排除NCS上的介面關閉或抖動問題

簡介

本檔案介紹如何疑難排解介面關閉或介面翻動問題。  

採用元件

本檔案特定於Cisco IOS^®XR，但不限於特定軟體版本。

本檔案是NCS平台特定檔案。

本文中的資訊是根據特定實驗室環境內的裝置所建立。文中使用到的所有裝置皆從已清除（預設）的組態來啟動。如果您的網路運作中，請確保您瞭解任何指令可能造成的影響。

背景

發生介面關閉或介面翻動的原因有多種。如圖1所示，由於存在多個裝置，鏈路可能會斷開。它顯示了一個NCS路由器，其中有一個前面板埠透過PHY（物理層）裝置連線到NPU（網路處理器單元），裝置位於兩者之間（稱為基於PHY的埠）。有些平台的前面板埠直接連線到NPU（稱為PHYless埠）。一台路由器可以同時具有兩種變體。

影像1

光纖

介面

請注意，在Cisco IOS XR上，介面始終以這種方式描述。

R/S/I/P：機架/插槽/例項/埠/分支

R/S/I/P/B：機架/插槽/例項/埠/

連線埠速度

某些平台/線卡在某些埠上支援多種速度。例如：1/10GE、25/40GE、40/100GE、1/10/25GE。

可在每個單獨的埠或每組埠上配置速度。檢視NCS上埠對映的硬體文檔。檢查是否正確設定了埠速度。有些埠可以自動檢測速度，有些則需要配置。

有些埠可以按組進行配置（通常為四埠：四埠組）。

舉例來說：

(config)#hw-module quad 0 location 0/0/CPU0 mode ?
  WORD  10g or 25g

某些連線埠可以個別設定。這通常是100G埠。100G是預設速度，但您可以配置40G。

舉例來說：

(config)#controller optics 0/0/1/0
(config-Optics)#speed 40g

故障信令機制

請注意，在排除介面故障時，鏈路故障信令機制可發揮作用。在10G和更高版本上，PHY層中包括鏈路故障信令機制。因此，當檢測到本地故障時，遠端終端會收到通知。

圖2

在GigE介面上，沒有這樣的板載機制。檢查是否將「ethernet oam」配置為替代方法。

舉例來說：

interface GigabitEthernet0/6/0/2
 ethernet oam
  uni-directional link-fault detection
  action
   uni-directional link-fault efd

DWDM可調光纖

在支援頻率調諧的DWDM光纖上，使用此配置設定可以使用的頻率（基於電路提供商設定的DWDM電路）：

以下為指令：

controller optics 0/6/0/2
 dwdm-carrier {100MHz-grid | 50GHz-grid} frequency {frequency}

驗證設定：

RP/0/RP0/CPU0:NCS-5508#show controllers optics 0/6/0/2 dwdm-carrier-map
DWDM Carrier Band:: OPTICS_C_BAND
MSA ITU channel range supported: 1~96
DWDM Carrier Map table
----------------------------------------------------
ITU Ch      G.694.1     Frequency     Wavelength
 Num        Ch Num        (THz)          (nm)
----------------------------------------------------
     1       -35           191.35      1566.723
----------------------------------------------------
     2       -34           191.40      1566.314
----------------------------------------------------
     3       -33           191.45      1565.905
----------------------------------------------------
     4       -32           191.50      1565.496
----------------------------------------------------
...
----------------------------------------------------
    95        59           196.05      1529.163
----------------------------------------------------
    96        60           196.10      1528.773
----------------------------------------------------

在DWDM光纖上，所有DWDM特定調整都是在控制器dwdm配置下完成的：

RP/0/RP0/CPU0:NCS-5508(config)#controller dwdm 0/6/0/2 ?
  admin-state       Configure the transport admin state of the controller: in-service, out-of-service or maintenance
  g709              Configure G709 parameters
  laser             To be deprecated and removed in 7.5.1 release
  log               Proactive log
  loopback          Configure loopback mode
  network           Configure DWDM network information
  pm                Configure pm parameters
  proactive         Enable Proactive Protection Feature
  rx-los-threshold  Configure transponder receive power LOS threshold
  transmit-power    Configure transponder transmit power
  vtxp-monitor      Enable VTXP monitoring function
  wavelength        Configure ITU Channel, Wavelength and Frequency
  <cr>

RP/0/RP0/CPU0:NCS-5508(config-dwdm)#g709 fec ?
  15sdfec                       15%-SD Forward Error Correction
  15sdfecde                     15%-SD Forward Error Correction with Diff
  ci-bch                        Continuously Interleaved BCH FEC
  disable                       Disable FEC
  enhanced                      Enhanced FEC mode
  high-gain                     To be deprecated and removed in 7.5.1 release
  high-gain-hd-fec              7% HD FEC (Staircase FEC)
  high-gain-multivendor-hd-fec  7% HD FEC (Staircase FEC) Multivendor Interoperable
  high-gain-sd-fec              7% CISCO SD FEC (Soft-Decision FEC)
  long-haul                     To be deprecated and removed in 7.5.1 release
  long-haul-hd-fec              20% HD FEC (Staircase FEC)
  long-haul-sd-fec              20% CISCO SD FEC (Soft-Decision FEC)
  standard                      Standard FEC mode

