Dsx-1/E1 Cbr Module Alarms - 3Com SuperStack II PathBuilder S330 Reference Manual

DSX-1/E1 CBR Module Alarms

Table 12 describes the alarms specific to DSX-1 and E1 CBR modules.
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Table 12 DSX-1/E1 CBR Module Alarms
Alarm Meaning
Cellbus parity Parity error on cells received
from cell bus.
E1 Loss of CAS E1 signaling multiframe
Multiframe alignment has been lost.
E1 Time Channel 16 All 1s in E1 time slot 16 for 2
AIS Rcv consecutive frames.
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.
LP cellbus Low priority cell bus congested. Remove low priority connections until
congested
MP cellbus Medium priority cell bus
congested congested.
Receive FIFO Cells are being received from
Overflow the cell bus faster than the CBR
can process them.
SAR SRAM failure SAR SRAM failure (applicable
to CBR)
(continued)
Managing System Alarms
Troubleshooting Steps
Check VC and port configuration.
Check the physical connection and the
carrier for configuration problems.
Make sure both the local device and
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.
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.
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.
Remove medium 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 medium
priority devices are using the
connections, turn off some devices.
Reconfigure the CBR connection so
that it has adequate bandwidth.
Replace the unit.
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