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Juniper Exam JN0-664 Topic 2 Question 30 Discussion

Actual exam question for Juniper's JN0-664 exam
Question #: 30
Topic #: 2
[All JN0-664 Questions]

Exhibit

CE-1 and CE-2 are part of a VPLS called Customer1 No connectivity exists between CE-1 and CE-2. In the process of troubleshooting, you notice PE-1 is not learning any routes for this VPLS from PE-2, and PE-2 is not learning any routes for this VPLS from PE-1.

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Suggested Answer: A

VPLS is a technology that provides Layer 2 VPN services over an MPLS network. VPLS uses BGP as its control protocol to exchange VPN membership information between PE routers. The route target is a BGP extended community attribute that identifies which VPN a route belongs to. The route target must match on PE routers that participate in the same VPLS instance, otherwise they will not accept or advertise routes for that VPLS.


by Merilyn at Jul 18, 2024, 12:05 PM

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Alease
8 months ago
Haha, changing the instance type to I2vpn? Really? That's like trying to fit a square peg in a round hole. Not gonna work, buddy!
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Devorah
8 months ago
Hmm, I'm not sure about that. What if the route distinguisher is the problem? That could be causing the connectivity issues between PE-1 and PE-2.
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Bong
8 months ago
I agree with Carin. The route target is the key to VPLS connectivity, so that's the first thing I'd check.
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Remedios
6 months ago
D) The no-tunnel-services statement should be deleted on both PEs.
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Carlene
6 months ago
C) The instance type should be changed to l2vpn.
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Carissa
7 months ago
B) The route distinguisher must match on PE-1 and PE-2.
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Eveline
7 months ago
A) The route target must match on PE-1 and PE-2.
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Roxanne
7 months ago
B) I think the route distinguisher must match on PE-1 and PE-2.
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Lakeesha
7 months ago
A) The route target must match on PE-1 and PE-2.
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Annamae
8 months ago
I think we should check both the route target and route distinguisher to be sure.
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Tasia
8 months ago
It's possible, but I think the route target is more likely the culprit.
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Mona
8 months ago
But what about the route distinguisher? Could that also be causing the problem?
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Carin
8 months ago
The route target must match on PE-1 and PE-2. That's the obvious issue here.
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German
7 months ago
D) The no-tunnel-services statement should be deleted on both PEs.
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Trinidad
7 months ago
C) The instance type should be changed to I2vpn.
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Myra
7 months ago
B) The route distinguisher must match on PE-1 and PE-2.
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Matt
8 months ago
A) The route target must match on PE-1 and PE-2.
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Annamae
8 months ago
I agree, if the route target doesn't match, the PEs won't learn the routes.
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Tasia
9 months ago
I think the issue might be with the route target.
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