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HP0-Y36 · Question #10

SFP+ failure causes the link between member switches 2 and 3 to no longer operate. MAD was not configured in the IRF stack. How would "MAC persistent" affect the operation of the switches after the…

The correct answer is C. MAC address for the split IRF stack 3&4 will change after six minutes. See the full explanation below for the reasoning.

Question

SFP+ failure causes the link between member switches 2 and 3 to no longer operate. MAD was not configured in the IRF stack. How would "MAC persistent" affect the operation of the switches after the link loss? The following is a sample of display irf output after the failure: [Switch]display irf Switch Role Priority CPU-Mac *+1 Master 1 0023-89d9-af08 2 Slave 1 0023-89d9-b50a 3 Slave 1 0023-89d9-cde3 4 Slave 1 0023-89d9-1fa1
  • indicates the device is the master.
  • indicates the device through which the user logs in.
The Bridge MAC of the IRF is: 0023-89d9-af07 Auto upgrade : no Mac persistent : 6 min Domain ID : 0 [Switch]display irf 3 Slave 1 0023-89d9-cde3 *+4 Slave 1 0023-89d9-1fa1
  • indicates the device is the master.
  • indicates the device through which the user logs in.
The Bridge MAC of the IRF is: 0023-89d9-af07 Auto upgrade : no Mac persistent : 6 min Domain ID : 0

Options

  • AMAC address of the split IRF will not change in either stack 1&2 or stack 3&4.
  • BMAC address for the split IRF stack 3&4 will change immediately.
  • CMAC address for the split IRF stack 3&4 will change after six minutes.
  • DMAC persistent would not be in effect during a split stack.
  • EMAC address for the split IRF stack 1&2 will change after six minutes.

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(28 responses)
  • A
    4% (1)
  • B
    4% (1)
  • C
    79% (22)
  • D
    14% (4)

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