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 CSMA/CD and Token Ring LAN subnetworks.
ISO/IEC ISP 10612-1 specifies the relay function and LAN subnetwork-independent requirements, ISO/IEC ISP 10612-2 specifies the CSMA/CD LAN subnetwork-dependent requirements, ISO/IEC ISP 10612-3 specifies the Token Ring LAN subnetwork- dependent requirements, and this part of ISO/IEC ISP 10612 defines the profile RD51.53.
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 10612 defines the profile:
RD51.53 Relaying the MAC service, using transparent bridging, between a CSMA/CD LAN subnetwork and a Token Ring LAN subnetwork.
Figure 1 illustrates the configuration of systems to which this part of ISO/IEC ISP 10612 is applicable. The figure shows two reference points, but an implementation of this profile may include more attachments to CSMA/CD LAN and Token Ring 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.
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Information Technology - International Standardized Profile RD - Relaying the MAC Service Using Transparent Bridging - Part 7: Profile RD51.53 (CSMA/CD LAN - Token Ring LAN) (Adopted ISO/IEC ISP 10612-7:1995, first edition, 1995-06-15)