IPoDWDM -相干DSP

相干DSP支援遠距離高速傳輸(100/200/400G)。DWDM處理由相干DSP（數位訊號處理器）處理。

此類NCS模組的示例：NC55-6X200-DWDM-S或NC55-MPA-2TH-S（帶CFP2-WDM-D-1HL）

RP/0/RP0/CPU0:NCS-5508(config)# controller coherentDSP 0/6/0/0
RP/0/RP0/CPU0:NCS-5508(config-CoDSP)#fec ?
  CFEC                 Forward Error Correction C_FEC
  EnhancedHG20         Forward Error Correction Enhanced_HG20
  EnhancedHG7          Forward Error Correction Enhanced_HG7
  EnhancedI4           Forward Error Correction Enhanced_I_4
  EnhancedI7           Forward Error Correction Enhanced_I_7
  EnhancedSD15         Forward Error Correction Soft-Decision 15
  EnhancedSD15DE       Forward Error Correction Soft-Decision 15 with DE
  EnhancedSD20         Forward Error Correction Soft-Decision 20
  EnhancedSD27         Forward Error Correction Soft-Decision 27
  EnhancedSD7          Forward Error Correction Soft-Decision 7
  EnhancedStaircaseDE  Forward Error Correction Enhanced Staircase FEC with DE
  EnhancedSwizzle      Forward Error Correction Enhanced_Swizzle
  OFEC                 Forward Error Correction O_FEC
  Standard             Forward Error Correction Standard
  none                 No Forward Error Correction

詳細疑難排解

本節從光學角度介紹基本的調試/技術。

要檢查的第一件事

檢查光纖是否出現在清單中。如果未顯示光纖，請檢查是否將光纖正確插入到R/S/I/P中，並且使用的是沒有問題的電纜。

++++++++++ show inventory details [18:06:56.572 UTC Thu Apr 06 2023] ++++++++++

NAME: "0/RP0", DESCR: "NC55A1 24Q6H SS Route Processor Card"
PID: NCS-55A1-24Q6H-SS , VID: V01, SN: FOC2528002Q
MFG_NAME: Cisco Systems, Inc., SNMP_IDX: 1 , Type: Module
PN: 73-20057-02

NAME: "TenGigE0/0/0/0", DESCR: "Cisco SFP+ 10G ZR Pluggable Optics Module"
PID: SFP-10G-ZR , VID: V02, SN: BD211218N1T
MFG_NAME: CISCO-PRE , SNMP_IDX: 2129921 , Type: Module
PN: TSFP10G-1558.17

NAME: "TenGigE0/0/0/1", DESCR: "Cisco SFP+ 10G ZR Pluggable Optics Module"
PID: SFP-10G-ZR , VID: V02, SN: BD211218N3K
MFG_NAME: CISCO-PRE , SNMP_IDX: 2134017 , Type: Module
PN: TSFP10G-1557.36

RP/0/RP0/CPU0:NCS-5501#show controllers te0/0/0/14 internal
Internal data for interface: TenGigE0/0/0/14
Subport Number      : 255
Port Number         : 14 *
Bay Number          : 0 *
Board Type          : 0x60020201 *
Port Type           : 10GE *
Bandwidth(Kbps)     : 10000000 *
Transport mode      : LAN *
BIA MAC addr        : 008a:9617:4838
Oper. MAC addr      : 008a:9617:4838
Egress MAC addr     : 008a:9617:4838
Port Available      : true *
Status polling is   : disabled *
Status events are   : disabled
I/F Handle          : 0x00000158 *
Cfg Link Enabled    : enabled
H/W Tx Enable       : yes
MTU                 : 1514 *
H/W Speed           : 10 Gbps *
H/W Duplex          : Full *
H/W Loopback Type   : None *
FEC                 : Not Configured *
H/W FlowCtrl Type   : Disabled *
H/W AutoNeg Enable  : Off *
H/W Link Defects    : No Fault *
Link Up             : yes *
Link Led Status     : Green ON *
Pluggable Present   : Yes *
Pluggable Type      : SFP+ 10G CU3M
Pluggable PID       : SFP-H10GB-CU3M *
Pluggable Compl.    : Failed - Bad Vendor CRC

