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From: dd@ariel.unm.edu
Newsgroups: comp.dcom.sys.cisco
Subject: Re:  Questions about Appletalk routing
Message-ID: <22019@boulder.Colorado.EDU>
Date: 8 Jun 90 02:30:08 GMT
Sender: daemon@boulder.Colorado.EDU
Lines: 36

> o Is is sufficient to ensure that my gateway Mac's are running Ethertalk V1.0
>   and everything will play together without a hitch?  [He asks, hopefully :-)]

  I dunno, sorry.

> o Has anyone 'out there' used the Apple Internet Router software in
>   conjunction with cisco's routing Ethertalk?  Are there any caveats
>   that we should be aware of?

  Again, I don't know.
 
> o Is Ethertalk addressing so radically different from Localtalk?  Part of
>   my confusion arises from my impression that Appletalk V1 uses 8-bit
>   addressing and Appletalk V2 uses 24-bit addressing...  but cisco's
>   documentation says that they deal with 24-bit Appletalk addresses
>   and yet only support Appletalk V1.  Huh?

  Among other changes, I believe AppleTalk has gone IEEE 802.2 compatible,
  with the Ethernet address being the MAC address of the workstation, in
  the case that EtherTalk is being used.  Previously, they used an 8 bit
  MAC address, and "hacked" it into working on the Ethernet.  Of course
  other things have changed too, but I believe this is the source of your
  confusuion on this point.  I believe that CISCO supports Ethernet MAC
  headers instead of IEEE 802.2 headers, with an AppleTalk type field
  (0x809b), and the old packet formats...
 
> Thanks in advance to any and all that respond,

  Not sure it was of any assistance!

> Eriks

--------------------------------------------------------------------
Don Doerner                                         dd@ariel.unm.edu
2701 Campus Blvd. NE                                   (505)277-8036
Albuquerque, NM, 87131