You have configured an OSPF stub area. The routes in the stub area require external reachability. Which statement explains how OSPF meets this requirement?

The correct answer is D. The ABR will generate a 0.0.0.0/0 default route in the area. Reachability for routes external to OSPF is achieved via a 0/0 default route injected by the ABR. https://forums.juniper.net/jnet/attachments/jnet/Learning/58/2/AJNR_Module02_OSPF-Stub_5-1-

MPLS

Question

Options

AThe ABR will generate a 0.0.0.0/0 martian route in the area.
BThe ABR will flood Type 5 LSAs into the area.
CThe ABR will flood Type 7 LSAs into the area.
DThe ABR will generate a 0.0.0.0/0 default route in the area.

How the community answered

(19 responses)

A
5% (1)
B
11% (2)
C
5% (1)
D
79% (15)

Explanation

Reachability for routes external to OSPF is achieved via a 0/0 default route injected by the ABR. https://forums.juniper.net/jnet/attachments/jnet/Learning/58/2/AJNR_Module02_OSPF-Stub_5-1-

Topics

#OSPF stub area#default route#Type 5 LSA#ABR

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