300-320 · Question #170
Which network virtualization technology provides logical isolation of network traffic at Layer 3?
The correct answer is C. VRF-Lite. VRF-Lite (Virtual Routing and Forwarding – Lite) creates multiple independent routing table instances on a single router or multilayer switch. Each VRF maintains its own separate Forwarding Information Base (FIB), routing table, and set of interfaces, providing Layer 3 logical…
Question
Which network virtualization technology provides logical isolation of network traffic at Layer 3?
Options
- AVSS
- BVLAN
- CVRF-Lite
- DMEC
How the community answered
(47 responses)- A4% (2)
- B2% (1)
- C94% (44)
Explanation
VRF-Lite (Virtual Routing and Forwarding – Lite) creates multiple independent routing table instances on a single router or multilayer switch. Each VRF maintains its own separate Forwarding Information Base (FIB), routing table, and set of interfaces, providing Layer 3 logical isolation so that traffic in one VRF cannot reach traffic in another VRF without explicit policy. VLANs provide Layer 2 logical isolation by segmenting broadcast domains, not Layer 3. VSS virtualizes the switch control plane to combine chassis but does not isolate routing tables per tenant. MEC (Multichassis EtherChannel) is a link-aggregation technology with no role in Layer 3 traffic isolation.
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