A suspected bad repeater or wiring hub module is causing failure symptoms with multiple users or the complete Ethernet internetwork. Regardless of whether the failure symptom is solid or intermittent, run full manufacturer's diagnostics on the repeater or hub. Next, remove the suspected bad repeater or wiring hub module and associated cabling sections to other hubs or repeaters from the internetwork configuration and then retest the internetwork operations. Are the failure symptoms gone? The respective repeater, wiring hub module or internetwork cabling section has failed. Replace the removed unit and cables with another unit and cables. Retest the new configuration. If no problems are encountered, record the problem in the network maintenance and service log. If problems are still present, go to the next step. Even if your problem is now fixed, if you feel that one of the cabling sections caused the problem, you can verify the problem by testing the internetwork cabling run with a time domain reflectometer. If you want to further verify the repeater or wiring hub failure, you can do so with any available manufacturer diagnostics. If failure symptoms are still present, reinsert the original repeater or wiring hub module and respective cables into the network configuration. Go to the next step. Have you troubleshot and verified the integrity of the main internetwork cabling? Again, run full diagnostics on the repeater or hub and engage a protocol analysis session to gain more conclusive fault-isolation data by linking here . Troubleshoot the main internetwork segment cabling . November 15, 1996 Print This Page E-mail this URL