如果未辨識收發器，請檢查此處是否支援收發器型別：https://tmgmatrix.cisco.com/。

供應商CRC必須正確。

檢查訊號強度。

收發器需要數字光纖監控(DOM)支援。

RP/0/RP0/CPU0:BRU-SPCORE-P2#show controllers hundredGigE0/0/0/10 phy

QSFP8636 EEPROM port: 10
        Xcvr Type: QSFP28
        Ext Type: 3.5W, CLEI, TX CDR, RX CDR,
        Connector Type: MPO
        Ethernet Compliance Codes: 100G BASE-SR4,
        BR, nominal: 25500 Mbps
        Length SMF: 0KM, OM3: 70M, OM2: 0M, OM1: 0M, Cable: 50M
        Deice Tech: 850nm VCSEL,
        Vendor Name: CISCO-FINISAR
        Vendor OUI: 00.90.65
        Vendor Part Number: FTLC9555REPM-C1   (rev.: A )
        Wavelength: 850.000 nm
        Wavelength Tolerance: 10.000 nm
        Vendor Serial Number: FIW2638016W
        Date Code (yy/mm/dd): 22/09/13  lot code:
        Diagnostic Monitoring Type: RX Avg, TX,
        Enhanced Options: Init Complete Flag Impl,
        Extended Module Codes:
        Options:
        L-Tx/Rx LOS:
        L-Tx Fault:
        L-Tx/Rx LOL:
        Module DDM: Volt, Temp, TX Power, TX Bias, RX Power,
MSA Data (Lower Memory)
0x0000: 11 07 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0010: 00 00 00 00 00 00 1d 75 : 00 00 81 2f 00 00 00 00
0x0020: 00 00 20 b6 2e 9a 2d ba : 27 44 0d ed 0e 0c 0e 0c
0x0030: 0e 0c 28 46 2a dc 29 1f : 2a 72 00 00 00 00 00 00
0x0040: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0050: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 01 00 00
0x0060: 00 00 ff 00 00 00 00 00 : 00 01 1f 00 00 00 00 00
0x0070: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00


MSA Data (Upper Memory Page 00)
0x0080: 11 dc 0c 80 00 00 00 00 : 00 00 00 05 ff 00 00 23
0x0090: 00 00 32 00 43 49 53 43 : 4f 2d 46 49 4e 49 53 41
0x00a0: 52 20 20 20 00 00 90 65 : 46 54 4c 43 39 35 35 35
0x00b0: 52 45 50 4d 2d 43 31 20 : 41 20 42 68 07 d0 46 ef
0x00c0: 02 07 ff f6 46 49 57 32 : 36 33 38 30 31 36 57 20
0x00d0: 20 20 20 20 32 32 30 39 : 31 33 20 20 0c 10 68 3a
0x00e0: 00 00 02 3c c0 ff c6 b6 : 3b 05 e6 30 86 bb 80 05
0x00f0: df 65 71 00 00 00 00 00 : 00 00 00 00 79 eb c1 06

        CLEI Code: CMUIATKCAA
        Part Number: FTLC9555REPM-C1 (ver.: V03)
        Product Id: QSFP-100G-SR4-S

MSA Data (Upper Memory Page 02)
0x0180: 43 4d 55 49 41 54 4b 43 : 41 41 31 30 2d 33 31 34
0x0190: 32 2d 30 33 56 30 33 20 : 01 00 00 31 20 20 20 20
0x01a0: 20 66 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x01b0: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 aa aa
0x01c0: 51 53 46 50 2d 31 30 30 : 47 2d 53 52 34 2d 53 20
0x01d0: 20 20 20 20 00 00 00 00 : 00 00 00 00 00 00 00 65
0x01e0: 31 33 33 39 39 37 31 36 : 31 d8 00 00 00 00 00 00
0x01f0: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00

        Module
        Thresholds:                   Alarm High          Warning High          Warning Low          Alarm Low
              Temperature:            +75.000 C             +70.000 C              +0.000 C              -5.000 C
                  Voltage:           3.630 Volt            3.465 Volt            3.135 Volt            2.970 Volt

        Temperature: +29.457 C
        Voltage: 3.315 Volt

        Lanes
        Thresholds:                   Alarm High          Warning High          Warning Low          Alarm Low
                     Bias:         15.000 mAmps          14.000 mAmps           3.000 mAmps           2.000 mAmps
           Transmit Power:  3.46740 mW (5.40004 dBm)   1.73780 mW (2.40000 dBm)   0.14450 mW (-8.40132 dBm)   0.05750 mW (-12.40332 dBm)
            Receive Power:  3.46740 mW (5.40004 dBm)   1.73780 mW (2.40000 dBm)   0.09330 mW (-10.30118 dBm)   0.03720 mW (-14.29457 dBm)

        TxRxIOMagId:

        RxOpAmpSupprt:

                 Lane            Temp            Bias                   Tx Power                   Rx Power

