of FRR thresholds. If FRR is also enabled, then PREFEC thresholds are expected to be manually tuned to
provide an early warning before the protection is triggered. The information regarding PREFEC_SD and
PREFEC_SF are made available for the show controller dwdm interface-path-id g709 command. 10 GigE
and 40 GigE DWDM interfaces support standard FEC and enhanced i.4 and i.7 FEC modes while 100GigE
supports standard FEC.
Task ID
OperationsTask ID
readdwdm
readinterface
readsonet-sdh
Examples
This example shows sample output from the show controllers dwdm g709 command when FEC and g709
are both active:
RP/0/RSP0/CPU0:Router# show controller dwdm 0/5/0/0 g709
Mon Feb 10 13:12:00.268 IST
G709 Status
OTU
LOS = 0 LOF = 0 LOM = 0
BDI = 0 IAE = 1 BIP = 0
BEI = 0 TIM = 0
ODU
AIS = 0 BDI = 0 OCI = 0
LCK = 0 BIP = 0 BEI = 0
PTIM = 0 TIM = 0
FEC Mode: Enhanced (Default)
EC(current second) = 0 EC = 0 UC = 0
PREFEC BER < 9.01E-11 Q > 6.46 Q Margin > 7.26
Detected Alarms: None
Asserted Alarms: None
Alarm Reporting Enabled for: LOS LOF LOM IAE OTU-BDI OTU-TIM OTU_SD_BER PREFEC_SD_BER
PREFEC_SF_BER ODU-AIS ODU-BDI OCI LCK PTIM ODU-TIM ODU_SF_BER ODU_SD_BER
FECMISMATCH
BER Thresholds: preFEC-SF = E-9 preFEC-SD = E-11
OTU-SF = E-3 OTU-SD = E-6
ODU-SF = E-3 ODU-SD = E-6
Connectivity Info
Network Port ID: Not Configured
Network Connection ID: Not Configured
OTU TTI Sent String ASCII : Tx TTI Not Configured
OTU TTI Received String ASCII : Rx TTI Not Received
OTU TTI Expected String ASCII : Exp TTI Not Configured
ODU TTI Sent String ASCII : Tx TTI Not Configured
ODU TTI Received String ASCII : Rx TTI Not Received
ODU TTI Expected String ASCII : Exp TTI Not Configured
This table describes selected fields from the show controllers dwdm command output.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
57
Dense Wavelength Division Multiplexing Commands on the Cisco ASR 9000 Series Router
show controller dwdm
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