[SunHELP] MACS and Servers with more than one network card on same network

[Pissey, Vinod]

Hi Foong

The MAC address is unique for a given network card.You can still change the
MAC address of a network card in a SUN machine using the mkp command at the
OK prompt.But once you change the MAC address you need to keep the machine
in the private network and not make it public as it may clash with the other
machine having the same MAC address .

The syntax goes something like this
ok> f idprom at 1 f xor mkp
ok>8 0 20 x1 x2 x3 x1x2x3 mkpl
press cntrl+d and cntrl+r
x1x2x3 are the new ethernet address.

But can't remember the exact syntax.Can someone throw some light on this.


Thanks
Regards
Vinod Kumar Pissey
Compaq Computers
14231 Tandem Blvd
Phone:512-4328761.
Unix Is User-Friendly.It's just selective about who its friends Are.


Message: 2
From: "Foong, Tzeweng" <Tzeweng.Foong at team.telstra.com>
To: sunhelp at sunhelp.org
Date: Fri, 6 Apr 2001 16:08:15 +1000 
Subject: [SunHELP] MACs and Servers with more than one network card on same
network!
Reply-To: sunhelp at sunhelp.org

Hi All,

I have been told that the MAC address on network cards are the same 
for sun sparc machines !!  They somehow (How?) get their MAC address 
synchronised (provided by) on the motherboard. 

Therefore how would it be posible to have 2 network cards on the same 
network?? 

I understand that the MAC address can somehow (How? anyone know?) 
be changed to another address so that the 2 network cards can be 
put on the same network. Also what would you change the Mac 
address to? I thought that these addresses are in some fixed sequence 
so that any 2 cards would not have the same MAC. But some how Sparc
architecture makes any network cards on the same machine the same.!!

Please explain...

Thanks in advance!!

Tze Weng Foong