikesell
lesmikesell at gmail.com
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