                    0             N/A     7.130 mAmps   1.03100 mW (0.13259 dBm)   1.18990 mW (0.75510 dBm)
                    1             N/A     7.192 mAmps   1.09760 mW (0.40444 dBm)   1.19300 mW (0.76640 dBm)
                    2             N/A     7.192 mAmps   1.05440 mW (0.23005 dBm)   1.17110 mW (0.68594 dBm)
                    3             N/A     7.192 mAmps   1.08020 mW (0.33504 dBm)   1.00480 mW (0.02080 dBm)

MSA Data (Upper Memory Page 03)
0x0200: 4b 00 fb 00 46 00 00 00 : 00 00 00 00 00 00 00 00
0x0210: 8d cc 74 04 87 5a 7a 76 : 00 00 00 00 00 00 00 00
0x0220: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0230: 87 72 01 74 43 e2 03 a5 : 1d 4c 03 e8 1b 58 05 dc
0x0240: 87 72 02 3f 43 e2 05 a5 : 00 00 00 00 00 00 00 00
0x0250: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0260: a6 0f 00 00 00 00 00 00 : 00 00 66 66 00 00 33 33
0x0270: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00

使用此命令可驗證是否存在任何問題。

RP/0/RP0/CPU0:BRU-SPCORE-P2#show controllers optics 0/0/0/10 summary

Port                Controller State        Admin State            LED State         Lane   Laser Bias   TX Power     RX Power     Wavelength     Optics Type       Description
                                                                                                          (dBm)        (dBm)        (nm)
------------------  ----------------------  ---------------------  ----------------  -----  ------------ -----------  ----------   -----------    --------------    -----------
Optics 0/0/0/10     Up                      In Service             Green             0      7.1mA        0.12         0.75         850.00         QSFP28-100G-SR4
                                                                                     1      7.2mA        0.41         0.75
                                                                                     2      7.2mA        0.22         0.69
                                                                                     3      7.2mA        0.31         0.02

警報

檢查主題專案的警報。

RP/0/RP0/CPU0:NCS#show alarms brief

--------------------------------------------------------------------------------
Active Alarms for 0/0
--------------------------------------------------------------------------------
Location        Severity     Group            Set Time                   Description                                                                                    
--------------------------------------------------------------------------------
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOS LANE-0 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOS LANE-1 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOS LANE-2 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOS LANE-3 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOL LANE-0 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOL LANE-1 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOL LANE-2 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX LOL LANE-3 ALARM                                              
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-0 LOW ALARM                                        
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-1 LOW ALARM                                        
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-2 LOW ALARM                                        
0/0/CPU0        Major        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-3 LOW ALARM                                        
0/0/CPU0        Minor        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-0 LOW WARNING                                      
0/0/CPU0        Minor        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-1 LOW WARNING                                      
0/0/CPU0        Minor        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-2 LOW WARNING                                      
0/0/CPU0        Minor        Software         04/26/2023 15:50:19 CEST    Optics0/0/0/35 - hw_optics:  RX POWER LANE-3 LOW WARNING                                      
0/0/CPU0        Major        Software         05/02/2023 11:18:17 CEST    Optics0/0/0/26 - hw_optics:  OPTICS Module is not supported on this port                      
0/0/CPU0        Major        Software         05/02/2023 11:18:17 CEST    Optics0/0/0/26 - hw_optics: Port speed not supported on the optics                            
0/0/CPU0        Major        Software         05/02/2023 11:18:23 CEST    Optics0/0/0/26 - hw_optics:  RX LOS LANE-0 ALARM                                              
0/0/CPU0        Major        Software         05/02/2023 11:18:23 CEST    Optics0/0/0/26 - hw_optics:  RX LOS LANE-1 ALARM                          
…

顯示控制器光纖

使用「show controller optics <r/s/i/p>」命令檢查是否檢測到SFP/QSFP。

• 檢查插入的光纖是否正確顯示（檢查PID和VID）。
• 檢查雷射是否啟用。
• 檢查功率水平是否正常。
• 檢查是否出現任何警報/故障。

這是偵測到光纖且正在使用的輸出範例。

檢查「Controller State」（控制器狀態）是「Up」（打開）還是「Down」（關閉）。

檢查雷射狀態是開啟還是關閉。當介面關閉時，會顯示Off狀態。如果實際情況不是這樣，請收集以下資訊：

• show tech-support optics
• show tech-support ofa

RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Controller State: Up
 Transport Admin State: In Service
 Laser State: Off

檢查LED狀態。介面關閉時顯示Off狀態。當介面未關閉時，狀態可以是Down-Yellow或Up-Green。

如果有埠分流：即使有一個子埠處於打開狀態，所有子埠都會顯示綠色。如果至少一個子埠為admin up(no shut)，則所有子埠都顯示黃色。如果所有子埠都處於管理性關閉（關閉）狀態，則Led狀態為關閉。

檢查FEC狀態。某些平台型別可能停用了FEC。則不會顯示FEC零件。如果在PHY上啟用了FEC，則它必須顯示PHY FEC狀態，而不是NPU。如果FEC狀態不正確，請檢查show controller <speed> <r/s/i/p>中的FEC狀態。

