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Full Description

1

Scope

1.1

General ISO/IEC ISP 10612 is applicable to interworking units concerned with operating in the Open Systems Interconnection (OSI) environment. It specifies a combination of OSI base standards that collectively provide a MAC relay function between LAN subnetworks. This part of ISO/IEC ISP 10612 is applicable to interworking units operating between Token Ring and FDDI LAN subnetworks.

ISO/IEC ISP 10612-1 specifies the relay function and LAN subnetwork-independent requirements, ISO/IEC ISP 10612-3 specifies the Token Ring LAN subnetwork-dependent requirements, ISO/IEC ISP 10608-14 specifies the FDDI LAN subnetwork-dependent requirements, and this part of ISO/IEC ISP 10612 defines the profile RD53.54.

1.2

Position within the Taxonomy The taxonomy of OSI profiles is defined in ISO/IEC TR 10000-2. This part of ISO/IEC ISP defines the profile:

RD53.54

Relaying the MAC service, using transparent bridging, between a Token Ring LAN subnetwork and an FDDI LAN subnetwork.

1.3

Scenario Figure 1 illustrates the configuration of systems to which this part of ISO/IEC ISP 10612 is applicable. The figure shows two ref erence points, but an implementation of this profile may include more attachments to Token Ring LAN and FDDI LAN subnetworks with a reference point corresponding to each.

This part of ISO/IEC ISP 10612 specifies the required functions from the supporting protocol stack shown in figure 2.