300-615 Question #253: Real Exam Question with Answer & Explanation

The correct answer is A. peer-gateway. In a BGP VXLAN EVPN fabric, when one of the interfaces (like Eth1/1 on Spine-1) fails, it can cause traffic disruptions if the necessary configuration isn't in place to handle gateway redundancy across VTEPs. The peer-gateway command enables redundancy for the default gateway on

Question

Refer to the exhibit. A BGP VXLAN EVPN Is used in a data center. The Eth1/1 fails on SPINE-1, and traffic flow fails from Leaf-1 to the Leaf-2 VTEP over port channel 12 in VLAN 7. Which command resolves the issue?

Exhibit

Options

Apeer-gateway
Blayer3 peer-router
Cip arp synchronize
Dsystem nve infra-vlans

Explanation

In a BGP VXLAN EVPN fabric, when one of the interfaces (like Eth1/1 on Spine-1) fails, it can cause traffic disruptions if the necessary configuration isn't in place to handle gateway redundancy across VTEPs. The peer-gateway command enables redundancy for the default gateway on both VTEPs (Leaf-1 and Leaf-2) in an active-active manner, allowing them to forward packets for each other's MAC addresses. This feature is essential in ensuring traffic can still flow even when one spine link fails. By configuring peer-gateway, you can resolve the traffic issue by allowing traffic to flow through the other available links.

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