p5ad2 premium network issue

  • Thread starter Thread starter Hansz
  • Start date Start date
H

Hansz

hi,

my isp says that i have a driver problem with the onboard nics.
the isp says that the cable modem shows him a wrong mac address 00.00.00.00.00.00
when i check my mac address it is "normal" mac address.
the newest drivers are installed.
in the device manager everyhting is installed right (and according to the manual).
no problems here.
anyone farmilliar with this problem?
like to hear from you.

hans


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"Hansz" said:
hi,

my isp says that i have a driver problem with the onboard nics.
the isp says that the cable modem shows him a wrong mac
address 00.00.00.00.00.00
when i check my mac address it is "normal" mac address.
the newest drivers are installed.
in the device manager everyhting is installed right (and
according to the manual).
no problems here.
anyone farmilliar with this problem?
like to hear from you.

hans
Click to expand...

As I understand it, not all MAC addresses work (i.e. some of
the address values may be reserved). One Asus motherboard
(A7N8X) had problems with MAC address, and in that case, the
MAC address was screwed up by flashing the BIOS.

On the A7N8X, the MAC address assigned by Asus is printed on
a sticker on one of the IDE connectors. Since the P5AD2
motherboard manual doesn't have good pictures of the
motherboard, I don't know if the motherboard
has labels with this information on them or not.

This thread shows how to fix a MAC address problem on the
A7N8X. I expect this is not the problem in your case, so
this is just an example of how a MAC addressing problem can
be caused.

http://www.nforcershq.com/forum/viewtopic.php?t=21050

There is some info on MAC address here:

http://groups.google.ca/[email protected]

The leading three octets of the MAC address, indicate the
vendor of the network chip or hardware. There is a list
here for example. Check using the ipconfig /all command
from a DOS window, and see what it lists for MAC.

http://www.cavebear.com/CaveBear/Ethernet/vendor.html

I don't see an entry for Marvell in that list, and a search
in Google suggests the first three octets could be
00:11:2f . But so many games are played with the MAC address,
it is hard to tell if that is a valid assigned code or not.
(For example, on Asus motherboards with two separate Ethernet
chips, sometimes Asus assigns MAC addresses from the same
vendor block. AFAIK, the only real requirement is that the
MAC addresses not be reused, and each hardware device is
supposed to get a unique address.)

About the only other thing I can suggest, is connecting your
P5AD2 to another computer, and using a packet sniffer to
capture some packets. Then, examine the packet to see what
the source and dest 48 bit addresses are. Perhaps the problem
is not with your computer at all, if ipconfig /all is showing
a non-zero value for the MAC address.

HTH,
Paul
 
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