Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!ccicpg!taurus!capone!jk
From: jk@capone.UUCP (John Knight)
Newsgroups: comp.protocols.tcp-ip
Subject: TCP/IP and OSI over FDDI
Keywords: TCP/IP, OSI, FDDI, routing
Message-ID: <247@capone.UUCP>
Date: 18 Sep 89 22:15:13 GMT
Distribution: na
Organization: ICL North America, Irvine, CA.
Lines: 23


Hi Netlanders:
         
My company is developing an FDDI controller and is interested in 
running several different protocol stacks simultaneously over the 
controller.  At a minimum, we'd like to run both TCP/IP and OSI.  
With our current implementation of Ethernet, it is possible to 
route the packets to the appropriate protocol stack (ie. TCP/IP or 
OSI) via the type/length field in the Ethernet frame header.
         
We would like to do the same type of thing with FDDI frames.  
Unfortunately, the X3T9.5 MAC soon-to-be standard does not tell 
how one might route packets to various different protocol stacks.
         
Does anyone know if there is a document that specifies how to 
route an FDDI frame to OSI or TCP/IP protocol stacks?  Even within 
TCP/IP there is a question on how to route ARP and RARP traffic.  
The main burning question is as follows: How can/does the FDDI 
software distinguish between traffic intended for OSI, IP, RARP, 
or ARP?
         
In advance, thanks for your help.
John Knight