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HPE7-A08 · Question #58

OSPF peering is configure between HPE Aruba Networking CX 6300 switches utilizing bfd. You've made this configuration on switch B, while switch A is in the default configuration: Which bfd Tx/Rx…

The correct answer is C. Switch A show BFD sessions using 2000ms. BFD negotiates timers by choosing the higher (more conservative) of the two sides’ advertised minimum intervals. Switch B advertises 2000 ms, while Switch A (default) advertises a much lower default value (300 Because BFD must honor the largest minimum interval received from…

Implement and Troubleshoot HPE Aruba Networking CX Switch Solutions

Question

OSPF peering is configure between HPE Aruba Networking CX 6300 switches utilizing bfd. You’ve made this configuration on switch B, while switch A is in the default configuration:

Which bfd Tx/Rx interval values will switch A use for the show bfd session?

Options

  • ASwitch A show BFD sessions using 500ms
  • BSwitch A show BFD sessions using 6000ms
  • CSwitch A show BFD sessions using 2000ms
  • DSwitch A show BFD sessions using 300ms

How the community answered

(55 responses)
  • A
    5% (3)
  • B
    13% (7)
  • C
    60% (33)
  • D
    22% (12)

Explanation

BFD negotiates timers by choosing the higher (more conservative) of the two sides’ advertised minimum intervals. Switch B advertises 2000 ms, while Switch A (default) advertises a much lower default value (300 Because BFD must honor the largest minimum interval received from either peer, both switches will use 2000 ms for their transmit and receive timers.

Topics

#BFD#OSPF#BFD timer negotiation#Tx/Rx intervals

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