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| Section | Objectives |
|---|---|
| Cisco ACI Architecture | - ACI Object Model
|
| ACI Fabric Infrastructure | - Fabric Access Configuration
|
| Operations and Troubleshooting | - Monitoring and Management
|
| Policy Model and Endpoint Groups | - Policy Constructs
|
| Integration and External Connectivity | - L2/L3 Outside Connectivity
|
| Automation and Programmability | - API and Integration
|
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NEW QUESTION # 77
The company ESXi infrastructure is hosted on the Cisco UCS-B Blade Servers. The company decided to take advantage of ACI VMM integration to enable consistent enforcement of policies across virtual and physical workloads. The requirement is to prevent the packet loss between the distributed virtual switch and the ACI fabric. Which setting must be implemented on a vSwitch policy to accomplish this goal?
Answer: D
Explanation:
To prevent packet loss between the distributed virtual switch and the ACI fabric in a company's ESXi infrastructure hosted on Cisco UCS-B Blade Servers, the vSwitch policy must implement MAC Pinning. This setting ensures that each virtual interface card (vNIC) on the UCS servers is pinned to an uplink Ethernet port, providing a stable and consistent path for traffic and preventing packet loss due to path changes.
NEW QUESTION # 78
An organization has encountered many STP-related issues in the past due to failed hardware components. They are in the process of long-term migration to a newly deployed ACI fabric. Senior engineers are worried that spanning-tree loops in the existing network may be extended to the ACI fabric. Which feature must be enabled on the ACI leaf ports to protect the fabric from spanning-tree loops?
Answer: C
Explanation:
o protect the ACI fabric from spanning-tree loops, the feature that must be enabled on the ACI leaf ports is BPDU Guard
NEW QUESTION # 79
Which two components are essential parts of a Cisco ACI Virtual Machine Manager (VMM) domain policy configuration? (Choose two.)
Answer: C,D
NEW QUESTION # 80
An engineer must connect a new host to port 1 »'1 on Leaf 101. A Cisco ACI fabric has an MOP policy configured but experience excessive Layer 2 loops The engineer wants the Cisco ACI fabric to detect and prevent Layer 2 loops m the fabric Which set of actions accomplishes these goals'?
Answer: B
Explanation:
To detect and prevent Layer 2 loops in a Cisco ACI fabric, the engineer must configure the Mis-Cabling Protocol (MCP) and related policies. MCP is designed to detect loops in Layer 2 network segments connected to ACI access ports and operates in conjunction with Spanning Tree Protocol (STP) running on external Layer 2 networks. The steps to accomplish these goals include:
Enable MCP Globally: Ensure that MCP is enabled globally on all access ports, virtual ports, and virtual port channels (VPCs) unless they are disabled at the individual port level1.
Configure MCP Transmit Frequency: Set the transmit frequency to a value that allows for quick loop detection. Starting with the 3.2(1) release, the Cisco ACI fabric provides faster loop detection with transmit frequencies from 100 milliseconds to 300 seconds1.
Set Action on Loop Detection: Decide how the MCP policies will act upon loop detection. Options include generating a syslog message or disabling the port upon detection of a loop1.
Implement Error Disabled Recovery Policy: Configure an error disabled recovery policy to automatically re-enable ports that were disabled due to loop detection after a configurable interval1.
By following these steps, the engineer can ensure that the Cisco ACI fabric will detect and prevent Layer 2 loops, thereby maintaining a stable and efficient network environment.
Reference:
Cisco APIC Online Help - Loop Detection1
ACI Layer 2 loop detection and Mitigation - Cisco Video Portal2
NEW QUESTION # 81
What is the effect of enabling the disable Remote EP learn feature?
Answer: B
Explanation:
https://community.cisco.com/t5/application-centric/aci-disable-remote-ep-learn/td-p/4062054 When you enable this feature, it clears all the remote endpoints from the border leaf only.
https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric- infrastructure/white-paper-c11-739989.html#DisableRemoteEPLearnonborderleaf When this feature is enabled, remote IP endpoint learning at the VRF instance is disabled on border leaf switches.
However, border leaf may still learn remote IP endpoints from IP multicast routing packets
NEW QUESTION # 82
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