HPE7-A06 · Question #37
You want to use OSPF to advertise a only /16 summary route for the SVIs below to a neighbor in the same area (area 0). Which configuration will achieve this? A. B. C. D.
The correct answer is C. router ospf 1 redistribute connected summary-address 10.1.0.0/16. OSPF can't summarize intra-area routes. To advertise only a /16 to a neighbor in the same area, you must redistribute the connected SVIs as externals and then summarize those externals with summary-address 10.1.0.0/16 under the OSPF process. Options using area 0 range apply only
Question
You want to use OSPF to advertise a only /16 summary route for the SVIs below to a neighbor in the same area (area 0). Which configuration will achieve this? A. B. C. D.
Exhibits
Options
- Arouter ospf 1 redistribute connected area 0 range 10.1.0.0/16
- Binterface vlan 11 ip ospf 1 area 0 ! interface vlan 12 ip ospf 1 area 0 ! interface vlan 13 ip ospf 1 area 0 ! router ospf 1 summary-address 10.1.0.0/16
- Crouter ospf 1 redistribute connected summary-address 10.1.0.0/16
- Dinterface vlan 11 ip ospf 1 area 0 ! interface vlan 12 ip ospf 1 area 0 ! interface vlan 13 ip ospf 1 area 0 ! router ospf 1 area 0 range 10.1.0.0/16
How the community answered
(49 responses)- A4% (2)
- B14% (7)
- C76% (37)
- D6% (3)
Explanation
OSPF can't summarize intra-area routes. To advertise only a /16 to a neighbor in the same area, you must redistribute the connected SVIs as externals and then summarize those externals with summary-address 10.1.0.0/16 under the OSPF process. Options using area 0 range apply only to ABRs summarizing between areas.
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