200-155 · Question #22
In an ACf Fabric, which two statements about contexts are true? (Choose two.)
The correct answer is A. A VRF defines a Layer 3 address domain B. A tenant can contain multiple VRFs. In an ACI fabric, a VRF (Virtual Routing and Forwarding) context establishes a distinct Layer 3 address domain, and a single tenant can encompass multiple VRFs for logical segmentation.
Question
In an ACf Fabric, which two statements about contexts are true? (Choose two.)
Options
- AA VRF defines a Layer 3 address domain
- BA tenant can contain multiple VRFs
- CIn traditional networking, a VRF is equivalent to a VDC
- DA tenant can contain only a single VRF.
- EA VRF defines a Layer 2 address domain.
How the community answered
(26 responses)- A88% (23)
- C4% (1)
- E8% (2)
Why each option
In an ACI fabric, a VRF (Virtual Routing and Forwarding) context establishes a distinct Layer 3 address domain, and a single tenant can encompass multiple VRFs for logical segmentation.
A VRF context in ACI provides a separate routing table and forwarding instance, effectively creating a distinct Layer 3 address domain to isolate traffic and routing policies.
An ACI tenant is a logical container that can hold various network objects, including multiple VRFs (contexts), allowing for granular isolation and policy enforcement for different applications or departments within that tenant.
In traditional networking, a VRF is a routing construct, while a VDC (Virtual Device Context) partitions a physical device; they are not equivalent.
An ACI tenant is designed to host multiple VRFs, allowing for greater flexibility and logical separation of services within the tenant.
A VRF explicitly defines a Layer 3 address domain, whereas Layer 2 address domains are typically handled by Bridge Domains in ACI.
Concept tested: Cisco ACI tenant and VRF context functionalities
Source: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-739316.html
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