Which three of the following describe the Border Gateway Routing Protocol (BGP) configuration on a Tier-0 Gateway? (Choose three.)

A) Can be used as an Exterior Gateway Protocol. This is correct. BGP is a protocol that can be used to

exchange routing information between different autonomous systems (AS). An AS is a network or a

group of networks under a single administrative control. BGP can be used as an Exterior Gateway

Protocol (EGP) to connect an AS to other ASes on the internet or other external networks1

B) It supports a 4-byte autonomous system number. This is correct. BGP supports both 2-byte and 4-

byte AS numbers. A 2-byte AS number can range from 1 to 65535, while a 4-byte AS number can

range from 65536 to 4294967295. NSX supports both 2-byte and 4-byte AS numbers for BGP

configuration on a Tier-0 Gateway2

C) The network is divided into areas that are logical groups. This is incorrect. This statement

describes OSPF, not BGP. OSPF is another routing protocol that operates within a single AS and

divides the network into areas to reduce routing overhead and improve scalability. BGP does not use

the concept of areas, but rather uses attributes, policies, and filters to control the routing decisions

and traffic flow3

D) FIGRP Is disabled by default. This is correct. FIGRP stands for Fast Interior Gateway Routing

Protocol, which is an enhanced version of IGRP, an obsolete routing protocol developed by Cisco.

FIGRP is not supported by NSX and is disabled by default on a Tier-0 Gateway.

E) BGP is enabled by default. This is incorrect. BGP is not enabled by default on a Tier-0 Gateway. To

enable BGP, you need to configure the local AS number and the BGP neighbors on the Tier-0 Gateway

using the NSX Manager UI or API.

To learn more about BGP configuration on a Tier-0 Gateway in NSX, you can refer to the following

resources:

VMware NSX Documentation: Configure BGP 1

VMware NSX 4.x Professional: BGP Configuration

VMware NSX 4.x Professional: BGP Troubleshooting