Which two statements describe the functionality of OSPF packet-pacing timers? (Choose two.)
A.
The group-pacing timer controls the interval that is used for group and individual LSA refreshment
B.
OSPF flood-pacing timers allow dynamic control of the OSPF transmission queue size
C.
OSPF retransmission-pacing timers allow control of interpacket spacing between consecutive link-state update packets in the OSPF retransmission queue
D.
OSPF retransmission-pacing timers allow control of packet interleaving between nonconsecutive link-state update packets in the OSPF retransmission queue
E.
OSPF flood-pacing timers allow control of interpacket spacing between consecutive link-state update packets in the OSPF transmission queue
The Answer Is:
C, E
This question includes an explanation.
Explanation:
OSPF uses pacing timers to control how quickly it sends LSAs to neighbors to prevent network flooding and CPU spikes:
C. Retransmission-pacing timer: Controls spacing between retransmitted LSAs queued after a lost or unacknowledged transmission.
E. Flood-pacing timer: Controls spacing between consecutive LSAs when flooding new information to peers.
These timers are critical in scaling OSPF in dense or unstable topologies and are key to tuning control plane convergence performance without destabilizing routers.
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