In an EVPN-VXLAN fabric, a PE receives a VXLAN encapsulated frame from a remote VTEP. How does the PE learn the source MAC address of the original frame?

The PE learns the source MAC from the BGP Type 2 route that accompanied the frame.

The PE learns the source MAC from the outer IP header of the VXLAN packet.

The PE decapsulates the VXLAN frame and learns the source MAC from the inner Ethernet header.

The PE does not learn MAC addresses from VXLAN frames; it only learns from local interfaces.

How does EVPN typically forward broadcast, unknown unicast, and multicast (BUM) traffic?

By dropping the traffic because EVPN does not support BUM

By using the routing table to forward the traffic to the destination

By sending the traffic to a central reflector that forwards it to all PEs

By sending a copy to each remote PE in the EVPN instance using ingress replication

An EVPN-VXLAN fabric uses ingress replication for BUM traffic. A multicast frame arrives at PE1 from a local host. How does PE1 forward this frame to remote PEs?

PE1 sends a copy of the frame to each remote PE's VTEP IP address.

PE1 sends the frame to a multicast group, and all PEs in the group receive it.

PE1 drops the frame because multicast is not supported in EVPN.

PE1 sends the frame only to the PE that is the designated forwarder for the multicast group.

Which EVPN route type is used to advertise the MAC address of a host attached to a PE?

Inclusive Multicast Ethernet Tag (Type 3)

Ethernet Auto-Discovery (Type 1)

How does EVPN ensure that all PEs in an EVPN instance have consistent MAC forwarding tables?

By flooding all data frames to every PE

By using BGP to distribute MAC reachability information

By using a central database that PEs query

By using LLDP to exchange MAC tables

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 2)

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 6–10

6application · medium
In an EVPN-VXLAN fabric, a PE receives a VXLAN encapsulated frame from a remote VTEP. How does the PE learn the source MAC address of the original frame?
Select an answer first
7foundation · easy
How does EVPN typically forward broadcast, unknown unicast, and multicast (BUM) traffic?
Select an answer first
8application · medium
An EVPN-VXLAN fabric uses ingress replication for BUM traffic. A multicast frame arrives at PE1 from a local host. How does PE1 forward this frame to remote PEs?
Select an answer first
9foundation · easy
Which EVPN route type is used to advertise the MAC address of a host attached to a PE?
Select an answer first
10foundation · easy
How does EVPN ensure that all PEs in an EVPN instance have consistent MAC forwarding tables?
Select an answer first

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