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Question 25

You have created an OSPF neighbor configuration with ArubaOS-CX 8320 VSX and third-party switch. The OSPF peering fails. In the event logs you see the following entries:

Which statement is true about the above events?

The third-party switch should be configured with key chain authentication.

Third-party switch should be configured with MD5 authentication.

The ArubaOS-CX switch requires plain-text authentication with OSPF.

The ArubaOS-CX switch does not expect authentication with OSPF.

Correct Answer: D

The event logs indicate that the OSPF packet received has an 'unexpected authentication type' and that the 'expected authentication type = 0'. This suggests that the ArubaOS-CX switch does not expect any authentication for OSPF, which corresponds to no authentication. Therefore, the correct answer is that the ArubaOS-CX switch does not expect authentication with OSPF.

Discussion

andmekOption: D

D, CX switch is not using OSPF authentication.

K_HOPEOption: D

D - Switch expects no authentication (0 > id for no authentication).