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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Resiliency and Virtualization | 12% | |
| Topic 2: Performance Optimization | 4% | |
| Topic 3: Switching | 19% | |
| Topic 4: Connectivity | 13% | |
| Topic 5: Troubleshooting | 9% | |
| Topic 6: Security | 13% | |
| Topic 7: Routing | 16% | |
| Topic 8: Network Stack | 4% | |
| Topic 9: WLAN | 10% |
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NEW QUESTION # 73
Which tables arc synchronized between a pair ofCX 8325 switches in a VSX cluster? (Select two.)
Answer: A,E
Explanation:
The question asks which tables are synchronized between a pair of CX 8325 switches in a Virtual Switching Extension (VSX) cluster. VSX is a high-availability solution that synchronizes specific tables to ensure consistent operation across both switches.
* Analysis of Options:
* A. BGP Neighbors:BGP neighbor tables are not synchronized in VSX; each switch maintains its own BGP sessions.
* B. MAC address:Correct. VSX synchronizes the MAC address table to ensure consistent Layer
2 forwarding across both switches.
* C. Spanning-Tree Protocol (STP):STP states are not synchronized; each switch runs its own STP instance, though they coordinate to avoid loops.
* D. IP Routing:Correct. VSX synchronizes the IP routing table to ensure consistent Layer 3 forwarding.
* E. Link Layer Discovery Protocol (LLDP):LLDP information is not synchronized; each switch maintains its own neighbor information.
* Why B and D are Correct:In a VSX cluster, the MAC address table and IP routing table are synchronized to ensure seamless Layer 2 and Layer 3 operations. This synchronization allowsboth switches to share a common view of the network, enabling features like active-active forwarding and hitless failover. The vsx-sync feature in AOS-CX ensures these tables are kept consistent across the VSX pair.
* Relevance to Certification Objectives:
* Network Resiliency and Virtualization (8%):Involves designing and troubleshooting VSX for resiliency and redundancy.
* Switching (19%):Includes implementing and troubleshooting Layer 2 technologies like MAC address tables.
* Routing (16%):Covers IP routing table synchronization in VSX environments.
References:
HPE Aruba Networking AOS-CX Configuration Guide: VSX Configuration, detailing table synchronization.
HPE7-A06Study Guide: Covers VSX architecture and synchronization mechanisms.
HPE Aruba Networking Technical Documentation: VSX Overview, explaining MAC and routing table synchronization.
VSX (Virtual Switching Extension) synchronizes state information between the two switches in a cluster to enable active-active forwarding and provide a single logical view to downstream devices.
Analysis of Options:
A: BGP Neighbors: BGP sessions are typically established independently by each VSX member. While configurations can be synced, the dynamic state/neighbor table itself is not a core VSX synchronization item.
B: MAC address: The MAC address table is synchronized between VSX members. This is crucial for Layer 2 forwarding consistency and allowing either switch to forward traffic destined for a known MAC address learned via the VSX pair.
C: Spanning-Tree Protocol (STP): STP runs independently on each physical switch. VSX uses technologies like MC-LAG to provide loop-free active-active paths downstream, reducing reliance on STP blocking, but the STP state itself isn't synchronized via the ISL.
D: IP Routing: While the full IP routing table (RIB) is built independently on each switch via routing protocols, VSX Active Gateway synchronizes necessary Layer 3 information (like virtual gateway IP and MAC, and potentially ARP entries) to ensure consistent first-hop routing and failover. Some sources might broadly categorize ARP synchronization under L3/IP routing context in VSX. Given that the ARP table (essential for L3 forwarding consistency) is synchronized, and it's not listed separately, "IP Routing" might encompass this synchronization aspect.
E: Link Layer Discovery Protocol (LLDP): LLDP information relates to physically connected neighbors of each switch and is not synchronized across the VSX ISL.
Conclusion: The MAC address table (B) is definitively synchronized. The ARP table is also synchronized, which is fundamental for Layer 3 forwarding consistency provided by Active Gateway. As ARP is not explicitly listed, and "IP Routing" (D) is, D is the most likely second answer intended to cover the necessary L3 state synchronization (primarily ARP and Active Gateway state) performed by VSX.
References: AOS-CX VSX Guide (specifically sections on State Synchronization, ISL, Active Gateway), VSX Fundamentals documentation. This relates to "Network Resiliency and virtualization" (8%) and
"Switching" (19%) objectives.
NEW QUESTION # 74
Two CX 8325 switches are configured as a cluster using VSX for the core role and two CX
6300M in VSF for the aggregation role. When a minor software upgrade is issued on the switches, what is the method to achieve a hitless upgrade with the aggregation switches?
Answer: D
Explanation:
For CX 6300M switches in a VSF (Virtual Switching Framework), the correct method for a hitless (non-disruptive) minor software upgrade is to use the vsf update-software command. The process always upgrades the secondary member first, then the primary, ensuring continuous forwarding and minimizing downtime.
NEW QUESTION # 75
Drag and Drop Question
Match the network technology to the customer requirement.
