What is the difference between a route distinguisher (RD) and a route target (RT) in a Layer 2 VPN?

The RD controls route filtering, while the RT makes prefixes unique

The RD makes prefixes unique, while the RT controls route distribution and VRF membership

Both are used for route filtering, but the RD is longer

The RD is a BGP community, while the RT is part of the NLRI

A network engineer is configuring a Layer 2 VPN and needs to ensure that the VRF on the local PE imports routes from the remote PE. The remote PE is advertising routes with a specific route target. What must be configured on the local PE to import these routes?

The same route target in the VRF import policy.

The same VRF name as the remote PE.

The same route distinguisher as the remote PE.

The same NLRI type as the remote PE.

How do route distinguishers (RDs) and route targets (RTs) work together to enable Layer 2 VPN route exchange?

The RD ensures uniqueness of the prefix, and the RT ensures the route is imported into the correct VRF

Both are used to encrypt the VPN route exchange

The RT ensures uniqueness of the prefix, and the RD ensures the route is imported into the correct VRF

Both are used to specify the next-hop router for the VPN route

Juniper NetworksCertified Professional, Service Provider Routing and Switching (JNCIP-SP)

Domain 7Objective 2

NLRI, Route Distinguishers, and Route Targets JN0-664 Practice Questions (Page 1)

Part of the Layer 2 VPNs domain, which makes up ~16% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 1–1 from this objective — we provide 13 practice questions to prepare you well beyond it. (estimate)

13questions here

3free pages

4concepts

Questions 1–5

1application · medium
A network engineer is troubleshooting a Layer 2 VPN issue. The BGP table on the PE router shows a route with the prefix '100:1:192.168.1.0/24'. What does the '100:1' portion represent?
Select an answer first
2foundation · easy
What is the difference between a route distinguisher (RD) and a route target (RT) in a Layer 2 VPN?
Select an answer first
3application · medium
A network engineer is configuring a Layer 2 VPN and needs to ensure that the VRF on the local PE imports routes from the remote PE. The remote PE is advertising routes with a specific route target. What must be configured on the local PE to import these routes?
Select an answer first
4foundation · easy
Which field is included in the NLRI of a Layer 2 VPN BGP update to ensure uniqueness of the prefix?
Select an answer first
5foundation · easy
How do route distinguishers (RDs) and route targets (RTs) work together to enable Layer 2 VPN route exchange?
Select an answer first

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NLRI, Route Distinguishers, and Route Targets JN0-664 Practice Questions (Page 1)

Questions 1–5

A network engineer is troubleshooting a Layer 2 VPN issue. The BGP table on the PE router shows a route with the prefix '100:1:192.168.1.0/24'. What does the '100:1' portion represent?

What is the difference between a route distinguisher (RD) and a route target (RT) in a Layer 2 VPN?

A network engineer is configuring a Layer 2 VPN and needs to ensure that the VRF on the local PE imports routes from the remote PE. The remote PE is advertising routes with a specific route target. What must be configured on the local PE to import these routes?

Which field is included in the NLRI of a Layer 2 VPN BGP update to ensure uniqueness of the prefix?

How do route distinguishers (RDs) and route targets (RTs) work together to enable Layer 2 VPN route exchange?

Keep studying — Layer 2 VPNs