Spirent TestCenter TRILL emulation, now part of VIAVI, supports validation of TRILL deployments, which merge Layer 2 and Layer 3 concepts by applying link‑state routing to VLAN‑aware bridges for higher efficiency and scalability in large data centers. TRILL enables clouds of physical and virtual machines to operate as a single IP subnet, removing the need for manual reconfiguration when nodes move. The emulation package verifies TRILL RBridge functionality, routing behavior, traffic forwarding, and scalability, helping ensure reliable performance in modern multi‑node virtualized environments.

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