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在Rx和Tx均在建议范围内的Brocade交换机端口上报告PCS错误

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brocade<a>2009年342788</a>
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适用场景

Brocade 交换机

问题描述

  •  在交换机端口上观察到PCS错误:
/fabos/cliexec/porterrshow : frames enc crc crc too too bad enc disc link loss loss c3timeout pcs uncor tx rx in err g_eof shrt long eof out c3 fail sync sig tx rx err err 172: 276 165 0 3 2 0 0 1 0 0 2 0 2 0 0 89.7m 0
  • TX和RX功率均在建议范围内: 

=============
Slot  5/Port 28:
=============
RX Power:   -6.9   dBm (689.9uW) ​​​​​​
TX Power:   -1.1   dBm (784.2 uW)

  • 可以尝试以下故障诊断步骤来隔离问题描述:
  1. 重新拔插并清洁连接两端的电缆和SFP
  2. 清除交换机统计信息(statsclear和 slotstatsclear),并观察端口(使用 porterrshow )
  3. 如果pcs错误计数器上的值进一步增加、请 按照以下步骤对缆线和SFP执行硬件故障隔离:
  • 为了对硬件进行故障隔离、请将缆线移至交换机端的下一个可用端口、并观察是否有任何增量:
  • 如果新端口出现问题、请更换电缆/配线板并验证端口计数器
  • 如果问题描述未连接到新端口、请将受影响端口的SFP交换为已知正常工作的SFP、并查看错误是否已解决

 

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