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HPE6-A45 · Question #167

OSPF Area 1 has two ABRs. One ABR is configured with this range for Area 1: 10.10.0.0/16. The other ABR is configured with this range for Area 1: 10.10.0.0/17. Which type of issue occurs due to this…

The correct answer is C. The ABRs advertise routes inconsistently, and they could potentially introduce a routing loop. See the full explanation below for the reasoning.

Question

OSPF Area 1 has two ABRs. One ABR is configured with this range for Area 1: 10.10.0.0/16. The other ABR is configured with this range for Area 1: 10.10.0.0/17. Which type of issue occurs due to this mismatch?

Options

  • AThe ABRs lose routing entropy and cannot route traffic between each other at all.
  • BThe ABRs create a discontinuous area and disrupt intra-area routing between devices within Area 1.
  • CThe ABRs advertise routes inconsistently, and they could potentially introduce a routing loop.
  • DThe ABRs lose adjacency in Area 1 and must route all traffic to each other through Area 0.

How the community answered

(35 responses)
  • A
    6% (2)
  • B
    14% (5)
  • C
    77% (27)
  • D
    3% (1)

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