> Date: Tue, 3 Mar 2009 08:42:16 +0200 > From: Saku Ytti <saku+na...@ytti.fi> > > On (2009-03-02 17:31 -0800), Kevin Oberman wrote: > > > > > > http://standards.ieee.org/regauth/oui/oui.txt > > > > > 02-07-01 (hex) RACAL-DATACOM > > > > Would be interesting to see what are the historical reasons.Perhaps they > > > simply > > > predate the scheme or some might not even co-exist in ethernet network to > > > begin > > > with, in which case they might be better documented elsewhere. > > > > IEEE after 802.3 was ratified. IEEE agreed to retain existing > > registrations and they have remained there. > > So where does this leave the current local scape addresses being globally > assigned? Is it possible that we will run into legit 02 MAC addresses > in the wild?
Thee are properly "locally assigned",not "local scope" addresses, but the effect is the same. This is only a problem if you have multiple systems running DECnet (or some other protocol using this) with the same layer 3 address. That should never happen, so there should be no duplication. The only real issue I see is with IPv6 EUI-64 addresses and even in that case, there would have to be two systems getting their address space from the same router interface before there is a conflict. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: ober...@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
