Which two methods can lower the OSPF memory usage?

You are implementing OSPF as the IGP using a single OSPF area design. The router memory
usage for OSPF is too high. Which two methods can lower the OSPF memory usage? (Choose
two.)

You are implementing OSPF as the IGP using a single OSPF area design. The router memory
usage for OSPF is too high. Which two methods can lower the OSPF memory usage? (Choose
two.)

A.
Enable OSPF synchronization

B.
Implement multi-area OSPF

C.
Enable OSPF sham links to reduce the number of LSAs

D.
Implement route summarization on the ABRs

E.
Enable route leaking between Level 1 and Level 2 areas

Explanation:

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jslaven

jslaven

Confused! I interpret “two methods” in the question as a method 1 or method 2, not method 1 and 2.

If it’s a single OSPF area design, how can route summarization be implemented on the ABRs? There are zero ABRs.

If I implement multi-area OSPF only then I can implement route summarization on the ABR.

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