14.4 There appears to be a problem with abnormal network bandwidth between a particular ring station/group of ring stations, or network peripheral, and the network file server. First, check the network file server for the following software and hardware configuration setup parameters and requirements: Make sure that the NOS network shell software, NOS NIC drivers, CONFIG.SYS, AUTOEXEC.BAT, and all the necessary network operating system files are set up for the respective NOS specialized configuration and NOS hierarchical directory structure. Check the NOS directory structure as it relates to the ring station and any respective network peripheral access. Check all the NOS security rights configurations. Make sure that all the necessary directories/files for all NOS applications on the network drive are set up correctly. Make sure that all the necessary hardware is installed in the file server, is configured correctly, and is functioning properly. Check the respective NOS and software application manuals for file server setup concerning network-software-vendor requirements for both software and hardware prerequisites and their respective configuration. Are there any identifiable hardware or software configuration setup problems with the network file server? Take the necessary action to resolve the configuration problem and retest the ring for proper operation. If the failure symptom is gone, record the problem in the network maintenance and service log. If the failure symptom still exists, go to the next step . Check the file server NIC buffer space specifications to see if they meet the NOS and software application manufacturers' requirements for the ring user population and access. Is the file server's NIC low on required buffer space for the NOS or particular application's operation? Take the necessary action to resolve the problem and retest the ring for proper operation. If the failure symptom is gone, record the problem in the network maintenance and service log. If the failure symptom still exists, go to the next step . Attempt to gather more conclusive fault-isolation data by running a protocol analysis session on the ring. Go to page 15 and focus on the problem by capturing and viewing the high-layer communication processes and the baseline network bandwidth. If after using this procedure you cannot conclusively locate the problem and continue to find failure symptoms that point to a network file server problem, reference both the NOS software and the particular file server/hardware manufacturers' instructions. November 15, 1996 Print This Page E-mail this URL