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第一個問題:光纜的區別?
1、外觀
2、傳輸距離
3、波長
4、芯徑
第二個問題:兩臺交換機如何通過光纜進行互聯?
1、光纜(明確光纜的類型、長度)
1、交換機
2、光模塊(明確光模塊的類型、速率)
3、光纖跳線 (明確跳線的類型、長度、速率)
5、耦合器(明確耦合器的類型)
6、尾纖(明確跳線的類型、長度、速率)
7、光纖配線架或者光纖終端盒(明確具體的類型)
第三個問題:上述兩臺交換機之間無法通信?
1、交換機的帶電狀態---->交換機接口故障--->替換法
2、接口狀態-->down
3、檢查模塊-->替換新模塊或者現有正常使用--->
4、檢查跳線-->替換法
5、更換光纖配線架上未使用的光纖接口--->替換法
6、檢查交換機收發功率--->1、查看交換機接口是否支持查看-->2、使用光功率計進行測試(測試范圍,先打光后測試光
)---->
7、耦合器對接線未插接牢固-->光纜熔接有問題
8、光電復用口-->開啟光口
9、光接口協商速率問題
備注:查看接口光功率(光模塊需被網絡設備識別)
run show interfaces diagnostics optics xe-2/1/1 //juniper網絡設備
dis transceiver diagnosis interface GigabitEthernet 1/0/14 //華三設備
show intface gx/x transceiver //銳捷網絡設備
interface
例如:
////////////華三網絡設備///////////////////////
<ZongHeLou_5F-Huiju>dis transceiver diagnosis interface GigabitEthernet 1/0/14
GigabitEthernet1/0/14 transceiver diagnostic information:
Current diagnostic parameters:
Temp.( Voltage(V) Bias(mA) RX power(dBm) TX power(dBm)
34 3.34 7.04 -5.96 -5.05
Alarm thresholds:
Temp.( Voltage(V) Bias(mA) RX power(dBm) TX power(dBm)
High 88 3.80 17.00 0.00 -2.00
Low -23 2.80 1.00 -16.99 -12.50
<ZongHeLou_5F-Huiju>
//////Juniper網絡設備//////////////////
admin@YiKaTong_DC-MX960# run show interfaces diagnostics optics xe-2/1/1
Physical interface: xe-2/1/1
Laser bias current : 34.130 mA
Laser output power : 0.6870 mW / -1.63 dBm
Module temperature : 21 degrees C / 70 degrees F
Laser rx power : 0.9342 mW / -0.30 dBm
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Laser rx power high alarm : Off
Laser rx power low alarm : Off
Laser rx power high warning : Off
Laser rx power low warning : Off
Module not ready alarm : Off
Module power down alarm : Off
Tx data not ready alarm : Off
Tx not ready alarm : Off
Tx laser fault alarm : Off
Tx CDR loss of lock alarm : Off
Rx not ready alarm : Off
Rx loss of signal alarm : Off
Rx CDR loss of lock alarm : Off
Laser bias current high alarm threshold : 80.000 mA
Laser bias current low alarm threshold : 10.000 mA
Laser bias current high warning threshold : 75.000 mA
Laser bias current low warning threshold : 12.000 mA
Laser output power high alarm threshold : 1.2580 mW / 1.00 dBm
Laser output power low alarm threshold : 0.2230 mW / -6.52 dBm
Laser output power high warning threshold : 1.1210 mW / 0.50 dBm
Laser output power low warning threshold : 0.2510 mW / -6.00 dBm
Module temperature high alarm threshold : 80 degrees C / 176 degrees F
Module temperature low alarm threshold : -15 degrees C / 5 degrees F
Module temperature high warning threshold : 75 degrees C / 167 degrees F
Module temperature low warning threshold : -10 degrees C / 14 degrees F
Laser rx power high alarm threshold : 1.2589 mW / 1.00 dBm
Laser rx power low alarm threshold : 0.0100 mW / -20.00 dBm
Laser rx power high warning threshold : 1.0000 mW / 0.00 dBm
Laser rx power low warning threshold : 0.0158 mW / -18.01 dBm
////////////銳捷網絡設備////////////////////
To-Jiaoxuelou#show interfaces transceiver
========Interface GigabitEthernet 0/1========
Transceiver Type : 1000BASE-LX-SFP
Connector Type : LC
Wavelength(nm) : 1310
Transfer Distance :
SMF fiber
-- 10km
50/125 um OM2 fiber
-- 550m
62.5/125 um OM1 fiber
-- 550m
Digital Diagnostic Monitoring : YES
Vendor Serial Number : FNS172830XF
========Interface GigabitEthernet 0/2========
Transceiver Type : 1000BASE-LX-SFP
Connector Type : LC
Wavelength(nm) : 1310
Transfer Distance :
SMF fiber
-- 10km
Digital Diagnostic Monitoring : NO
Vendor Serial Number : G1HD6B1022424
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