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NGFW-ENGINEER · Question #126

A network administrator is configuring path monitoring for a primary static route to ensure immediate failback from a backup route. The administrator wants the primary route to become active again wit

The correct answer is B. 0. The preemptive hold time defines how long a router waits after a previously failed path is detected as restored before reinstating the primary static route. A value of 0 means there is zero delay-the route is immediately re-added to the routing table the moment path monitoring co

Configure and Troubleshoot Routing

Question

A network administrator is configuring path monitoring for a primary static route to ensure immediate failback from a backup route. The administrator wants the primary route to become active again without any delay as soon as its path is restored. Which preemptive hold time value should the administrator configure to achieve this immediate failback?

Options

  • A-1
  • B0
  • C1
  • D2

How the community answered

(19 responses)
  • A
    5% (1)
  • B
    89% (17)
  • D
    5% (1)

Explanation

The preemptive hold time defines how long a router waits after a previously failed path is detected as restored before reinstating the primary static route. A value of 0 means there is zero delay-the route is immediately re-added to the routing table the moment path monitoring confirms the path is back up. A value of -1 is not a valid input for this parameter. Values of 1 or 2 would introduce a 1- or 2-minute hold time before failback, which contradicts the requirement for immediate restoration. Setting the hold time to 0 is the correct and only way to achieve instantaneous failback with no waiting period.

Topics

#Path Monitoring#Static Routes#Failback#Preemptive Hold Time

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