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300-170 · Question #25

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. VRF instances in ACI define isolated Layer 3 address domains, and a single tenant can house multiple VRFs to segment different routing contexts.

Cisco Data Center Virtualization

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

(36 responses)
  • A
    86% (31)
  • C
    3% (1)
  • D
    8% (3)
  • E
    3% (1)

Why each option

VRF instances in ACI define isolated Layer 3 address domains, and a single tenant can house multiple VRFs to segment different routing contexts.

AA VRF defines a Layer 3 address domainCorrect

A VRF (Virtual Routing and Forwarding) in ACI acts as a unique routing instance, providing an isolated Layer 3 address domain with its own routing and forwarding tables, distinct from other VRFs.

BA tenant can contain multiple VRFsCorrect

An ACI tenant is a logical container for policies, and it can indeed include multiple VRF instances to separate different Layer 3 routing domains within the same organizational entity.

CIn traditional networking, a VRF is equivalent to a VDC

A VRF in ACI is a Layer 3 routing instance, while a VDC (Virtual Device Context) in traditional Nexus is a virtualized instance of a physical switch, making them not equivalent.

DA tenant can contain only a single VRF.

A tenant can contain multiple VRFs, allowing for logical segmentation of Layer 3 services within a single tenant, making the statement that it can contain only one VRF incorrect.

EA VRF defines a Layer 2 address domain.

A VRF defines a Layer 3 address domain and routing context, not a Layer 2 address domain, which is typically handled by bridge domains.

Concept tested: ACI Tenant and VRF Relationship

Source: https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/5x/config/cisco-aci-fundamentals/b_Cisco_ACI_Fundamentals/b_Cisco_ACI_Fundamentals_chapter_010.html

Topics

#ACI#VRF#Tenant#Layer 3 domain

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