Juniper Exam JN0-664 Topic 8 Question 9 Discussion

Actual exam question for Juniper's JN0-664 exam

Question #: 9
Topic #: 8

You are a network architect for a service provider and want to offer Layer 2 services to your customers You want to use EVPN for Layer 2 services in your existing MPLS network.

Which two statements are correct in this scenario? (Choose two.)

ASegment routing must be configured on all PE routers.

BVXLAN must be configured on all PE routers.

CEVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping

DEVPN uses Type 3 routes to join a multicast tree to flood traffic.

Show Suggested Answer

Suggested Answer: C

BGP signaled Layer 2 VPN is a type of VPN that uses BGP to distribute VPN labels and information for Layer 2 connectivity between sites over an MPLS network.BGP signaled Layer 2 VPN requires the support of the l2vpn NLRI on all core BGP devices1. The l2vpn NLRI is a new address family that carries Layer 2 VPN information such as the VPN identifier, the attachment circuit identifier, and the route distinguisher.The l2vpn NLRI is used for both auto-discovery and signaling of Layer 2 VPNs2. In this scenario, we are configuring a BGP signaled Layer 2 VPN across an MPLS enabled core network. Therefore, we need to ensure that all core BGP devices support the l2vpn NLRI.

by Lavera at Jul 27, 2023, 06:43 AM

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Nieves

2 months ago

I wonder if the exam writer has ever actually configured EVPN in a real network. Probably not, or they wouldn't be asking such tricky questions!

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Janessa

1 months ago

I agree, these questions can be quite tricky sometimes!

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Noe

1 months ago

C) EVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping

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Domingo

2 months ago

A) Segment routing must be configured on all PE routers.

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Vernice

2 months ago

Wait, does EVPN require me to be a mind reader to figure out the correct answers? I'll just go with my gut and pick C and D.

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Evangelina

2 months ago

Ah, segment routing isn't necessary for basic EVPN functionality. I'll steer clear of A. C and D sound like the right choices here.

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Krystal

23 days ago

I think we can skip segment routing and choose C and D for EVPN services.

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Veronika

1 months ago

Yes, A is not necessary for EVPN. Let's select C and D for this scenario.

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Joseph

1 months ago

VXLAN is not needed for EVPN, so we can eliminate B. C and D are the correct choices.

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Irene

2 months ago

I agree, segment routing is not required for EVPN. Let's go with C and D.

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Lelia

3 months ago

Hmm, B seems like a trap answer. VXLAN is for encapsulating Layer 2 traffic, not a requirement for EVPN. I'll go with C and D.

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Ludivina

2 months ago

Segment routing is not required for EVPN, so A is not correct. VXLAN is not a must, so B is not needed.

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Florencia

2 months ago

D is also correct because EVPN uses Type 3 routes to flood traffic. Good choices!

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Salley

2 months ago

I agree, B is not necessary for EVPN. C is correct because EVPN uses Type 2 routes for MAC and IP address pairs.

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Octavio

3 months ago

C and D are correct. EVPN uses Type 2 routes for MAC/IP address learning and Type 3 routes for multicast forwarding. I'm glad I brushed up on my EVPN knowledge before the exam!

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