A service provider is deploying EVPN-MPLS and wants to ensure that all PEs in a VPN have the same MAC forwarding table. Which EVPN route type is primarily responsible for distributing MAC addresses to remote PEs?

Type 2 MAC/IP Advertisement route

Type 1 Ethernet Auto-Discovery route

Type 3 Inclusive Multicast Ethernet Tag route

What is the purpose of the MPLS label in EVPN-MPLS data plane?

To identify the EVPN instance and/or the destination MAC address

To carry the source MAC address

How does EVPN multihoming affect MAC learning?

MAC learning is disabled on multihomed segments

Each PE in the multihoming group learns MACs independently and advertises them with the same Ethernet segment identifier

MAC addresses are learned via a central controller

Only the designated forwarder learns MACs from the segment

In EVPN-VXLAN, what is the role of the VXLAN Network Identifier (VNI)?

It identifies the next hop VTEP

It identifies the EVPN instance or broadcast domain

It is used for MAC address learning

It is used for routing between subnets

An EVPN-VXLAN fabric has a host that moves from PE1 to PE2. After the move, PE2 advertises a Type 2 route for the host's MAC with sequence number 1. PE1 still has the MAC in its forwarding table and continues to advertise the same MAC with sequence number 0. What happens when PE2 receives PE1's advertisement?

PE2 accepts PE1's advertisement and flushes its own MAC entry, causing a temporary loop until PE1's route is withdrawn.

PE2 ignores PE1's advertisement because its own sequence number is higher, and PE1 will eventually withdraw its route after a timeout.

PE2 treats this as a duplicate MAC and shuts down the Ethernet segment to prevent a loop.

PE2 increments its sequence number to 2 and re-advertises, forcing PE1 to withdraw its route.

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

Domain 7Objective 6

EVPN Traffic Flow and MAC Learning/distribution 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 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

10concepts

Questions 1–5

1application · medium
A service provider is deploying EVPN-MPLS and wants to ensure that all PEs in a VPN have the same MAC forwarding table. Which EVPN route type is primarily responsible for distributing MAC addresses to remote PEs?
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2foundation · easy
What is the purpose of the MPLS label in EVPN-MPLS data plane?
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3foundation · easy
How does EVPN multihoming affect MAC learning?
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4foundation · easy
In EVPN-VXLAN, what is the role of the VXLAN Network Identifier (VNI)?
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5expert · hard
An EVPN-VXLAN fabric has a host that moves from PE1 to PE2. After the move, PE2 advertises a Type 2 route for the host's MAC with sequence number 1. PE1 still has the MAC in its forwarding table and continues to advertise the same MAC with sequence number 0. What happens when PE2 receives PE1's advertisement?
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