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当客户端与 vserver 中的数据 lif 之一位于同一子网中时,无法访问 CIFS 共享

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ontap-9
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适用于

  • ONTAP 9
  • CIFS
  • 非对称路由

问题

  • 由于 ONTAP 已经具有与客户端相同子网的数据 LIF,因此即使请求在 ONTAP 上的不同 LIF 上着陆,它也使用相同的子网 LIF 来响应客户端。
  • 由于防火墙正在丢弃响应数据包,因为它具有与请求数据包不同的 MAC,因此客户端未收到响应,并且 CIFS 共享不可访问。

例如:

  • 考虑 vserver 上有两个 lif,如下所示:

cdot_vsim_9_8::> net int show -vserver vs1
  (network interface show)
       Logical   Status    Network       Current     Current Is
Vserver    Interface  Admin/Oper Address/Mask     Node      Port   Home
----------- ---------- ---------- ------------------ ------------- ------- ----
vs1
      lif1     up/up   10.80.70.150/24    node1
                                   e0c    true
       lif2      up/up  10.80.96.11/24    node1
                                   e0c    true

 

  • Client_A IP 是 "10.80.70.92/24" 与 "lif1" 在同一子网中,如上所示。
  • 现在,如果 client_A 在 "lif2" 上发送请求,ONTAP 将使用 "lif1" 进行响应。
  • 这被称为非对称路由,其行为在文章中进行了解释。
  • 由于响应在防火墙中被丢弃,客户端将看不到响应,CIFS 共享将无法访问。

注:要检查 lif ONTAP 用于响应,请捕获数据包跟踪

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