joe@eng3.UUCP (Joe LaRocque) (07/24/90)
I have been given a 'chance to excell' by my boss. Simply put, how do we go about getting a base EtherNet Address assigned to us? I seem to recall that PARC is still in charge of these numbers. But, I know that they have moved to San Diego and I no longer have a name or telephone number for an individual that I can talk to about this request. Before I forget....I know that we could get a set of proms from a mfg who would take care of the problem for us. Our problem is that the new system we are building requires as few surface mount structures as possible, so we will be assigning the EtherNet Address via software. Thanks for your assist! Joe
oberman@rogue.llnl.gov (07/25/90)
In article <488@eng3.UUCP>, joe@eng3.UUCP (Joe LaRocque) writes: > I have been given a 'chance to excell' by my boss. Simply put, how do > we go about getting a base EtherNet Address assigned to us? I seem to > recall that PARC is still in charge of these numbers. But, I know that > they have moved to San Diego and I no longer have a name or telephone > number for an individual that I can talk to about this request. > > Before I forget....I know that we could get a set of proms from a mfg > who would take care of the problem for us. Our problem is that the new > system we are building requires as few surface mount structures as > possible, so we will be assigning the EtherNet Address via software. > I believe that the IEEE now hand out these numbers, although Xerox still does the actual work. But I am concerned with the idea that you are planning on putting out a device which gets it's Ethernet address from software. I don't have the Ethernet or 802.3 spec handy, but I believe that this is NOT legal. And, even if it is, it's dangerous. It is critical that all Ethernet devices have globally unique addresses. The hardware assignment of these ainsures that there can NEVER be two the same. The portion of the spec allowing software to reset this address is something I've always objected to, but it is there. R. Kevin Oberman Lawrence Livermore National Laboratory Internet: oberman@icdc.llnl.gov (415) 422-6955 Disclaimer: Don't take this too seriously. I just like to improve my typing and probably don't really know anything useful about anything.
montague@npdiss1.StPaul.NCR.COM (John Montague) (07/26/90)
In article <488@eng3.UUCP> joe@eng3.UUCPJoe LaRocque writes: >I have been given a 'chance to excell' by my boss. Simply put, how do >we go about getting a base EtherNet Address assigned to us? I seem to By this request I believe you mean "How does one obtain an assignment of a block of Universal LAN addresses?" These addresses are assigned by the IEEE Standards Office, 445 Hoes Lane, Piscataway, NJ 08854-4150; there is a nominal fee ($1000). >Before I forget....I know that we could get a set of proms from a mfg >who would take care of the problem for us. Our problem is that the new >system we are building requires as few surface mount structures as >possible, so we will be assigning the EtherNet Address via software. Universally administered addresses must be uniquely assigned to a single LAN node. This normally accomplished by making a permanent address assignment to a physical assembly in a non-volitile register (NOT battery backed-up RAM). If you wish to assign addresses through software you should use "locally administered addresses" which you may choose to be similar to the address you have permanaently assigned to the hardware, differing only in the "Address Administration" bit (the second most significant bit in the 48 bit address: 0= universally administered, 1= locally administered). Extreem care must be taken to ensure that duplicate addresses NEVER occur on the network. John Montague W0RUE Manager, Standards & Architecture NCR, Network Products Division, St. Paul, MN john.montague@stpaul.NCR.COM
kevinr@moe.Tandem.COM (Kevin J. Rowett) (07/26/90)
In article <146@npdiss1.StPaul.NCR.COM>, montague@npdiss1.StPaul.NCR.COM (John Montague) writes: |> |> Universally administered addresses must be uniquely assigned to a single Gosh the "I" in IEEE sure has grown. I = institue ( as in it ain't a std till I say so) I = International ( as in globally admin addresses) I = Interplanetary ( as in universal) Anyone got the MAC address of the HST? kevinr@tandem.com N6RCE