RFC 1329 (rfc1329) - Page 2 of 28


Thoughts on Address Resolution for Dual MAC FDDI Networks



Alternative Format: Original Text Document



RFC 1329     Address Resolution for Dual MAC FDDI Networks      May 1992


   FDDI station can be modified to allow this.  According to the FDDI
   SMT standard [1], different addresses are required for all MACs on
   the primary and the secondary ring.

   In this paper, the MAC in a single MAC station is assumed to reside
   on the primary ring.  The application of single MAC stations which
   have their MAC attached to the secondary ring is not precluded, but
   therefor additional connectivity between the two rings is required.
   These configurations are beyond the scope of this document.

5. The Application of Transparent Bridges

   Transparent bridges can provide links to other 802 LANs or further
   inhomogeneous FDDI rings.  The connection between two inhomogeneous
   FDDI rings can be realized by one or two transparent bridges. When
   two transparent bridges are used, one transparent bridge links the
   primary rings, the other the secondary rings.  If two secondary rings
   are connected by a transparent bridge, a path of transparent bridges
   must exist between the two primary rings.  No transparent bridges are
   allowed between the primary and the secondary ring.

6. Protocol Layers in Single MAC Stations

   The new protocol layer, named load sharing layer, is drafted to be
   introduced only in dual MAC stations.  In single MAC stations, IP and
   ARP are working on top of the Subnetwork Access Protocol (SNAP) 04]
   and the Logical Link Control protocol (802.2 LLC) [3].  LLC type 1 is
   used because connectionless services are investigated only.























Kuehn