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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: News of ISC Developing BIND Patch
"Dominic J. Eidson" wrote: > > On Thu, 18 Sep 2003, John Kristoff wrote: > > > Fortunately, this practice rarely occurs these days (token ring / SNA > > shops often did this) although I'd be curious if anyone still does it. > > box:~ # /sbin/lspci | grep 'Happy' > 01:03.1 Ethernet controller: Sun Microsystems Computer Corp. Happy Meal > (rev 01) > box:~ # /sbin/ifconfig | grep 'eth' > eth0 Link encap:Ethernet HWaddr DE:AD:BE:EF:00:B0 > eth1 Link encap:Ethernet HWaddr DE:AD:BE:EF:00:B1 > eth2 Link encap:Ethernet HWaddr DE:AD:BE:EF:00:B2 > eth3 Link encap:Ethernet HWaddr DE:AD:BE:EF:00:B3 > > It didn't come with it's own MAC address pre-programmed... Sun, by default, loads their manufacturer ID as the first three bytes and uses the system ID (burned into the *mumble-mumble* chip on the motherboard) in the last three. Since the sysID is unique this guarantees global uniqueness. This also means, by default, all NICs in a Sun have the same MAC. This is considered a feature. There is a knob in the EEPROM, 'local-mac-address?', that will use the MAC address(es) burned into the card rather than the sysID. However, for a NIC integrated into the motherboard, like an hme, there is no "local" MAC, just the sysID. -- Crist J. Clark [email protected] Globalstar Communications (408) 933-4387
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