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Two ArubaOS-CX switches ate part of a Virtual Switching Extension (V5X) fabric. Is this a guideline for configuring the switches' link-up delay settings?
Solution: The link-up delay timer is only required when split-recovery is disabled.
Answer : B
Virtual Switching Extension (VSX) is a high-availability technology that allows two ArubaOS-CX switches to operate as a single logical device. VSX link-up delay is a feature that delays bringing downstream VSX links up, following a VSX device reboot or an ISL flap. This prevents traffic blackholing or loops due to transient conditions. The link-up delay timer is not only required when split-recovery is disabled. Split-recovery is another feature that prevents traffic blackholing or loops when the ISL link fails and then recovers. Split-recovery works by disabling the secondary VSX member's downstream links until it synchronizes with the primary member. However, split-recovery does not cover all scenarios where traffic blackholing or loops can occur, such as when both VSX members reboot simultaneously or when the ISL flaps rapidly.Therefore, it is recommended to configure the link-up delay timer even when split-recovery is enabled1. Therefore, this is not a valid guideline for configuring the switches' link-up delay settings.
Is this a use case for disabling split-recovery mode on ArubaOS-CX switches in a Virtual Switching Extension (VSX) fabric?
Solution: In situations in which the primary switch fails and then reboots, you want to make the primary switch wait a period before it takes over as the primary switch.
Answer : B
Virtual Switching Extension (VSX) is a high-availability technology that allows two ArubaOS-CX switches to operate as a single logical device. Split-recovery mode is a feature that prevents traffic loss when the Inter-Switch Link (ISL) goes out-of-sync and keepalive subsequently fails. When split-recovery mode is enabled, the secondary VSX member disables its downstream links until it synchronizes with the primary member.When split-recovery mode is disabled, the secondary VSX member keeps its downstream links up even when it is out-of-sync with the primary member1. Disabling split-recovery mode does not affect how the primary switch waits a period before it takes over as the primary switch after a failure and reboot. The primary switch always takes over as the primary switch immediately when it comes back online, regardless of the split-recovery mode setting.To make the primary switch wait a period before it takes over as the primary switch, you need to configure a preemption delay on both VSX members1. Therefore, this is not a use case for disabling split-recovery mode on ArubaOS-CX switches in a VSX fabric.
Is this a rule for configuring schedule profiles on an ArubaOS-CX switch?
Solution: If the profile mixes strict priority scheduling with another scheduling algorithm, the strict priority queue must be the highest numbered queue.
Answer : A
A schedule profile is a feature of ArubaOS-CX that determines the order and service of queues for transmission123.A schedule profile must be configured on every interface at all times23.The switch supports three scheduling algorithms: Guaranteed Minimum Bandwidth (GMB), Strict, and Strict EQS23.Strict scheduling gives absolute priority to a queue over other queues, regardless of the bandwidth allocation23.If the profile mixes strict priority scheduling with another scheduling algorithm, the strict priority queue must be the highest numbered queue23. Therefore, this is a rule for configuring schedule profiles on an ArubaOS-CX switch, and the correct answer is yes.For more information on schedule profiles and QoS, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet1and the QoS Guide for your switch model23.
Refer to the exhibit.
You need to set up an ArubaOS-CX switch to implement Virtual Extensible LAN (VXLAN) WITHOUT Ethernet VPN (EVPN). The exhibit Indicates which servers should be part of the same VXLANs and the desired VNls for the VXLANs. Assume that the network is already configured to permit each ArubaOS-CX switch to reach each other switch's loopback interface.
Is this part of the process for setting up VXLAN to meet the requirements?
Solution: On Switch-1, create two VXLAN interfaces, one with ID 5010 and one with 1D 5020; both VXLAN interfaces should use 192.168.1.1 as the source IP address.
Answer : A
VXLAN is a feature of ArubaOS-CX that provides layer 2 connectivity between networks across an IP network1.VXLAN uses a 24-bit identifier called VXLAN Network Identifier (VNI) to segment the layer 2 domain1.VXLAN also uses a tunnel endpoint (VTEP) to encapsulate and decapsulate VXLAN packets1.A VXLAN interface is a logical interface that represents a VNI and is associated with a source IP address and a VRF1.To set up VXLAN without EVPN, you need to create VXLAN interfaces on each switch and configure static VTEP peers1. Based on the exhibit, Switch-1 needs to create two VXLAN interfaces, one with ID 5010 and one with ID 5020, to match the VNIs of the servers connected to it. Both VXLAN interfaces should use 192.168.1.1 as the source IP address, which is the loopback interface of Switch-1. Therefore, this is part of the process for setting up VXLAN to meet the requirements, and the correct answer is yes.For more information on VXLAN and EVPN, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet2and the EVPN VXLAN Guide for your switch model1.
Refer to the exhibit.
You need to set up an ArubaOS-CX switch to implement Virtual Extensible LAN (VXLAN) WITHOUT Ethernet VPN (EVPN). The exhibit Indicates which servers should be part of the same VXLANs and the desired VNls for the VXLANs. Assume that the network is already configured to permit each ArubaOS-CX switch to reach each other switch's loopback interface.
Is this part of the process for setting up VXLAN to meet the requirements?
Solution: On Switch-1, add VNIs 5010 and 5020 to the same VXLAN interface.
Answer : B
VXLAN is a feature of ArubaOS-CX that provides layer 2 connectivity between networks across an IP network1.VXLAN uses a 24-bit identifier called VXLAN Network Identifier (VNI) to segment the layer 2 domain1.VXLAN also uses a tunnel endpoint (VTEP) to encapsulate and decapsulate VXLAN packets1.A VXLAN interface is a logical interface that represents a VNI and is associated with a source IP address and a VRF1.To set up VXLAN without EVPN, you need to create VXLAN interfaces on each switch and configure static VTEP peers1. Based on the exhibit, Switch-1 needs to create two VXLAN interfaces, one with ID 5010 and one with ID 5020, to match the VNIs of the servers connected to it.However, you cannot add multiple VNIs to the same VXLAN interface1.Each VNI must have its own VXLAN interface with a unique source IP address and VRF1. Therefore, this is not part of the process for setting up VXLAN to meet the requirements, and the correct answer is no.For more information on VXLAN and EVPN, refer to the Aruba Data Center Network Specialist (ADCNS) certification datasheet2and the EVPN VXLAN Guide for your switch model1.