閱讀本文以瞭解有關FEC的詳細資訊：瞭解FEC及其在思科光纖中的實施

下載此表以瞭解每個思科光纖的FEC型別的詳細資訊：https://www.cisco.com/c/dam/en/us/products/se/2022/4/Collateral/fec-summary-table.pdf

檢查「Detected Alarms」（檢測到的警報）旁邊是否出現任何警報。如果出現鏈路問題，請檢查此處是否顯示任何RX-LOS/RX-LOL/TX-LOS/TX-LOL警報，或是在鏈路抖動時顯示介面和時間戳的「show alarms brief/history」中顯示。

如果是RX警報，請檢查對等體是否有TX警報。如果對等裝置有TX警報，請轉到下一步。如果沒有對等TX警報，請嘗試重新連線電纜和/或可插拔專案。如果需要，請嘗試用另一個替換它們。

檢查TX電源。如果埠預計為Up，但功率為-40 Tx，請轉至下一步。檢查RX電源

如果埠預期為Up，但具有-40dBm Rx功率，請檢查對等體是否具有TX警報。

如果對等裝置沒有TX警報，請嘗試重新連線電纜和/或可插拔專案。如果需要，請嘗試用另一個替換它們。   

RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/13

 Controller State: Down
 Transport Admin State: In Service
 Laser State: Off
         Optics not present
         Optics Type: Unavailable
         DWDM Carrier Info: Unavailable, MSA ITU Channel= Unavailable, Frequency= Unavailable , Wavelength= Unavailable
         TX Power = Unavailable 
         RX Power = Unavailable
LED State: Off
 FEC State: FEC ENABLED
  Optics Status 
              Optics Type: SFP28 25G SR-S
               Wavelength = 850.00 nm 

               Alarm Status:
               -------------               
               Detected Alarms: None 
               LOS/LOL/Fault Status:
               Laser Bias Current = 0.0 mA Actual
               TX Power = -40.00 dBm 
               RX Power = -0.93 

               Performance Monitoring: Disable 
               THRESHOLD VALUES 
               ----------------  
               Parameter                           High Alarm  Low Alarm  High Warning  Low Warning
               ------------------------            ----------  ---------  ------------  ----------- 
               Rx Power Threshold(dBm)                 5.4       -14.2              2.3       -10.3 
               Tx Power Threshold(dBm)                 5.4       -12.4              2.3        -8.4 
               LBC Threshold(mA)                     10.00        2.00             8.00         3.00
               Temp. Threshold(celsius)              75.00       -5.00            70.00         0.00 
               Voltage Threshold(volt)                3.63        2.97             3.46         3.13  
               Polarization parameters not supported by optics 
               Temperature = 28.00 Celsius               Voltage = 3.28 V 

Transceiver Vendor Details
         Form Factor              : SFP28 
         Optics type              : SFP28 25G SR-S
         Name                      : CISCO-AVAGO 
         OUI Number               : 00.17.6a 
         Part Number              : SFBR-725SMZ-CS1
         Rev Number               : 01 
         Serial Number            : AVD2227E1FU 
         PID                       : SFP-25G-SR-S 
         VID                       : V01 
         Date Code(yy/mm/dd) : 18/07/07 

這是未檢測到光纖或未服務時的示例輸出。

RP/0/RP0/CPU0:ios# RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/13

  UTC Controller State: Down
  Transport Admin State: In Service
  Laser State: Off
          Optics not present
          Optics Type: Unavailable 
          DWDM Carrier Info: Unavailable, MSA ITU Channel= Unavailable, Frequency= Unavailable , Wavelength= Unavailable 
          TX Power = Unavailable          RX Power = Unavailable

相干DSP

如果QDD-400G-ZR-S / QDD-400G-ZRP-S的鏈路斷開，同時驗證來自show controller optics的警報和資料，請在show controller coherentDSP <R/S/I/P>中檢查警報。

RP/0/RP0/CPU0:ios#show controllers coherentDSP 0/0/1/0

Port : CoherentDSP 0/0/1/0
Controller State : Up
Inherited Secondary State : Normal
Configured Secondary State : Normal
Derived State : In Service
Loopback mode : None
BER Thresholds : SF = 1.0E-5 SD = 1.0E-7
Performance Monitoring : Enable
Bandwidth : 400.0Gb/s 

Alarm Information:LOS = 0 LOF = 0 LOM = 0
OOF = 0 OOM = 0 AIS = 0IAE = 0 B
IAE = 0 SF_BER = 0
SD_BER = 0 BDI = 0 TIM = 0
FECMISMATCH = 0 FEC-UNC = 0 FLEXO_GIDM = 0
FLEXO-MM = 0 FLEXO-LOM = 0 FLEXO-RDI = 0
FLEXO-LOF = 0 
Detected Alarms : None