Answer:
Explanation:
Explanation:
VSX enables active-active link aggregation across switches. VXLAN encapsulates Layer 2 traffic to extend it over Layer 3 networks across sites. VNI (VXLAN Network Identifier) distinguishes Layer 2 segments inside VXLAN overlays. EVPN simplifies configuration and automates control- plane signaling for VXLAN tunnels between sites.
NEW QUESTION # 76
Exhibit.
VSX cluster is already configured. Your task is to validate a correct configuration for the Edge-1 switch that is connected to a CCTV provider that will install its switching infrastructure. The CCTV switches do not support STP.
What needs to be configured on the Edge-1 switch ports connecting to CCTV-SW1 and CCTV-SW2 to prevent loop problems with the existing setup with automatic recovery features?
Answer: A
Explanation:
The requirement is to prevent loops on Edge-1 switch ports connected to third-party CCTV switches that do notsupport STP. The solution must also include an automatic recovery feature if a port gets disabled.
* Loop Prevention without STP:When connecting to non-STP devices, standard STP loop prevention (like BPDU Guard) might not work if the connected device doesn't send BPDUs. AOS-CX offers a feature called loop-protect which sends probes to detect loops in non-STP environments.
* Automatic Recovery:Features that disable ports (like BPDU Guard or Loop Protect) often have a timeout or auto-recovery option (port-disable-timer for Loop Protect) allowing the port to automatically re-enable after a configured period.
* Analysis of Options:
* A: LACP fallback applies to LAGs, not general loop prevention.
* B: TCN-guard is an STP feature, irrelevant here.
* C: Suggests spanning-tree with bpdu-guard timeout. BPDU Guard detects loops by listening for BPDUs, which these CCTV switches don't send. However, the timeout featuredoesprovide the required automatic recovery mechanism if the portweredisabled by BPDU Guard.
* D: UDLD detects unidirectional links, not typically bridging loops caused by topology.
* Re-evaluation:The ideal AOS-CX feature is loop-protect with port-disable-timer. Since this isn't explicitly an option, we must evaluate the given choices. Option C is theonlyone that mentions a mechanism (bpdu-guard timeout) providing automatic recovery from a disabled state. While BPDU Guard isn't the right detection mechanism here, it's the closest fit regarding the auto- recoveryrequirement. It's possible the question implicitly assumes some stray BPDUs might trigger it or that it's the intended "best fit" answer despite the detection mechanism mismatch.
* Conclusion:Given the options, Option C is the most plausible because it includes the timeout feature associated with bpdu-guard, fulfilling the automatic recovery requirement, even though BPDU guard itself is not the ideal detection method for loops involving non-STP devices.
References:AOS-CX Spanning Tree Protocol Guide (BPDU Guard, Timeout), AOS-CX Interface Configuration Guide (loop-protect feature). This relates to "Switching" (19%) and "Network Resiliency and virtualization" (8%) objectives.
NEW QUESTION # 77
Refer to the four numborod slops in the exhibit.
Which action is the fourthstep in applying a role-to-role ACL on thetraffic from mobile device M1 to roleH2?
Answer: B
Explanation:
The question asks for the fourth step in applying a role-to-role ACL on traffic from a mobile device (M1) to a role (H2) in a network using Dynamic Segmentation with VXLAN. This follows question 17, which identified the first step as the AP forwarding the packet to the gateway.
* Analysis of Options:
* Option A:Correct. The fourth step involves the destination switch (Switch A1) determining the destination role (H2) based on the destination MAC or IP address and applying the role-to-role ACL to permit or deny the traffic.
* Option B:Describes an earlier step (likely second or third) where the gateway forwards traffic over a VXLAN tunnel.
* Option C:Describes the first step, as identified in question 17.
* Option D:Describes an intermediate step (likely third) where the edge switch transfers the Group Policy ID over VXLAN.
* Why Option A is Correct:In HPE Aruba Networking's Dynamic Segmentation architecture, the traffic flow for role-based ACLs in a VXLAN environment follows these steps:
* The AP forwards the packet from M1 to the gateway (question 17).
* The gateway assigns the source role (M1's role) and forwards the packet over a VXLAN tunnel with the Group Policy ID.
* The edge switch transfers the Group Policy ID to the destination switch (A1) via VXLAN.
* Switch A1 determines the destination role (H2) based on the destination MAC or IP address and enforces the role-to-role ACL, as defined in the Group-Based Policy (GBP).
The fourth step is critical for policy enforcement, ensuring that traffic complies with the security policies defined between the source and destination roles, providing secure network segmentation.
* Relevance to Certification Objectives:
* Security (10%):Designing and troubleshooting role-based security policies in customer networks.
* Switching (19%):Implementing Layer 2/3 interconnection technologies like VXLAN for policy enforcement.
* WLAN (9%):Troubleshooting wireless traffic flows in Dynamic Segmentation.
References:
HPE Aruba Networking AOS-10 Configuration Guide: Dynamic Segmentation and VXLAN, detailing role- based policy enforcement.
HPE7-A06Study Guide: Covers Group-Based Policy and Dynamic Segmentation workflows.
HPE Aruba Networking Technical Documentation: Tunneled Node and Role-Based ACLs.
NEW QUESTION # 78
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