S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
Table 40 IMA Failure Alarm Support
Req.
R-138
Failure Alarm
LIF
S/UNI-IMA-4 support
S/UNI-IMA-4 may generate an interrupt and latch the
internal LIF error status once a link enters or exits LIF
defect.
R-139
R-140
LODS
S/UNI-IMA-4 may generate an interrupt and latch the
internal LODS error status once a link enters or exits LODS
defect.
S/UNI-IMA-4 may generate an interrupt and latch the
internal RDI-IMA status when RDI-IMA condition is entered
or exited on a TX link. It is up PM to declare the alarm
condition.
RFI-IMA
R-141
R-142
TX-Mis-Connected
RX-Mis-Connected
It is up to PM to detect mis-connectivity on TX links,
possibly through the use of test patterns.
FE may indicate that the link is mis-connected by moving
the RX LSM to corresponding UNUSABLE state, in which
case RIPP will generate an interrupt and latch the error
status.
It is up to PM to detect mis-connectivity on RX links.
One possible way is to utilize the RX_IMA_ID field in the
group context. Instead of letting RIPP capture the
RX_IMA_ID from incoming ICP cells, PM can choose to
initialize the group context with a expected RX_IMA_ID and
set the RX_IMA_ID_VALID field to ‘1’. In this case the mis-
connected RX links will likely to have a wrong IMA ID value
and will not come up, which will eventually cause an
interrupt.
Also PM may utilize the test pattern procedure for this
purpose.
O-28
TX-Fault
It is up to PM to declare fault conditions on TX links. To
facilitate this, RIPP provides read access to the NE/FE
LSM and GSM states in the context memory.
O-29
RX-Fault
It is up to PM to declare fault conditions on RX links. To
facilitate this, RIPP provides read access to the NE/FE
LSM and GSM states in the context memory.
R-143
R-144
R-145
R-146
TX-Unusable-FE
RX-Unusable-FE
Start-up-FE
S/UNI-IMA-4 may generate an interrupt and latch the
internal FE_TX_Unusable error status, once FE TX LSM
enters UNUSABLE state.
S/UNI-IMA-4 may generate an interrupt and latch the
internal FE_RX_Unusable error status, once FE RX LSM
enters UNUSABLE state.
S/UNI-IMA-4 may generate an interrupt if a FE GSM state
transition occurs. PM may then read the FE GSM state
from the RIPP context memory.
S/UNI-IMA-4 may generate an interrupt and latch the
internal Config-Aborted error status, once it decides the FE
parameters are unacceptable and the GSM should go to
Config-Aborted state.
Config-Aborted
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
292
PMC [ PMC-SIERRA, INC ]
