Clear The Otuk-Ais Condition - Cisco NCS 2000 series Troubleshooting Manual

Alarm Troubleshooting

Clear the OTUK-AIS Condition

SUMMARY STEPS
1. Complete the
DETAILED STEPS
Complete the Clear the AIS Condition, on page 116
If the condition does not clear, log into the Technical Support Website at
for more information or call Cisco TAC (1 800 553-2447).
OTUK-BDI
Default Severity: Not Reported (NR), Non-Service-Affecting (NSA)
Logical Object: TRUNK
The Section Monitoring Backward Defect Indication (OTUK BDI) condition applies to TXP_MR_10G,
TXP_MR_2.5G, TXPP_MR_2.5G, TXP_MR_10E, TXP_MR_10E_C, TXP_MR_10E_L, MXP_2.5G_10G,
MXP_2.5G_10E, AR_MXP, AR_XP, AR_XPE, ADM-10G, and OTU2_XP cards when ITU-T G.709
encapsulation feature is enabled for the cards. The presence of OTUK-BDI is detected by ITU-T G.709 frame
section-monitoring overhead field. The BDI bit is a single bit defined to convey the signal fail status detected
in a section termination sink in the upstream direction.
Note
If the near-end TXP detects an OTUK-BDI condition on its Trunk-RX port, this means that the far-end TXP
has inserted the BDI bit in the transmitted (Trunk-Tx) frame, because a failure such as LOS or SD was detected
on the Trunk-RX port. Troubleshoot the failure on the far-end side to clear this condition. For information
about various DWDM LOS alarms, refer to the appropriate sections in this chapter. For an OC-N/STM-N
LOS failure or an SD, refer to the Alarm Troubleshooting chapter of the Troubleshooting Guide.
ITU-T G.709 encapsulation refers to a digital data wrapper that is transparent across networking standards
such as SONET and protocols (such as Ethernet or IP).
Clear the OTUK-BDI Condition
SUMMARY STEPS
1. At the near-end node, use site practices to clean trunk transmitting fiber toward the far-end node and the
client receiving fiber. If no site practice exists, complete the procedure in the Maintain the Node chapter
of the Configuration guide.
2. At the far-end node, determine whether an
If so, the root cause to be investigated is the Trunk-Tx side on the near-end card (the one alarmed for
OTUK-BDI) because that is the section where the AIS bit is inserted.
Clear the AIS Condition, on page 116
procedure.
OTUK-AIS , on page 340
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
Clear the OTUK-AIS Condition
procedure.
http://www.cisco.com/c/en/us/support/index.html
condition, is present on the Trunk-RX.
341