Abstract

Olicom commissioned Tolly to certify its product for the IBM LAN Network Manager specification. 

This Tolly Group certification report documents the successful IBM LAN Network Manager (LLM) Controlled Access Unit certification of the Olicom Controlled Access Unit OC-3610 02.02 01.04 0202. Published in September 1994, the report verifies that the product interoperated correctly with IBM’s LAN Network Manager version 1.1 and met the requirements for compatibility within IBM token-ring network management environments. According to the report, Olicom commissioned The Tolly Group in June 1994 to validate the unit’s compliance with IBM’s LNM protocol, and the product passed testing and received official LNM certification on June 24, 1994. 

The evaluation was designed to confirm that the Olicom CAU could support the management, control, and monitoring functions expected in IBM’s proprietary CAU management architecture. As shown in the test matrix on pages 2 and 3, the certification covered a broad range of technical operations, including CAU discovery, reset, graphical representation, CAU and lobe attachment module (LAM) profile reporting, wrap-state changes, LAM enable and disable functions, port enable and disable behavior, microcode update procedures, registration and deregistration with LNM, and adapter removal control. The tests also verified access-control features for unauthorized or moved adapters, as well as status reporting for RI, RO, RI/RO, and normal wrap states. Additional validation included RI/RO wrap recovery and beacon isolation fault handling. 

The methodology, described on page 3, used two token-ring workstations, one running IBM LAN Network Manager and the other acting as a target station. The CAU under test was connected to an LNM station running LAN Network Manager version 1.1 PTF UR40085, while a Network General Sniffer captured ring traffic and frame behavior. An IBM 8228 MAU was used for Ring In/Ring Out functions, and the page 4 diagram illustrates the full test bed. 

Overall, the report shows that the Olicom OC-3610 delivered the functional interoperability, management visibility, and fault-response behavior required for deployment in IBM-managed token-ring infrastructures.