如果看到LOS/LOF/BER，請檢查光纖連線、遠端端TX值以及本地端和對等端ZR/ZRP的操作模式。

ZR/ZRP支援多種操作模式。檢視此連結配置指南。

配置模式、FEC、DAC和調制必須與介面配置和對等體配置匹配。

使用以下命令：show optics-driver debug optics port <fp_port> instance <bayinst> location <LC>。

RP/0/RP0/CPU0:ios#show optics-driver debug optics port 0 instance 0 location 0/0/CPU0
flexcoh_hdlr : [0x0]
R_S_I_P : [0.0.1.0]
module_type : [400G-ZRPLUS:Cisco-Qualified-Module]
Traffic-Setup : [Requested/Programmed]
client_rate : [100_GAUI_2_KP4_FEC/100_GAUI_2_KP4_FEC]                      <- needs to match the configured interface speed
trunk_rate : [400G Muxponder/400G Muxponder] line_fec_mode : [oFEC/oFEC]   <- needs to match the peer end for link up
dac_rate : [1x1.25 => pulse_shaping On/1x1.25 => pulse_shaping On]         <- needs to match the peer end for link up
modulation : [16QAM/16QAM]                                                 <- needs to match the peer end for link up
framing_format : [400G_ZR/400G_ZR]
framing_mode : [Enhanced/Enhanced]
hw_cfg_in_progress : [False]
hw transactions : [3]
polling enabled : [True]
pm_notify enabled : [True]
alarms_notify enabled : [True]
sdk laser oper state : [Enabled]
sdk hw laser oper state : [Enabled]
hw laser oper state : [Enabled]
sdk channel-frequency : [1931000]
hw channel-frequency : [1931000]
sdk tx-power : [-100 0.1dBm]
hw tx-power : [-113 0.1dBm]
hw tx-power-range : [-2289, -65135 0.01dBm]
sdk cd-min : [-13000]hw cd-min : [-13000]
sdk cd-max : [13000]hw cd-max : [13000]
sdk baud-rate : [60.138546] 
hw baud-rate : [60.138546]
sdk hw thresholds : [Valid]
config-thresh-flags : [0x0]
trf-cfg-lsr-pm-flags : [0x0]
polling_mask : [0xf]
is_fw_dl_in_progress : [False]
is_fw_commit_in_progress: [False]
sdk dsp-internal-loopback: [Disabled]
hw dsp-internal-loopback: [Disabled]
sdk dsp-line-loopback : [Disabled]
hw dsp-line-loopback : [Disabled]
Flexcoh SDK API execution status
--------------------------------------------------------------------------------------------------
traffic | tx-power | cd-min | cd-max | frequency | laser-set | pm-set | alarm-set | poll_set |
==================================================================================================
Success | Success  | Success| Success| Success   | Success   | Success| Success   | Success  |      <- No failure to be seen in any of the status
--------------------------------------------------------------------------------------------------

Show Controllers PHY

為正確的介面收集此資訊。此指令會轉儲EEPROM資訊。

RP/0/RP0/CPU0:ios#show controllers tenGigE 0/0/1/0 phy

SFP EEPROM port: 32
Xcvr Type: SFP
Xcvr Code: SFP+ 10G SR
Encoding: 64B66B
Bit Rate: 10300 Mbps
Link Reach 50u fiber: 80 meter
Link Reach 62.5u fiber: 20 meter
Vendor Name: CISCO-SUMITOMO
Vendor OUI: 00.00.5f
Vendor Part Number: SPP5100SR-C5 (rev.: A )
Laser wavelength: 850 nm (fraction: 0.00 nm)
Optional SFP Signal: Tx_Disable, Tx_Fault, LOS
Vendor Serial Number: SPC17050AZ0
Date Code (yy/mm/dd): 13/01/31 lot code: MA
Diagnostic Monitoring: DOM, Int. Cal.,
Enhanced Options: SW RX LOS Mon., SW TX Fault Mon, SW TX Disable, Alarm/Warning Flags

MSA Data
0x0000: 03 04 07 10 00 00 00 00 : 00 00 00 06 67 00 00 00
0x0010: 08 02 00 1e 43 49 53 43 : 4f 2d 53 55 4d 49 54 4f
0x0020: 4d 4f 20 20 00 00 00 5f : 53 50 50 35 31 30 30 53
0x0030: 52 2d 43 35 20 20 20 20 : 41 20 20 20 03 52 00 e6
0x0040: 00 1a 00 00 53 50 43 31 : 37 30 35 30 41 5a 30 20
0x0050: 20 20 20 20 31 33 30 31 : 33 31 4d 41 68 f0 03 7a
0x0060: 00 00 0b ea 11 8a 3a 43 : 9d 9c 2b 0d 84 89 fd c5
0x0070: a4 0e 5b 00 00 00 00 00 : 00 00 00 00 8b 64 8d fc

