home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!howland.reston.ans.net!spool.mu.edu!agate!ucbvax!WR-HITS.AF.MIL!ANDERSONH
- From: ANDERSONH@WR-HITS.AF.MIL ("Harry F. Anderson")
- Newsgroups: comp.os.vms
- Subject: (none)
- Message-ID: <9301121443.AA12731@unix.sri.com>
- Date: 12 Jan 93 14:32:00 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Distribution: world
- Organization: The Internet
- Lines: 42
-
- >> How can one find out the Ethernet address of a node ?
- >> It's VMS 5.5. I know you can do it with a little bit of code and that's
- >> straightforward but how can you do it with NCP, for instance ?
-
- >$ MC NCP SHOW NODE <node_name> CHARACTERISTICS
-
- This won't work, or at least grossly incomplete.
-
- Here is my answer, it might
- be more than requested but oh well.
- I hope I haven't wrote up anything wrong. :-)
-
- >How can one find out the Ethernet address of a node ?
-
- There are two ethernet addresses on a Vax running Decnet.
- 1. The actual hardware address , programed into a chip on the ethernet card,
- You can see the hardware address as follows:
-
- MC NCP
- NCP> show known line char
-
- this will show the address for each ethernet card.
- Notice all DEC cards will start with 08-00-2B , that is one of DECs
- assigned ethernet prefixes.
-
- 2. There is a DECNET address, that is dependent on the assigned DECNET
- address. This is calculated from the DECNET address (How to get this is
- documented in the NETWORKING MANUAL page 3-14)
- Decnet upon startup reprogram's the card and the DECNET address is used
- from then on. Notice that it starts with AA-00-04-00 which is assigned to
- DEC for all DECNET ethernet communications. Also because the DECNET
- address is user settable, there will be duplication of DECNET ethernet
- addresses in the world. Whereas all hardware address are unique to a
- individual card and is unique in the world.
-
-
- --------------------- GEEKS OF THE WORLD UNITE ! ! ! ! --------------
- ANDERSONH@WR-HITS.AF.MIL 132.11.15.12 | Jesus Loves you
- Harry Andersonh, Robins AFB Georgia | and died for You ! !
- ---------------------------------------------------------------------
-
-
-