R1, R2, R3, and R4 run OSPF, and the area ID is as shown in the figure, then () will generate Type-3 LSA. R1 Area 0 R2 Area 1 R3 Area 1 R4 Area 2 OSPF

In OSPF, Type-3 Summary LSAs are generated by Area Border Routers (ABRs) to advertise summary routes between different OSPF areas. According to the provided diagram: R2 connects Area 0 and Area 1, thus R2 is an ABR. R3 connects Area 1 and Area 2, thus R3 is an ABR. Therefore…

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Question

R1, R2, R3, and R4 run OSPF, and the area ID is as shown in the figure, then () will generate Type-3 LSA.
R1
Area 0
R2
Area 1
R3
Area 1
R4
Area 2
OSPF

Explanation

In OSPF, Type-3 Summary LSAs are generated by Area Border Routers (ABRs) to advertise summary routes between different OSPF areas. According to the provided diagram:

R2 connects Area 0 and Area 1, thus R2 is an ABR.
R3 connects Area 1 and Area 2, thus R3 is an ABR. Therefore, R2 and R3 will generate Type-3 LSAs.

Topics

#OSPF#Type-3 LSA#ABR#multi-area OSPF

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