Correct Answer: A

Ring1, instance 1: control VLAN: 1000 protected VLANs: 51-135 Ring 1,Instance2: control VLAN: 1001 protected VLANs: 136-220 Ring 2, Instance l: control VLAN: 1002 protected VLANs: l8l -200 Ring 2, Instance2: control VLAN: l003 protected VLANs:201 -220 is a valid design for the control and protected VLANs on the VSX fabric l switches for an Ethernet Ring Protection Switching (ERPS) solution. The control VLANs are unique for each ring instance and do not overlap with any protected VLANs. The protected VLANs are also unique for each ring instance and do not overlap with any control VLANs2.

Correct Answer: A

Automated provisioning of LAGs between AHV and VSX is an operation supported when Aruba Fabric Composer (AFC) is integrated with Nutanix. AFC is a tool that provides automation and orchestration for managing data center networks composed of ArubaOS-CX switches. AFC can integrate with various data center software such as VMware vSphere, Nutanix AHV, Microsoft Hyper-V, etc. AFC can discover, monitor, and configure Nutanix AHV clusters and hosts using REST APIs. AFC can also automate the provisioning of LAGs between AHV and VSX by creating VSX LAGs or MC-LAGs on the ArubaOS-CX switches and configuring the corresponding LAGs on the AHV hosts1.

Correct Answer: B

NetEdit 2.0 is a network management tool that allows you to configure, monitor, and troubleshoot ArubaOS-CX switches. NetEdit 2.0 can discover switches using different methods, such as IP range scan, LLDP neighbors, or manual entry. After it discovers a switch, NetEdit 2.0 does not enable SNMP on the switch, if disabled. SNMP is a protocol that allows NetEdit 2.0 to collect information and statistics from the switches, but it is not required for discovery or management. NetEdit 2.0 can use other protocols, such as REST API or SSH, to communicate with the switches1. Therefore, this is not something that NetEdit 2.0 does after it discovers a switch.

Correct Answer: A

Use a firmware update plan to manage both updating the Image on selected devices and reboot is part of the process for using NetEdit to update firmware on ArubaOS- CX switches. NetEdit is a tool that provides automation and analytics for managing ArubaOS-CX switches. A firmware update plan is a type of plan that allows you to update the firmware image on one or more switches and reboot them as needed1.

Correct Answer: A

ERPS is a feature of ArubaOS-CX that prevents loops at layer 2 on ring networks1. ERPS uses a protocol called Ring Auto Protection Switching (RAPS) to detect link failures and perform fast traffic switchover1. ERPS has two timers that control the protection switching mechanism: guard timer and hold off timer1. The guard timer prevents false switching caused by delayed or lost RAPS PDUs1. The hold off timer causes ERPS switches to delay unblocking a failed link after the link is restored1. This can be useful to prevent frequent topology changes due to link flapping or network instability1. Therefore, this is a guideline for configuring timers for ERPS, and the correct answer is yes. For more information on ERPS and timers, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet2 and the ERPS Guide for your switch model1.

Correct Answer: A

To reduce the amount of traffic sent over the ISL between Switch-1 and Switch-2, enable active forwarding on LAG 100 on both Switch-1 and Switch-2 is a correct explanation of how to control how core-to-access traffic is forwarded. Switch1, Switch-2, and the router run OSPF on LAG 100, which is a Layer 3 LAG. Active forwarding is a feature that allows a switch to select one link as active and one link as standby for each direction of traffic in a LAG. Enabling active forwarding on LAG 100 on both Switch-1 and Switch-2 would reduce the amount of traffic sent over the ISL by sending traffic over only one link instead of both1.

Correct Answer: B

Ring 1, instance 1: control VLAN: 1000protected VLANs: 51-135 Ring 1,Instance2: control VLAN: 1001 protected VLANs: 136-220 Ring 2, Instance 1: control VLAN: 1000 protected VLANs: 181 -200 Ring 2, Instance 2: control VLAN: 1003 protected VLANs: 201 -220 is not a valid design for the control and protected VLANs on the VSX fabric 1 switches for an Ethernet Ring Protection Switching (ERPS) solution. The control VLANs must be unique for each ring instance and must not overlap with any protected VLANs. In this design, the control VLAN 1000 is used for both ring 1 instance 1 and ring 2 instance 1, which can cause conflicts and errors. Also, the protected VLANs 181-220 are used for both ring instances on ring 2, which can cause loops and traffic duplication2.

Correct Answer: B

You can only leak routes between up to three VRFs is not a rule for the setup of multi-protocol BGP to implement dynamic VRF route leaking on an ArubaOS-CX switch. There is no limit on the number of VRFs that can participate in route leaking using multi- protocol BGP. You can configure multiple import and export route targets for each VRF and leak routes between any VRFs that have matching route targets1.

Correct Answer: B

The Virtual Switching Extension (VSX) is a high availability solution that provides industry-leading performance and simplicity for campus and data center networks

1. VSX does not implement a single control plane for the core fabric, but rather a dual control plane that allows independent software upgrades and configuration changes on each switch2. VSX also provides active-active forwarding and load balancing across both switches, eliminating the need for Spanning Tree Protocol (STP) or other loop prevention mechanisms2. Therefore, this is not a use case for implementing VSX at the core. Reference: https://www.arubanetworks.com/

assets/tg/TB_VSX.pdf

Correct Answer: B

Switch-1 does not download its MAC forwarding table from Switch-2 when Switch-2 finishes booting. Switch-1 and Switch-2 are part of a VSX fabric, which is a high availability solution that provides redundancy and load balancing across a pair of switches1 . When Switch-2 experiences a power failure, Switch-1 takes over the role of the primary member and continues to forward traffic1. When Switch-2 recovers, it synchronizes its configuration and state information from Switch1, not the other way around1. The MAC forwarding table is part of the state information that is synchronized from the primary to the secondary member1.