Comprehensive and Detailed Explanation From Exact Extract:

BGP is widely adopted in data center fabrics due to its scalability, multiprotocol support, and maturity. However, option B is incorrect because BGP does not automatically discover neighbors. Unlike link-state protocols (e.g., OSPF, IS-IS), which use multicast for neighbor discovery, BGP requires manual configuration of peers via IP addresses. This is explicitly stated in Nokia's documentation:

"BGP requires explicit configuration of neighbors. It does not support automatic neighbor discovery via multicast/broadcast mechanisms."

— Nokia SR Linux Configuration Guide, Section: "BGP in Data Center Underlays"

Validation of Other Options:

A: Correct. BGP scales more efficiently in large data centers than link-state protocols. Per Nokia:

"BGP’s path-vector design reduces control-plane overhead compared to link-state protocols, making it optimal for large-scale data center underlays."

— Nokia Data Center Fabric Design Guide

C: Correct. BGP’s maturity is a key advantage:

"BGP’s decades of deployment and extensive vendor interoperability make it a reliable choice for fabric underlays."

— SR Linux EVPN Services Guide

D: Correct. BGP natively supports multi-protocol extensions (MP-BGP) for IPv4/IPv6:

"MP-BGP enables simultaneous transport of IPv4 and IPv6 routes via the same BGP session."

— SR Linux Routing Protocols Handbook

Conclusion:

Option B is the only choice that misrepresents BGP functionality, as neighbor auto-discovery is not a feature of BGP. This distinction is critical in Nokia SR Linux fabric deployments.