由于交换机端 SFP 故障，Brocade 交换机端口出现抖动并脱机

• 端口状态为 In_sync

 254  12   30   68fe40   id   N32    In_Sync    FC

• 端口显示为离线

portshow 254
portDisableReason: None
portCFlags: 0x1
portFlags: 0x4041    PRESENT U_PORT LED
LocalSwcFlags: 0x0
portType:  26.0
portState: 2   Offline  

• 结构日志显示端口已多次抖动

15:16:55.961101 SCN Port Offline;rsn=0x4,g=0x3b7e       A2,P0  A2,P0  254  NA   
15:16:55.961107 *Removing all nodes from port         A2,P0  A2,P0  254   NA   
15:17:40.649127 SCN LR_PORT(0);g=0x3b7e            A2,P0  A2,P0  254   NA   
15:17:40.695392 SCN Port Online; g=0x3b7e,isolated=0     A2,P0  A2,P1  254   NA   
15:17:40.695851 Port Elp engaged               A2,P1  A2,P0  254   NA   
15:17:40.695865 *Removing all nodes from port         A2,P0  A2,P0  254   NA   
15:17:40.696094 SCN Port F_PORT                A2,P1  A2,P0  254   NA   
16:02:58.997554 SCN Port Offline;rsn=0x4,g=0x3b80       A2,P0  A2,P0  254   NA   
16:02:58.997560 *Removing all nodes from port         A2,P0  A2,P0  254   NA   
16:02:59.008547 SCN LR_PORT(0);g=0x3b80            A2,P0  A2,P0  254   NA 

• sfpshow 显示端口具有较低的 Tx 值

Slot 12/Port 30:
=============
Identifier:  3   SFP
Connector:   7   LC
Transceiver: 6804404000000000 8,16,32_Gbps M5 sw Short_dist
Encoding:   6   64B66B 
Vendor Name: BROCADE      
Vendor OUI:  00:05:1e
Vendor PN:   57-1000333-01  
BR Min:    0   
Serial No:   JAF418510000PG1 
Date Code:   181219  
Temperature: 50    Centigrade 
Current:    6.542   mAmps 
Voltage:    3325.5  mVolts 
RX Power:   -2.9   dBm (518.3uW) 
TX Power:   -40.0   dBm (0.1   uW)

• Errdump 可能显示以下内容： 
  
  2025/06/23-22:58:05 (IST), [MAPS-1003], 881081, SLOT 2 | FID 128 | PORT 5/22, WARNING, NTTC_X6_UAT_105_FAB1, slot5 port22-Storage..PMAX_1144_c1P12.(SHARED_BAU.IBM PowerVIOs-, U-Port 5/22, Condition=ALL_PORTS(LOSS_SIGNAL/min>3), Current Value:[LOSS_SIGNAL, 7 LOS], RuleName=defALL_PORTSLOSS_SIGNAL_3, Dashboard Category=Port Health, Quiet Time=None."
• Porterr 显示报告链接失败错误

/fabos/cliexec/porterrshow :
          frames        enc     crc     crc     too     too     bad     enc    disc    link    loss    loss    frjt    fbsy     c3timeout     pcs      uncor
        tx       rx      in     err     g_eof   shrt    long    eof     out    c3      fail    sync    sig                      tx      rx      err     err
 254:    5.0k    5.0k    0       0       0       0       0       0     156       0       2.0k  234       3       0       0       0       0       0       0