由于电缆故障，在光纤通道目标 HBA 上检测到链路断开

适用于

• ONTAP 9
• FCP

问题

• FC 目标端口链路 - 不稳定/关闭。

• 以下事件记录在 EMS 上的 NetApp：

[Node1: fct_tpd_work_thread_0: scsitarget.slifct.linkBreak:error]: Link break detected on Fibre Channel target HBA 4c with event status 1 , topology type 1, status1 0x0, status2 0x0.
[Node1: fct_tpd_work_thread_0: scsitarget.hwpfct.linkUp:notice]: Link up on Fibre Channel target adapter 4c.

[Node1: fct_tpd_work_thread_0: scsitarget.slifct.wqeError:debug]: FC port 3a has a WQE processing failure of type SLI_ELS_REQ, command PLOGI, subtype x0, with status of 3 and an extended status x4 for NPIV port 0. 
[Node1: fct_tpd_work_thread_0: scsitarget.slifct.wqeError:debug]: FC port 3a has a WQE processing failure of type SLI_ELS_REQ, command PLOGI, subtype x0, with status of 3 and an extended status x1a for NPIV port 0.
[Node1: fct_tpd_work_thread_0: scsitarget.slifct.linkBreak:error]: Link break detected on Fibre Channel target HBA 3a with event status 1 , topology type 1, status1 0x0, status2 0x0. 
[Node1: fct_tpd_work_thread_0: scsitarget.slifct.wqeError:debug]: FC port 3a has a WQE processing failure of type SLI_ELS_REQ, command PLOGI, subtype x0, with status of 3 and an extended status x1a for NPIV port 0."

• 可按照以下步骤隔离此问题：
  • 检查控制器端口状态的 Tx 值是否良好，如果 Tx 信号功率低，则更换 SFP。
  • 检查连接的交换机端口的 SFP 状态，如果交换机端口 Tx 功率低，则更换 SFP。
  • 如果 FC 端两侧的 SFP Tx 功率正常，但任何一侧的 SFP Rx 功率较低，则更换 FC 电缆。
  • 如果涉及配线面板，请对链路组件进行故障排除。
  • 如果两端的 Rx 信号较低，请检查两端之间的配线面板，并尝试不同的端口进行测试

示例：
cluster1::> fcp adapter show -node Node1 -adapter 4c -instance
(network fcp adapter show)

Node: Node1
Adapter: 4c
Description: Fibre Channel Target Adapter 4c (Emulex LPe16000 (LPe16004), rev. 13, 16G)
Physical Protocol: fibre-channel
Maximum Speed: 16
Administrative Status: up
Operational Status: online
Extended Status: ADAPTER UP
Host Port Address: b10140
Firmware Revision: 11.2.219.4
Data Link Rate (Gbit): 16
Fabric Established: true
Fabric Name: xx:xx:xx:xx:xx:xx:xx:xx
Connection Established: ptp
Is Connection Established: true
Mediatype: ptp
Configured Speed: auto
Adapter WWNN: aa:aa:aa:aa:aa:aa:aa:aa
Adapter WWPN: bb:bb:bb:bb:bb:bb:bb:bb
Switch Port: switch1:1/88
Form Factor Of Transceiver: SFP
Vendor Name Of Transceiver: EMULEX
Part Number Of Transceiver: AFBR-57F5MZ-ELX
Revision Of Transceiver:
Serial Number Of Transceiver: AC1544J02X7
FC Capabilities Of Transceiver: 4,8,16 (Gbit/sec)
Vendor OUI Of Transceiver: 00:17:6a
Wavelength In Nanometers: 850
Date Code Of Transceiver: 15:10:26
Validity Of Transceiver: true
Connector Used: LC
Encoding Used: 64B66B
Is Internally Calibrated: true
Received Optical Power: 56.2 (uWatts)
Is Received Power In Range: true
SFP Transmitted Optical Power: 610.0 (uWatts)
Is Xmit Power In Range: true

或

Received Optical Power   587.2 (uWatts)
Is Received Power In Range  true
SFP Transmitted Optical Power 794.2 (uWatts)
Is Xmit Power In Range   true

交换机端口 RX/TX

RX Power:   -3.8   dBm (419.50uW)
TX Power:   -0.8   dBm (823.60 uW)