300-420 · Question #29
300-420 Question #29: Real Exam Question with Answer & Explanation
The correct answer is A: Use Bidirectional Forwarding Detection. Network convergence is the time that is needed for the network to respond to events. One of the significant factors in routing convergence is the detection of link or node failure This is where BFD comes in to play. The default OSPF LSA propagation timers are quite conservative.
Question
Which two steps can be taken to improve convergence in an OSPF network? (Choose two.)
Options
- AUse Bidirectional Forwarding Detection
- BMerge all the areas into one backbone area
- CTune OSPF parameters
- DMake all non-backbone areas stub areas
- ESpan the same IP network across multiple areas.
Explanation
Network convergence is the time that is needed for the network to respond to events. One of the significant factors in routing convergence is the detection of link or node failure This is where BFD comes in to play. The default OSPF LSA propagation timers are quite conservative. Lowering the values of the timers that control OSPF LSA generation can significantly improve OSPF convergence times
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