[Spectrum-X Security] You are implementing a multi-tenant environment on your Spectrum-X switches for different departments in your organization. You…

Virtual Routing and Forwarding (VRF) is the most effective feature for this scenario. VRF allows a single physical switch to host multiple independent virtual routing and forwarding instances. Each VRF instance maintains its own separate routing table, interfaces, and forwarding rules. This creates logically isolated network environments on the same physical infrastructure, effectively segmenting traffic between different departments (tenants) and preventing data leakage between them. This directly addresses the core requirement for secure, isolated multi-tenancy.

A. Set UP Port Mirroring: This is a diagnostic tool used to copy network traffic from one port to another for monitoring and analysis, not for creating network isolation.

C. Implement Access Control Lists (ACLs): ACLs filter traffic based on predefined rules but do not create fundamentally separate routing domains. They are used to enforce policy, not to build isolated virtual networks.

D. Enable Link Layer Discovery Protocol (LLDP): LLDP is a Layer 2 protocol for network device discovery. It has no role in creating secure, isolated network segments.

1. NVIDIA Cumulus Linux User Guide 5.8: In the section on "Virtual Routing and Forwarding - VRF," the documentation states, "VRF (virtual routing and forwarding) is a technology that allows multiple instances of a routing table to coexist on the same router at the same time. Because the routing instances are independent, you can use the same or overlapping IP addresses without conflicting with each other... VRF is a common building block for network virtualization and multi-tenancy." (Section: Layer 3 > Virtual Routing and Forwarding - VRF).

2. NVIDIA Onyx User Manual (Rev 3.9.2110): Chapter 20, "IP Routing," describes VRF functionality. It explains, "VRF allows a physical router to be partitioned into multiple virtual routers... Each VRF has its own routing table, a set of interfaces that use this forwarding table, and a set of routing protocols that populate the forwarding table." This confirms its role in creating isolated partitions for multi-tenancy. (Section: Virtual Routing and Forwarding (VRF)).

3. Juniper Networks TechLibrary (Vendor Documentation): While from another vendor, the principle is universal and well-defined. "Virtual routing and forwarding (VRF) is a technology included in network-layer (Layer 3) switches and routers that allows multiple, independent routing table instances to coexist on the same device... This functionality is essential for network virtualization, enabling multi-tenancy..." (Article: Understanding Virtual Routing and Forwarding (VRF)). This provides a standard industry definition applicable to Spectrum-X.