ISO/IEC ISP 10613 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 network-relay function for the connectionless-mode Network Service.
This part of ISO/IEC ISP 10613 defines the RA53.53 profile, which is applicable to interworking units operating between Token Ring LAN subnetworks.
1.2 Position within the Taxonomy
The taxonomy of profiles is defined in ISO/IEC TR 10000-2. This part of ISO/IEC ISP 10613 defines the profile
RA53.53 Relaying the Connectionless-mode Network Service between Token Ring LAN subnetworks.
Figure 1 illustrates the configuration of systems to which the RA53.53 profile is applicable. The figure shows two reference points, but an implementation of this profile may include any number of attachments to Token Ring LAN subnetworks, with a reference point corresponding to each.
As this profile is a member of the RA group, it is intended that a conforming implementation is capable of interworking with other profiles of the RA group and with End Systems implementing profiles from the TA or UA groups, provided that suitable relays are in place in the case of those members of these groups which relate to different elements of the subnetwork taxonomy.
This part of ISO/IEC ISP 10613 specifies the required functions from the supporting protocol stack shown in figure 2.
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Information Technology - International Standardized Profile RA - Relaying the Connectionless-Mode Network Service - Part 12: Definition of Profile RA53.53, Relaying the Connectionless-Mode Network Service Between Token Ring LAN Subnetworks (Adopted ISO/IEC ISP 10613-12:1995, first edition, 1995-12-15)