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Exam JN0-649 topic 1 question 18 discussion

Actual exam question from Juniper's JN0-649
Question #: 18
Topic #: 1
[All JN0-649 Questions]

Click the Exhibit button.
Remote branches connect to the corporate WAN through access switches. The access switches connect to access ports on the WAN distribution switch, as shown in the exhibit. L2PT has previously been configured on the tunnel Layer 2 traffic across the WAN. You decide to move the L2PT tunnel endpoints to the access switches. When you apply the L2PT configuration to the access switches, the ports that connect the access switches to the distribution switch shut down.
Which action would solve this problem?

  • A. Configure the links between the access switches and the distribution switch as a trunk port.
  • B. Disable the BPDU block function on the access switches.
  • C. Disable the BPDU block function on the distribution switch.
  • D. Configure a GRE tunnel to encapsulate the L2PT traffic across the WAN.
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by penguin02007 at Dec. 6, 2022, 3:20 a.m.

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harrypogi
1 year, 1 month ago
Selected Answer: A
a correct
upvoted 1 times
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mohdema
1 year, 11 months ago
Selected Answer: A
Access interfaces in an L2PT-enabled VLAN should not receive L2PT-tunneled PDUs. If an access interface does receive L2PT-tunneled PDUs, there might be a loop in the network, and the device will shut down the interface. https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/layer-2-protocol-tunneling.html
upvoted 2 times
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penguin02007
1 year, 11 months ago
A is correct. https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/layer-2-protocol-tunneling.html#d116e87
upvoted 1 times
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