In acore-distribution campus fabricmodel, the EVPN-VXLAN overlay is establishedonly between the core and distribution tiers. Theaccess switches are not part of the EVPN fabric; they connect upstream to distribution but do not run VXLAN tunnels.
“In the core-distribution campus fabric, only the core and distribution layers participate in the EVPN-VXLAN topology. The access layer connects to the distribution switches and forwards traffic but does not take part in the EVPN-VXLAN fabric.”
Option A:Correct — EVPN-VXLAN is built between core and distribution tiers.
Option B:Incorrect — both coreand distributionparticipate, not just core.
Option C:Incorrect — access switches are excluded from EVPN-VXLAN participation.
Option D:Correct — the access layer does not participate in EVPN-VXLAN.
[References:, Juniper Mist AI for Wired – Campus Fabric Core-Distribution Architecture, Juniper Validated Design – EVPN-VXLAN Campus Deployment Models, Junos OS EVPN Campus Fabric Design Guide, , , , ]
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