Thresholds: Alarm High Warning High Warning Low Alarm Low
Temperature: +75.000 C +70.000 C +0.000 C -5.000 C
Voltage: 3.630 Volt 3.465 Volt 3.135 Volt 2.970 Volt
Bias: 10.500 mAmps 9.000 mAmps 2.500 mAmps 2.000 mAmps
Transmit Power: 1.47910 mW (1.69998 dBm) 0.74130 mW (-1.30006 dBm) 0.18620 mW (-7.30020 dBm) 0.07410 mW (-11.30182 dBm)
Receive Power: 1.58490 mW (2.00002 dBm) 0.79430 mW (-1.00015 dBm) 0.10230 mW (-9.90124 dBm) 0.04070 mW (-13.90406 dBm)
Temperature: 24.012
Voltage: 3.304 Volt
Tx Bias: 0.000 mAmps
Tx Power: 0.000 mW (<-40.00 dBm)
Rx Power: 0.000 mW (<-40.00 dBm)
Oper. Status/Control: Tx Disabled, Rx Rate Select, LOS,
EEPROM Memory (A2 lower)
0x0100: 4b 00 fb 00 46 00 00 00 : 8d cc 74 04 87 5a 7a 75
0x0110: 14 82 03 e8 11 94 04 e2 : 39 c7 02 e5 1c f5 07 46
0x0120: 3d e9 01 97 1f 07 03 ff : 00 00 00 00 00 00 00 00
0x0130: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0140: 00 00 00 00 3f 80 00 00 : 00 00 00 00 01 00 00 00
0x0150: 01 00 00 00 01 00 00 00 : 01 00 00 00 00 00 00 27
0x0160: 18 03 81 13 00 00 00 00 : 00 00 00 00 00 00 b2 00
0x0170: 00 40 00 00 00 40 00 00 : 00 00 00 00 00 00 00 00

CLEI Code: COUIA8NCAA
Part Number: 10-2415-03 (ver.: V03 )
Temp/Alarm/Power Flags: COM, commercial 0C to 70C
Minimum Temperature: 0
Maximum Temperature: 70
Calibration Constants: LBC Scale, Temperature, Laser bias current, Output power,
Product Id: SFP-10G-SR
EEPROM Memory (A2 upper)
0x0180: 43 4f 55 49 41 38 4e 43 : 41 41 31 30 2d 32 34 31
0x0190: 35 2d 30 33 56 30 33 20 : 01 00 46 00 00 00 00 c6
0x01a0: 00 00 00 00 00 00 00 00 : 00 00 85 99 8f 00 a8 3b
0x01b0: d4 4b 00 00 1e 00 0a ff : 16 93 0f 8e 00 00 aa aa
0x01c0: 53 46 50 2d 31 30 47 2d : 53 52 20 20 20 20 20 20
0x01d0: 20 20 20 20 32 33 00 00 : 00 00 00 00 00 00 00 35
0x01e0: 14 1b 20 20 20 26 20 26 : 00 00 00 00 00 00 00 00
0x01f0: 00 00 00 00 00 fb 00 00 : ff ff ff ff 00 00 00 aa


MSA Data LOWER PAGE (QSA)
0x0000: 0d 00 02 01 00 00 01 00 : 00 00 00 00 00 00 00 00
0x0010: 00 00 00 00 00 01 00 00 : 00 00 00 00 00 00 00 00
0x0020: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0030: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0040: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0050: 00 00 44 32 50 30 0f 00 : 00 00 00 00 00 00 00 00
0x0060: 00 00 00 00 01 01 00 00 : 00 00 00 00 00 00 00 00
0x0070: 00 00 00 00 00 00 00 00 : 00 00 00 00 00 00 00 00

MSA Data UPPER PAGE (QSA)
0x0080: 0d 9b 80 00 00 00 00 00 : 00 00 00 00 00 00 00 00
0x0090: 00 00 00 00 43 49 53 43 : 4f 2d 44 4e 49 20 20 20
0x00a0: 20 20 20 20 00 30 30 30 : 43 41 5a 41 44 45 52 4f
0x00b0: 2d 30 32 20 20 20 20 20 : 30 33 00 00 00 00 46 32
0x00c0: 00 00 00 00 44 54 59 32 : 32 32 31 30 36 47 38 20
0x00d0: 20 20 20 20 32 30 31 38 : 30 35 33 30 00 00 f2 c2
0x00e0: f2 00 07 d0 45 c2 18 57 : 2b 29 67 3f 51 03 49 be
0x00f0: 37 c4 da 00 00 00 00 00 : 00 00 00 00 81 96 b0 b1

NPU

本部分介紹介面直接連線到NPU的具體情況。所以，沒有PHY。這些連線埠是無PHY連線埠。

RP/0/RP0/CPU0:ios#show controllers twentyFiveGigE 0/0/0/12 (partial output)
Operational data for interface TwentyFiveGigE0/0/0/12: 

State:    Administrative state: disabled                ==> Check if admin state display is correct
    Operational state: Down (Reason: Link is shutdown)  ==> Check if link state display is correct. If interface is down with Remote fault/Link Loss (local fault), verify the peer.
MAC address information:
    Operational address: fc58.9a01.8e10
    Burnt-in address: fc58.9a01.8e10

Autonegotiation disabled.
Priority flow control information for interface TwentyFiveGigE0/0/0/12:
    Forward error correction: Standard (Reed-Solomon)  ==> Check if FEC status is correct.

