Centralized gateway deployment using BGP EVPN in Huawei’s data center networks (e.g.,

CloudFabric) involves a gateway handling Layer 3 routing for VXLAN overlays. Let’s evaluate each

statement:

A. When configuring a VTEP, you need to create a Layer 2 BD and bind a VNI to the Layer 2 BD: A

Bridge Domain (BD) is a Layer 2 broadcast domain in VXLAN, and a Virtual Network Identifier (VNI) is

bound to it to segment traffic. This is a standard step when configuring a VXLAN Tunnel Endpoint

(VTEP) to map the overlay network. TRUE.

B. A VXLAN tunnel is identified by a pair of VTEP IP addresses and can be established if the local and

remote VTEP IP addresses are reachable to each other at Layer 3: VXLAN tunnels are established

between VTEPs using their IP addresses as endpoints. Layer 3 reachability (e.g., via underlay routing)

is required for tunnel establishment. TRUE.

C. When BGP EVPN is used to dynamically establish a VXLAN tunnel, the local and remote VTEPs first

establish a BGP EVPN peer relationship and then exchange BGP EVPN routes to transmit VNI and

VTEP IP address information. A VXLAN tunnel is then dynamically established between them: In BGP

EVPN, VTEPs establish a BGP peer relationship, exchange routes (e.g., Type 2 for MAC/IP or Type 3

for multicast), and share VNI and VTEP IP details, enabling dynamic tunnel setup. TRUE.

D. When configuring a VTEP, you need to create an EVPN Instance in the Layer 2 BD and configure an

RD for the local EVPN instance. You do not need to configure an RT: An EVPN Instance (EVI) is created

within a BD, and a Route Distinguisher (RD) is configured to make routes unique. However, Route

Targets (RTs) are also required to control route import/export between EVPN peers, ensuring proper

VNI and route distribution. Stating that RT configuration is not needed is incorrect, as RTs are

essential for BGP EVPN operation. FALSE.

Thus, D is the false statement because RT configuration is necessary in centralized gateway

deployment with BGP EVPN.

Reference: Huawei CloudFabric Data Center Network Solution – BGP EVPN Configuration; HCIP-Data

Center Network Training – EVPN Gateway Deployment.