3Com S330 DSX-1/E1 CBR Module Alarms, Describes the alarms specific to DSX-1 and E1 CBR modules

176CHAPTER 5: PATHBUILDER S330 DIAGNOSTICS AND PERFORMANCE STATISTICS

DSX-1/E1 CBR Module Alarms

Table 29 describes the alarms specific to DSX-1 and E1 CBR modules.

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Table 29 DSX-1/E1 CBR Module Alarms

Alarm Meaning Troubleshooting Steps

Cellbus parity	Parity error on cells received
	from cell bus.

Check VC and port configuration.

E1 Loss of CAS	E1 signaling multiframe	Check the physical connection and the
Multiframe	alignment has been lost.	carrier for configuration problems.
E1 Time Channel 16 All 1s in E1 time slot 16 for 2		Make sure both the local device and
AIS Rcv	consecutive frames.	the far end device are configured for
		Time Slot 16 framing. If both devices
		are correctly configured, there may be
		a hardware problem in either device.

Far End E1 Loss of	The far end device has lost
CAS	Channel Associated signaling.
HP cellbus	High priority cell bus
congested	congested.
	The cell port has been
	configured to pass more CBR
	traffic than it can physically
	handle. The aggregate
	bandwidth of the CBR
	connections exceeds the total
	bandwidth of the port. This
	alarm indicates that you either
	mistakenly oversubscribed the
	cell port with CBR connections,
	or more connections than
	expected are simultaneously
	active. When this condition
	exists on the HP cell bus, lower
	priority cell busses will not be
	able to pass traffic out.

Check the E1 configuration of the far end device.

Remove high priority connections until the configured bandwidth is less than or equal to the total bandwidth on the port. If you have over-subscribed the port and all high priority devices are using the connections, turn off some devices.

LP cellbus	Low priority cell bus congested. Remove low priority connections until
congested		the configured bandwidth is less than
		or equal to the total bandwidth on the
		port. If you have over-subscribed the
		port and all low priority devices are
		using the connections, turn off some
		devices.
MP cellbus	Medium priority cell bus	Remove medium priority connections
congested	congested.	until the configured bandwidth is less
		than or equal to the total bandwidth

on the port. If you have over- subscribed the port and all medium priority devices are using the connections, turn off some devices.

Receive FIFO	Cells are being received from
Overflow	the cell bus faster than the CBR
	can process them.

Reconfigure the CBR connection so that it has adequate bandwidth.

SAR SRAM failure SAR SRAM failure (applicable Replace the unit. to CBR)

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