RFC 1329 (rfc1329) - Page 2 of 28
Thoughts on Address Resolution for Dual MAC FDDI Networks
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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
