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如何执行环回测试以确定交换机ISL上的故障端口?

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适用场景

  • CN1610集群网络交换机。
  • ISL端口上的硬件问题描述。

问题描述

  • 两个集群互连交换机上的其中一个ISL链路出现或关闭。

(CN1610switch1) #show port 0/15,0/16

         Admin    Physical   Physical   Link   Link   LACP   Actor
Intf    Type   Mode    Mode     Status    Status Trap   Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/15    PC Mbr Enable   10G Full   10G Full   Up    Enable  Enable long
0/16    PC Mbr Enable   10G Full          Down  Enable  Enable long

 

(CN1610switch2) #show port 0/15,0/16

         Admin    Physical   Physical   Link   Link   LACP   Actor
Intf    Type   Mode    Mode     Status    Status Trap   Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/15    PC Mbr Enable   10G Full   10G Full   Up    Enable  Enable long
0/16    PC Mbr Enable   10G Full          Down  Enable  Enable long

  • 不能仅仅通过物理检查或日志分析来确定问题描述 所在的交换机。
  • 环回测试可用于调查是由电缆故障还是由特定交换机ISL端口上的SFP引起的。
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