Hello everyone!
Today I will continue to show useful commands on the OLT with examplers. This is the sixth article about basic commands on the OLT. In this article, I have presented very useful and important commands for troubleshooting.
31. Command for display autofind time:
TEST(config)#display ont autofind time
{ <cr>||<K> }:
Command:
display ont autofind time
Aging time of the automatically found ONTs : 300(s)
Interval of automatically finding ONT(Only for GPON): 5(s)
32. Command for display port state:
TEST(config-if-gpon-0/1)#display port state 0
{ <cr>||<K> }:
Command:
display port state 0
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Port Information
----------------------------------------------------------------------------
F/S/P 0/1/0
Port state Online
Last down cause -
Last up time 2021-06-08 16:28+02:00 DST
Last down time -
Port energy-saving flag No
xPON MAC chipset state Normal
Signal detect Normal
Available bandwidth(Kbps) 1211505
Illegal rogue ONT Inexistent
OTDR test status -
----------------------------------------------------------------------------
Optical Module State
----------------------------------------------------------------------------
Optical Module status Online
Laser state Normal
TX fault Normal
Temperature(C) 36
TX Bias current(mA) 11
Supply Voltage(V) 3.19
TX power(dBm) 5.27
----------------------------------------------------------------------------
Optical Module Manufacturer Information
----------------------------------------------------------------------------
Vendor name WTD
Vendor rev 2.0
Vendor OUI 00-1c-ad
Vendor PN RTXM167-527
Vendor SN BP1626020XXXXX
Date Code 16-06-27
Vendor specific 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
----------------------------------------------------------------------------
Optical Module Static Information
----------------------------------------------------------------------------
Module type GPON
Module sub-type CLASS C+
Used type OLT
Encapsulation Type SFP
SFF-8472 Compliance Includes functionality described in Rev 9.5
Max Distance(Km) 60
Max rate(Kbps) 2500000
Rate Identifier Unspecified(0x0)
Wave length(nm) 1490
Fiber type Single Mode
Identifier SFP or SFP Plus
Ext.Identifier GBIC/SFP function is defined by two-wire
interface ID only
Connector SC
Encoding NRZ
Length(9um)(km) 60.0
Length(50um)(m) -
Length(62.5um)(m) -
Length(copper)(m) -
Length(50um,OM3)(m) -
BR,max Unspecified
BR,min Unspecified
Diagnostic Monitoring Type Digital diagnostic monitoring
Externally Calibrated
Power measurement type: Average Power
Options TX_DISABLE,and disables the serial output
TX_FAULT
LOS(signal inverted from standard definition)
Enhanced Options Alarm/warning flags
TX_DISABLE control and monitoring
TX_FAULT monitoring
OTDR capability Not support
OTDR wavelength -
Cc_base 0x43(Correct)
CC_EXT 0xfc(Correct)
----------------------------------------------------------------------------
Optical Module Threshold Parameter
----------------------------------------------------------------------------
Rx power warning
threshold(dBm) [-32.2,-12.0]
Rx power alarm
threshold(dBm) [-33.0,-11.0]
Tx power warning
threshold(dBm) [2.5,7.0]
Tx power alarm
threshold(dBm) [2.0,7.6]
Tx bias warning
threshold(mA) [0.000,70.000]
Tx bias alarm
threshold(mA) [0.000,90.000]
Supply voltage warning
threshold(V) [3.100,3.500]
Supply voltage alarm
threshold(V) [3.000,3.600]
Temperature warning
threshold(C) [-8,75]
Temperature alarm
threshold(C) [-13,80]
----------------------------------------------------------------------------
This is a very important and useful command, we can use for troubleshooting. We can see much information about the state of PON port.
33. Command for display information about port:
TEST(config-if-gpon-0/1)#display port info 0
{ <cr>||<K> }:
Command:
display port info 0
-----------------------------------------------------------
F/S/P 0/1/0
Min distance(km) 0
Max distance(km) 20
Max guaranteed bandwidth(kbps) -
Left guaranteed bandwidth(kbps) 1170048
Number of T-CONTs 25
Autofind Enable
FEC check Enable
Admin State On
ONT encryption key switching interval(m) Disable
PON-ID switch Disable
PON-ID identifier 0
Jumbo frame switch Not support
Port MTU(bytes) 2052
Surplus bandwidth assignment Disable
Best-effort bandwidth assignment -
Traffic alarm-profile ID -
ONT online power threshold(dBm) -
Low-latency no
-----------------------------------------------------------
34. Command for display statistics line quality:
TEST(config-if-gpon-0/1)#display statistics ont-line-quality 0
{ <cr>|ontid<U><0,127>||<K> }:
Command:
display statistics ont-line-quality 0
------------------------------------------------------------------
Line quality statistic ONTID : 0
LOFi alarm count : 0
DOWi alarm count : 0
Upstream frame delimiter error count : 0
Upstream frame BIP error count : 0
Downstream frame BIP error count : 0
Upstream frame FEC corrected blocks : 0
Upstream frame FEC uncorrected blocks : 0
Upstream frame HEC error count : 0
Upstream FCS error count : -
Upstream frame bit error rate : 0
Upstream ETH frame error rate : -
Upstream GEM frame error rate : -
------------------------------------------------------------------
Line quality statistic ONTID : 1
LOFi alarm count : 0
DOWi alarm count : 0
Upstream frame delimiter error count : 0
Upstream frame BIP error count : 0
Downstream frame BIP error count : 0
Upstream frame FEC corrected blocks : 0
Upstream frame FEC uncorrected blocks : 0
Upstream frame HEC error count : 0
Upstream FCS error count : -
Upstream frame bit error rate : 0
Upstream ETH frame error rate : -
Upstream GEM frame error rate : -
------------------------------------------------------------------
---- More ( Press 'Q' to break ) ----
This command we can use for troubleshooting. The event/alarms for each ONTID are displayed separately. Or we can use command only for one ONTID: TEST(config-if-gpon-0/1)#display statistics ont-line-quality 0 0.
Thank you!