RP/0/RP0/CPU0:ios#show controllers tenGigE 0/0/0/14
    Operational data for interface TenGigE0/0/0/14:

State:    Administrative state: enabled
    Operational state: Down (Reason: Link loss or low light, no loopback) ==> This router has a Local Fault/Down.
    LED state: Yellow On

RP/0/RP0/CPU0:ios#show controllers tenGigE 0/0/0/15
    Operational data for interface TenGigE0/0/0/15:
    State:
        Administrative state: enabled
        Operational state: Down (Reason: Remote Fault)   ==> The peer has a Fault
        LED state: Yellow On

摘要

• 檢查介面的管理狀態是否為down。如果是，請使用命令no shut on interface將其置於admin up狀態。
• 檢查路由器和對等裝置上的FEC狀態。如果有任何不匹配的情況，請嘗試更正它們。
• 檢查路由器和對等裝置上的自動協商狀態。如果有任何不匹配的情況，請嘗試更正它們。
• 如果已正確配置FEC和自動協商，請在show controller optics輸出中檢查路由器和對等體上的警報狀態。

RX-LOS、RX-LOL：訊號接收方向的問題。

TX-LOS、TX-LOL：SFP/QSFP從NPU或PHY接收的訊號存在問題。

如果存在具有RX-LOL/RX-LOS的鏈路斷開/抖動：

• 檢查對等體是否具有TX-LOS/TX-LOL。
• 如果沒有TX警報，請嘗試更改電纜/可插拔(SFP/QSFP)。

如果存在具有TX-LOL/TX-LOS的鏈路斷開/抖動：

您可以應用外部環回以排除遠端對等體，並將光纖應用到遠端對等體。在本機使用光纖纜線將傳輸(Tx)訊號實際迴路到接收(Rx)連線埠。或者，使用衰減器來實現此目的：

RP/0/RSP0/CPU0:NCS(config)#int Hu0/3/0/31
RP/0/RSP0/CPU0:NCS(config-if)#loopback ?
external Enable external loopback (requires loopback connector)
internal Enable internal loopback
line Enable line loopback
RP/0/RSP0/CPU0:NCS(config-if)#loopback external ?
<cr>
RP/0/RSP0/CPU0:NCS(config-if)#loopback external
RP/0/RSP0/CPU0:NCS(config-if)#commit

可以在路由器和對等體上應用環回內部配置，以透過繞過光纖/光纖來檢驗光纖。這意味著如果介面仍未啟動，則表明問題不是光學部件的問題！

RP/0/RP0/CPU0:BRU-SPCORE-P2(config)#int hundredGigE 0/0/0/10
RP/0/RP0/CPU0:BRU-SPCORE-P2(config-if)#loopback internal ?
  <cr>
RP/0/RP0/CPU0:BRU-SPCORE-P2(config-if)#loopback internal
RP/0/RP0/CPU0:BRU-SPCORE-P2(config-if)#commit

收集記錄

路由器和對等體上的這些命令都可能會提供問題的原因。

• show ip interface brief
• show alarms brief 

• show controller optics <r/s/i/p>
• show tech-support optics

這會顯示警報、LED狀態、鐳射狀態和其他光纖資訊

• show controller <tengige/hundredgige/other> <r/s/i/p> internal of interface with the issue。

顯示FEC、AN、Up/Down、Local fault/Remote fault等。

• show controllers npu voq-usage interface all instance all location all

提供前面板埠到pp埠、npu和核心對映。

介面問題的完整日誌集合：

• 顯示版本
• show running-config
• show install active
• show platform
• show tech-support ethernet platform location 0/x/CPU0
• show tech-support ethernet interfaces
• show tech-support ethernet controllers location 0/x/CPU0
• show tech-support dpa location 0/x/CPU0
• show tech-support of a location 0/x/CPU0
• show tech-support optics location 0/x/CPU0
• show tech-support consistent location 0/x/CPU0
• show tech-support pfi location all
• show tech-support qos platform location 0/x/CPU0
• show tech-support fabric
• show controllers npu voq-usage interface all instance 0 location all
• show optics trace all
• show ethernet infra trace location 0/x/cpu0
• show ethernet v-ether trace location 0/x/CPU0
• show vether-ea trace all location 0/x/CPU0
• show portmapper trace all location 0/0/CPU0