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Question 31/85
Which of the following statements about BGP EVPN principles are correct in a scenario where a VXLAN tunnel is dynamically established through BGP EVPN?
Correct Answer: A,B,D
BGP EVPN in VXLAN Tunneling
# A. MP_REACH_NLRI is used to carry routing information.
* MP_REACH_NLRI (Multiprotocol Reachable Network Layer Reachability Information) is used in BGP updates to carry VXLAN reachability information.
# B. Several BGP EVPN routes are defined through BGP extension.
* BGP EVPN introduces multiple route types, such as Type 2 (MAC/IP Advertisement), Type 3 (Inclusive Multicast), and Type 5 (IP Prefix Advertisement).
# D. MP_REACH_NLRI is used to carry the RT.
* RT (Route Target) defines route import/export policies in VPN environments.
* MP_REACH_NLRI carries the RT attribute in BGP EVPN updates.
# Incorrect answer:# C. MP_REACH_NLRI is used to carry the RD.
* Wrong! The Route Distinguisher (RD) is carried inside BGP attributes, but not in MP_REACH_NLRI.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei VXLAN BGP EVPN Configuration Guide - BGP EVPN Route Types
* HCIE-Datacom Training Material - VXLAN Dynamic Tunnel Establishment
# A. MP_REACH_NLRI is used to carry routing information.
* MP_REACH_NLRI (Multiprotocol Reachable Network Layer Reachability Information) is used in BGP updates to carry VXLAN reachability information.
# B. Several BGP EVPN routes are defined through BGP extension.
* BGP EVPN introduces multiple route types, such as Type 2 (MAC/IP Advertisement), Type 3 (Inclusive Multicast), and Type 5 (IP Prefix Advertisement).
# D. MP_REACH_NLRI is used to carry the RT.
* RT (Route Target) defines route import/export policies in VPN environments.
* MP_REACH_NLRI carries the RT attribute in BGP EVPN updates.
# Incorrect answer:# C. MP_REACH_NLRI is used to carry the RD.
* Wrong! The Route Distinguisher (RD) is carried inside BGP attributes, but not in MP_REACH_NLRI.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei VXLAN BGP EVPN Configuration Guide - BGP EVPN Route Types
* HCIE-Datacom Training Material - VXLAN Dynamic Tunnel Establishment
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