200-155 · Question #175
In Cisco NX-OS, which description of the management VRF is true?
The correct answer is C. The mgmt0 interface is shared among multiple VDCs.. In Cisco NX-OS, the management VRF provides an isolated routing instance for out-of-band management traffic, and its associated mgmt0 interface is a dedicated resource shared across all Virtual Device Contexts (VDCs) on the switch.
Question
In Cisco NX-OS, which description of the management VRF is true?
Options
- AThe management VRF is similar to the global routing table in Cisco
- BThe mgmt0 interface can be used in any VRF
- CThe mgmt0 interface is shared among multiple VDCs.
- DAll layer 3 interfaces exist in the management VRF until they are reassigned
How the community answered
(39 responses)- A5% (2)
- B5% (2)
- C87% (34)
- D3% (1)
Why each option
In Cisco NX-OS, the management VRF provides an isolated routing instance for out-of-band management traffic, and its associated `mgmt0` interface is a dedicated resource shared across all Virtual Device Contexts (VDCs) on the switch.
The management VRF is an isolated routing instance for administrative traffic, distinct from the global routing table, which is used for data plane forwarding.
The `mgmt0` interface is exclusively bound to the management VRF and cannot be assigned to or utilized within any other VRF instance.
The `mgmt0` interface is a special management interface that is designated as a shared resource, meaning it is accessible and available in every Virtual Device Context (VDC) on a Cisco Nexus switch.
Other Layer 3 interfaces are placed in the default VRF or user-defined VRFs by default, not the management VRF, and carry data plane traffic.
Concept tested: Cisco NX-OS Management VRF and VDC sharing
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/vdc/configuration/guide/vdc_cli/vdc_intro.html
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