300-320 · Question #284
Which feature supports multiple routing tables with overlapping networks on a single device?
The correct answer is A. VRF. VRF (Virtual Routing and Forwarding) creates multiple independent routing table instances on a single physical router or switch. Each VRF maintains its own routing table, forwarding table, and set of interfaces, allowing completely overlapping IP address spaces (e.g…
Question
Which feature supports multiple routing tables with overlapping networks on a single device?
Options
- AVRF
- BMetro Ethernet
- CRSTP
- DVSS
How the community answered
(45 responses)- A89% (40)
- B7% (3)
- C2% (1)
- D2% (1)
Explanation
VRF (Virtual Routing and Forwarding) creates multiple independent routing table instances on a single physical router or switch. Each VRF maintains its own routing table, forwarding table, and set of interfaces, allowing completely overlapping IP address spaces (e.g., 192.168.1.0/24 in VRF-A and 192.168.1.0/24 in VRF-B) to coexist without conflict. This is fundamental to MPLS L3VPN and network segmentation. Metro Ethernet (B) is a WAN service technology. RSTP (C) is Rapid Spanning Tree Protocol for Layer 2 loop prevention. VSS (D) combines two physical Catalyst switches into one logical switch for high availability but uses a single routing table, not multiple.
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