010-151 · Question #130
Which two statements are true about system controllers of Cisco Nexus 9500 Series? (Choose two.)
The correct answer is D. They are used to offload the internal non-data-path switching and management functions from the E. The Cisco Nexus 9500 Series supports redundant system controllers. Cisco Nexus 9500 Series system controllers handle non-data-path management functions offloaded from the supervisor and support a redundant configuration for high availability.
Question
Which two statements are true about system controllers of Cisco Nexus 9500 Series? (Choose two.)
Options
- AThey provide centralized arbitration to the system fabric for all line cards.
- BThey control the Layer 2 and Layer 3 services.
- CThe Cisco Nexus 9500 Series switch software, Enhanced NX-OS, runs on the system controllers.
- DThey are used to offload the internal non-data-path switching and management functions from the
- EThe Cisco Nexus 9500 Series supports redundant system controllers.
How the community answered
(39 responses)- A8% (3)
- B3% (1)
- C5% (2)
- D85% (33)
Why each option
Cisco Nexus 9500 Series system controllers handle non-data-path management functions offloaded from the supervisor and support a redundant configuration for high availability.
Centralized arbitration for the system fabric is a function of the fabric modules, not the system controllers.
Layer 2 and Layer 3 forwarding and services are managed by the supervisor module and line cards, not the system controllers.
Enhanced NX-OS runs on the supervisor module, not on the system controllers, which serve a hardware arbitration and offload role.
System controllers in the Nexus 9500 are specifically designed to offload internal non-data-path switching and management functions from the supervisor module, allowing the supervisor to focus on control plane and data-path operations without being burdened by fabric management overhead.
The Nexus 9500 architecture supports redundant system controllers, ensuring that a failure of one system controller does not disrupt fabric arbitration or management functions, which is a key high-availability design element of the platform.
Concept tested: Cisco Nexus 9500 system controller role and redundancy
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/hw/9500_hig/guide/b_n9500_hardware_install_guide/b_n9500_hardware_install_guide_chapter_011.html
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