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300-615 · Question #277

Refer to the exhibit. Two Cisco Nexus 9000 Series Switches fail to establish OSPF neighborship. Which action resolves the issue?

The correct answer is A. Change interface 1/11 network type as Broadcast. OSPF neighbors on a multiaccess link must share the same network type. Here, Eth1/10 on SW1 is running as BROADCAST while Eth1/11 on SW2 is running as P2P, so they never form an adjacency. Changing Eth1/11's OSPF network type to BROADCAST (for example with ip ospf network…

Network

Question

Refer to the exhibit. Two Cisco Nexus 9000 Series Switches fail to establish OSPF neighborship. Which action resolves the issue?

Exhibits

300-615 question #277 exhibit 1
300-615 question #277 exhibit 2

Options

  • AChange interface 1/11 network type as Broadcast.
  • BEnable interface VLAN 20 on SW2.
  • CSet cost of interface Eth1/10 to 40.
  • DConfigure Loopback0 as passive interface.

How the community answered

(39 responses)
  • A
    82% (32)
  • B
    3% (1)
  • C
    10% (4)
  • D
    5% (2)

Explanation

OSPF neighbors on a multiaccess link must share the same network type. Here, Eth1/10 on SW1 is running as BROADCAST while Eth1/11 on SW2 is running as P2P, so they never form an adjacency. Changing Eth1/11's OSPF network type to BROADCAST (for example with ip ospf network broadcast under the interface) aligns both ends and allows the neighbor relationship to

Topics

#OSPF#network type#neighbor adjacency#Nexus 9000

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