There is a problem with an Ethernet station node, a group of Ethernet station nodes, the complete network or a network peripheral accessing or using a particular application or group of applications, or certain directories/files on the network file server. First , check the network file server and any symptomatic Ethernet station nodes for the following software and hardware configuration setup parameters and requirements: Make sure that the network operating system network shell software, NOS NIC drivers, CONFIG.SYS, AUTOEXEC.BAT and all the necessary NOS 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 Ethernet station node 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 ne twork drive and Ethernet station-node drives are set up correctly. Make sure that all the necessary hardware installed in the file server/Ethernet station nodes is configured correctly and is functioning properly. Check the respective NOS manuals for file server setup concerning network-software-vendor requirements for both software and hardware prerequisites and their respective configurations. 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 segment for proper operation. If the failure symptom is gone, record the problem in the network maintenance and service log. If the failure symptom is still present, go to the next step. If there appears to be no problem with the file server or its setup, attempt to gather more conclusive fault-isolation data by running a protocol analysis session on the segment . Focus on the problem by capturing and viewing the high-layer communication processes. If after using these procedures and running a protocol analysis you cannot conclusively locate the problem, and you continue to find failure symptoms that point to the network file server problem, refer to both the NOS software and the particular file server/hardware manufacturer's instructions. November 15, 1996 Print This Page E-mail this URL