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Exam JN0-663 topic 1 question 38 discussion

Actual exam question from Juniper's JN0-663
Question #: 38
Topic #: 1
[All JN0-663 Questions]

Which two statements regarding Ethernet segments (ES) are correct? (Choose two.)

  • A. The Type-4 EVPN route will be used to elect the designated forwarder for the ES.
  • B. The Type-3 EVPN route will be used for the aliasing function to load-balance to the ES.
  • C. The Type-1 EVPN route will indicate if the ES is all-active or single-active.
  • D. The Type-2 EVPN route will indicate if there is a designated forwarder on the ES.
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Suggested Answer: AC 🗳️
by hcccc at June 2, 2021, 1:40 a.m.

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hcccc
3 years, 10 months ago
Correct, A designated forwarder (DF) is required when customer edge devices (CEs) are multihomed to more than one provider edge (PE) device. Without a designated forwarder, multihomed hosts would receive duplicate packets. Designated forwarders are chosen for an Ethernet segment identifier (ESI) based on type 4 route advertisements. https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/ref/statement/designated-forwarder-election-hold-time-evpn.html
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