3Com S330, Reference Manual

Page: 185 / 300

Managing System Alarms 175
DSX-1/E1 CBR Module Alarms
Table 12 describes the alarms specific to DSX-1 and E1 CBR modules.
.
Table 12 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
Multiframe E1 signaling multiframe
alignment has been lost. Check the physical connection and the
carrier for configuration problems.
E1 Time Channel 16
AIS Rcv All 1s in E1 time slot 16 for 2
consecutive frames. 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.
Far End E1 Loss of
CAS The far end device has lost
Channel Associated signaling. Check the E1 configuration of the far
end device.
HP cellbus
congested High priority cell bus
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.
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
congested Low priority cell bus congested. Remove low 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 low priority devices are
using the connections, turn off some
devices.
MP cellbus
congested Medium priority cell bus
congested. 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.
Receive FIFO
Overflow Cells are being received from
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
to CBR) Replace the unit.
(continued)