A green data center is being deployed and a design requirement is to be able...

Transparent Interconnection of Lots of Links (TRILL) is an IETF standard specifically designed to improve scalability, convergence, and loop prevention in data center environments while supporting virtualization at scale. TRILL replaces traditional Spanning Tree Protocol (STP) with a shortest path forwarding protocol, combining the benefits of routing with the simplicity of bridging.

TRILL uses IS-IS as its control plane protocol to calculate optimal paths dynamically, enabling better bandwidth utilization and faster failover—critical for server virtualization that demands highly available, resilient, and scalable Layer 2 networks.

Why other options are incorrect:

A. Data Center Bridging (DCB) is a set of enhancements for Ethernet but doesn’t directly address virtualization scaling.

B. Unified Fabric combines storage and data traffic but is not IETF standardized and focuses on cabling consolidation.

D. FabricPath is Cisco proprietary, not IETF standard.

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