Refer to the exhibit. Two data center fabrics are configured based on EVPN Multi-Site technology. The EVPN Multi-Site virtual IP is moved to a down state. Which configuration action set resolves the…

The correct answer is D. Interface eth 1/6. The "FABRIC isolated" reason indicates that the leaf has lost its local underlay fabric connectivity without telling EVPN Multi-Site, so the multisite VIP goes down. To fix this you enable fabric- tracking on the leaf-to-spine interface so the EVPN multisite control plane knows…

Network

Question

Refer to the exhibit. Two data center fabrics are configured based on EVPN Multi-Site technology. The EVPN Multi-Site virtual IP is moved to a down state. Which configuration action set resolves the issue?

Exhibits

Options

AInterface eth 1/17
BInterface eth 1/18
CInterface eth 1/4
DInterface eth 1/6

How the community answered

(60 responses)

A
2% (1)
B
10% (6)
C
5% (3)
D
83% (50)

Explanation

The "FABRIC isolated" reason indicates that the leaf has lost its local underlay fabric connectivity without telling EVPN Multi-Site, so the multisite VIP goes down. To fix this you enable fabric- tracking on the leaf-to-spine interface so the EVPN multisite control plane knows when the local fabric is unreachable. In this topology, that's on Leaf3's eth1/6 link up to its spine: Leaf3(config)# interface ethernet1/6 Leaf3(config-if)# evpn multisite fabric-tracking This ensures the multisite VIP only fails over when the fabric itself is truly isolated.

Topics

#EVPN Multi-Site#BGP#DCI#interface tracking

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