176 CHAPTER 5: PATH BUILDER S330 DIAGNOSTICS AND PERFORMANCE STATISTICSDSX-1/E1 CBR Module AlarmsTable 29 describes the alarms specific to DSX-1 and E1 CBR modules..Table 29 DSX-1/E1 CBR Module AlarmsAlarm Meaning Troubleshooting StepsCellbus parity Parity error on cells receivedfrom cell bus.Check VC and port configuration.E1 Loss of CASMultiframeE1 signaling multiframealignment has been lost.Check the physical connection and thecarrier for configuration problems.E1 Time Channel 16AIS RcvAll 1s in E1 time slot 16 for 2consecutive frames.Make sure both the local device andthe far end device are configured forTime Slot 16 framing. If both devicesare correctly configured, there may bea hardware problem in either device.Far End E1 Loss ofCASThe far end device has lostChannel Associated signaling.Check the E1 configuration of the farend device.HP cellbuscongestedHigh priority cell buscongested.The cell port has beenconfigured to pass more CBRtraffic than it can physicallyhandle. The aggregatebandwidth of the CBRconnections exceeds the totalbandwidth of the port. Thisalarm indicates that you eithermistakenly oversubscribed thecell port with CBR connections,or more connections thanexpected are simultaneouslyactive. When this conditionexists on the HP cell bus, lowerpriority cell busses will not beable to pass traffic out.Remove high priority connections untilthe configured bandwidth is less thanor equal to the total bandwidth on theport. If you have over-subscribed theport and all high priority devices areusing the connections, turn off somedevices.LP cellbuscongestedLow priority cell bus congested. Remove low priority connections untilthe configured bandwidth is less thanor equal to the total bandwidth on theport. If you have over-subscribed theport and all low priority devices areusing the connections, turn off somedevices.MP cellbuscongestedMedium priority cell buscongested.Remove medium priority connectionsuntil the configured bandwidth is lessthan or equal to the total bandwidthon the port. If you have over-subscribed the port and all mediumpriority devices are using theconnections, turn off some devices.Receive FIFOOverflowCells are being received fromthe cell bus faster than the CBRcan process them.Reconfigure the CBR connection sothat it has adequate bandwidth.SAR SRAM failure SAR SRAM failure (applicableto CBR)Replace the unit.(continued)
