300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

By Cisco · Question Mode

QuestionQ477

Layer 3 Technologies

A new site has been added to an OSPF network using area 2. Area 2 is connected only to area 1 in this OSPF network. Area 1 is used to connect area 1 to the backbone area 0.

Should full connectivity to the networks in area 2 from area 0 be expected in this scenario?

  • A Yes, by default there will be full connectivity.
  • B No, you will need to redistribute the area 2 routes into area 0.
  • C No, a virtual link is needed to logically connect area 2 info area 0.
  • D Yes, but area 2 will need to be configured as a stub area.
Explanation

Every non-backbone OSPF area must be connected to Area 0, either physically or through a logical virtual link. Because Area 2 is attached only through non-backbone Area 1, a virtual link through Area 1 is required to logically connect Area 2 to the backbone. The transit area for a virtual link must have full routing information and cannot be a stub area.

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