JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2022) — Question 43

You are configuring a BGP signaled Layer 2 VPN across your MPLS enabled core network.
In this scenario, which statement is correct?

Answer options

• A. This type of VPN is only supported over LSPs that are using traffic-engineering.
• B. You must use a unique route distinguisher value on all PE devices in your environment.
• C. You must ensure that all interfaces within the site's configuration are explicitly defined with their remote site identifier values.
• D. This type of VPN requires the support of the 12vpn signaling NLRI on all route reflectors and participating PE devices.

Correct answer: D

Explanation

The correct answer is D because the 12vpn signaling NLRI is essential for the operation of BGP signaled Layer 2 VPNs. Option A is incorrect as this VPN type does not require traffic-engineering specifically. Option B is misleading because while unique route distinguishers are important, they do not need to be identical across all PE devices. Option C is also incorrect since not all interfaces require explicit remote site identifiers in every configuration.