4-7Chapter 4 Troubleshooting ProceduresNortel Networks 5399 Access Switch Hardware Installation GuideBoot FailuresThe procedures for troubleshooting a power-up failure established that:• The hardware is functional.• The Ethernet interface is functional.• The Remote Access Concentrator can communicate with theEthernet.If the Remote Access Concentrator still is not booted, you must pinpointthe problem. The boot error report can help in this process.The Remote Access Concentrator generates a boot error reportonly if it opens the boot file and an error occurs during the bootprocess.Generally, two problems cause boot failures:• The Remote Access Concentrator is not configured properly.• The load server host is not responding.The Remote Access Concentrator requests a boot image from apre-defined load host or by broadcasting a boot request. When a hostresponds, the Remote Access Concentrator loads its operational image.The Remote Access Concentrator requires setting certain configurationparameters. Enter these parameters using the Monitor Mode commandsfor the initial boot sequence. See Chapter 3 for more information on thesecommands.If the problem is a non-responsive host, the boot error report displays thatinformation under the Rsp T/O’s field. This field indicates that the RemoteAccess Concentrator timed out while waiting for a response to its bootrequest; if this field is empty, check the Remote Access Concentrator’sconfiguration parameters.
