For checking transmission links on Huawei Routers, it is good to know how to find out the optical power of 100GE modules or interfaces for troubleshooting and making sure the desired or optimal range is meet.
Here are the sample commands for checking the TX/RX optical power.
display interface 100GE <slot number>
Sample Output:
<Huawei-Router>display interface 100GE 5/0/0
100GE5/0/0 current state : UP (ifindex: 146)
Line protocol current state : UP
Link quality grade : GOOD
Description: Connection to RouterA
Route Port,The Maximum Transmit Unit is 9194
IP Sending Frames’ Format is PKTFMT_ETHNT_2, Hardware address is abcd-ef12-3456
Factor/Module: cfp, Standard: 100GE-LR4
The Vendor PN is OM9550L
The Vendor Name is HISILICON
Port BW: 100G, Transceiver max BW: 103.125Gbps, Transceiver Mode: SingleMode
Connector Type: LC, Transmission Distance: 10km
WaveLength: 1295nm 1300nm 1304nm 1309nm
Rx Warning range: [-10.60, 4.50]dBm, Tx Warning range: [-4.30, 4.50]dBm
Rx Power[0]: -0.20dBm, Tx Power[0]: 1.01dBm
Rx Power[1]: -0.42dBm, Tx Power[1]: 0.33dBm
Rx Power[2]: -0.38dBm, Tx Power[2]: 0.70dBm
Rx Power[3]: -0.62dBm, Tx Power[3]: 0.92dBm
Loopback: none, LAN full-duplex mode, Pause Flowcontrol: Receive Enable and Send Enable
Last physical up time : 2023-02-08 09:51:32+08:00
Last physical down time : 2023-02-07 11:15:44+08:00
Current system time: 2023-09-15 15:31:14+08:00
Statistics last cleared:never
Last 300 seconds input rate: 2424559315 bits/sec, 288380 packets/sec
Last 300 seconds output rate: 1187233826 bits/sec, 256142 packets/sec
Input peak rate 6544096525 bits/sec, Record time: 2023-05-20 23:01:33+08:00
Output peak rate 2651998704 bits/sec, Record time: 2023-09-13 22:15:33+08:00
Input: 3883451734254108 bytes, 3561728126408 packets
Output: 1813287764852375 bytes, 3076588129479 packets
Input:
Unicast: 3561699659534 packets, Multicast: 28455447 packets
Broadcast: 11427 packets, JumboOctets: 0 packets
CRC: 0 packets, Symbol: 0 packets
Overrun: 0 packets, InRangeLength: 0 packets
LongPacket: 0 packets, Jabber: 0 packets, Alignment: 0 packets
Fragment: 0 packets, Undersized Frame: 0 packets
RxPause: 0 packets
Output:
Unicast: 3076559443398 packets, Multicast: 28686074 packets
Broadcast: 7 packets, JumboOctets: 1925083 packets
Lost: 0 packets, Overflow: 0 packets, Underrun: 0 packets
System: 0 packets, Overruns: 0 packets
TxPause: 0 packets
Local fault: normal, Remote fault: normal.
Last 300 seconds input utility rate: 2.42%
Last 300 seconds output utility rate: 1.18%
Sample Output:
<Huawei-Router>display interface 100GE 5/1/0
100GE5/1/0 current state : DOWN(LOS) (ifindex: 147)
Line protocol current state : DOWN
Link quality grade : —
Description: Connection to RouterB
Route Port,The Maximum Transmit Unit is 1500
Internet protocol processing : disabled
IP Sending Frames’ Format is PKTFMT_ETHNT_2, Hardware address is abcd-eeee-ffff
Factor/Module: QSFP28, Standard: 100GBASE-ER4, FecMode: Disable
The Vendor PN is OM9558ES100
The Vendor Name is HISILICON
Port BW: 100G, Transceiver max BW: 100G, Transceiver Mode: SingleMode
Connector Type: LC, Transmission Distance: 40km
WaveLength: 1295.56nm 1300.05nm 1304.58nm 1309.14nm
Rx Warning range: [-20.915, -3.500]dBm, Tx Warning range: [-2.900, 2.899]dBm
Rx0 Power: -40.00dBm, Tx0 Power: -0.34dBm
Rx1 Power: -40.00dBm, Tx1 Power: -0.71dBm
Rx2 Power: -40.00dBm, Tx2 Power: -0.80dBm
Rx3 Power: -40.00dBm, Tx3 Power: -0.47dBm
Important details to take note:
– current state : UP or DOWN
– Link quality grade will show if “GOOD” or if it now it will just show “–”
-Warning or threshold range will differ depending on what type of module is used, compare LR4 and ER4
LR4:
Connector Type: LC, Transmission Distance: 10km
WaveLength: 1295nm 1300nm 1304nm 1309nm
ER4:
Connector Type: LC, Transmission Distance: 40km
WaveLength: 1295.56nm 1300.05nm 1304.58nm 1309.14nm
– 100GE interface/ports has four(4) 25G optical waves
LR4:
Rx Warning range: [-10.60, 4.50]dBm, Tx Warning range: [-4.30, 4.50]dBm
ER4:
Rx Warning range: [-20.915, -3.500]dBm, Tx Warning range: [-2.900, 2.899]dBm
within the optimal specs:
Rx Power[0]: -0.20dBm, Tx Power[0]: 1.01dBm
Rx Power[1]: -0.42dBm, Tx Power[1]: 0.33dBm
Rx Power[2]: -0.38dBm, Tx Power[2]: 0.70dBm
Rx Power[3]: -0.62dBm, Tx Power[3]: 0.92dBm
if no power received (-40 dBm)
Rx0 Power: -40.00dBm, Tx0 Power: -0.34dBm
Rx1 Power: -40.00dBm, Tx1 Power: -0.71dBm
Rx2 Power: -40.00dBm, Tx2 Power: -0.80dBm
Rx3 Power: -40.00dBm, Tx3 Power: -0.47dBm
To see the extensive information for the interface:
display interface 100GE <slot number> extensive
Another command to use to find out the receive and optical power of 100GE interface:
display interface phy-option 100GE <slot-number>
Sample Output:
<Huawei-Router1>display interface phy-option 100GE 6/0/0
100GE60/0
Port Physical Status : UP
Physical Down Reason : none
Duplex mode : full-duplex
Loopback : none
Pause Flowcontrol : Receive Enable and Send Enable
Optical information:
Factor/Module: cfp, Standard: 100GE-LR4
The Vendor PN is OM9550L
The Vendor Name is HISILICON
Transceiver max BW: 103.125Gbps, Transceiver Mode: SingleMode
Connector Type: LC, Transmission Distance: 10km
WaveLength: 1295nm 1300nm 1304nm 1309nm
Rx Power Total: 5.60dBm, Tx Power Total: 6.77dBm
Rx Power[0]: -0.20dBm, Tx Power[0]: 1.01dBm
Rx Power[1]: -0.43dBm, Tx Power[1]: 0.33dBm
Rx Power[2]: -0.39dBm, Tx Power[2]: 0.70dBm
Rx Power[3]: -0.62dBm, Tx Power[3]: 0.92dBm
Rx Warning range: [-10.60, 4.50]dBm, Tx Warning range: [-4.30, 4.50]dBm
Carrier delay(up-hold-time) is 3000 msec, Carrier delay(down-hold-time) is 0 msec
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