RFC 1029 (rfc1029) - Page 1 of 17

More fault tolerant approach to address resolution for a Multi-LAN system of Ethernets

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Network Working Group                                           G. Parr
Request For Comments: 1029                         University of Ulster
                                                               May 1988


        A MORE FAULT TOLERANT APPROACH TO ADDRESS RESOLUTION FOR
                    A MULTI-LAN SYSTEM OF ETHERNETS

STATUS OF THIS MEMO

   This memo discusses an extension to a Bridge Protocol to detect and
   disclose changes in neighbouring host address parameters in a Multi-
   LAN system of Ethernets.  The problem is one which is appearing more
   and more regularly as the interconnected systems grow larger on
   Campuses and in Commercial Institutions.  This RFC suggests a
   protocol enhancement for the Internet community, and requests
   discussion and suggestions for improvements.  Distribution of this
   memo is unlimited.

ABSTRACT

   Executing a protocol P, a sending host S decides, through P's routing
   mechanism, that it wants to transmit to a target host T located
   somewhere on a connected piece of 10Mbit Ethernet cable which
   conforms to IEEE 802.3.  To actually transmit the Ethernet packet, a
   48 bit Ethernet/hardware address must be generated.  The addresses
   assigned to hosts within protocol P are not always compatible with
   the corresponding Ethernet address (being different address space
   byte orderings or values).  A protocol is presented which allows
   dynamic distribution of the information required to build tables that
   translate a host's address in protocol P's address space into a 48
   bit Ethernet address.  An extension is incorporated to allow such a
   protocol to be flexible enough to exist in a Transparent Bridge, or
   generic Host.  The capability of the Bridge to detect host reboot
   conditions in a multi-LAN environment is also discussed, emphasising
   particularly the effect on channel bandwidth.  To illustrate the
   operation of the protocol mechanisms, the Internet Protocol (IP) is
   used as a benchmark [6], [8].  Part 1 presents an introduction to
   Address Resolution, whilst Part 2 discusses a reboot detection
   process.

DEFINITIONS:

      CATENET: a group of IP networks linked together
      IP     : Internet Protocol






Parr
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