In a VXLAN scenario, which of the following features can be enabled to reduce ARP...

VXLAN networks suffer from ARP flooding because ARP requests are broadcasted across all VTEPs in a Layer 2 domain. To reduce ARP flooding, the following mechanisms can be enabled:

✅ A. Local Proxy ARP

Allows the local VTEP to respond to ARP requests without forwarding them across the VXLAN network.

The VTEP caches MAC-IP mappings and replies directly to ARP requests, reducing unnecessary flooding.

✅ B. ARP Broadcast Suppression

Converts ARP broadcast packets into unicast or multicast packets to minimize network-wide flooding.

✅ C. Host Information Collection

Collects and stores MAC-IP bindings of endpoints, which can be used by proxy ARP to reduce flooding.

Incorrect Answer:

❌ D. Port Isolation

Port isolation prevents communication between devices within the same VLAN but does not help reduce ARP flooding between VTEPs.

Reference from Huawei HCIE-Datacom Documentation:

Huawei VXLAN Configuration Guide – ARP Optimization Techniques

HCIE-Datacom Training Material – Reducing ARP Broadcasts in VXLAN Networks