H19-338 HCSP-Presales-Storage Questions and Answers

BGP EVPN is a control plane protocol that can be used for VXLAN networks . VXLAN is a technology that creates overlay networks to extend Layer 2 connectivity across Layer 3 networks . BGP EVPN has the following functions as a VXLAN control plane protocol:

It automatically establishes the VXLAN tunnel between VTEPs (VXLAN Tunnel Endpoints), which are devices that encapsulate and decapsulate VXLAN packets . You do not need to manually configure a full-mesh tunnel between all VTEPs, which reduces the configuration complexity and improves the scalability .

It advertises host routes and MAC address entries on the control plane, which are used to learn the location of hosts and their corresponding VTEPs . This reduces the unknown traffic flooding that occurs when the destination MAC address is unknown, and optimizes the packet forwarding by using optimal paths .

It implements Layer 2 interconnection between data centers in different networking modes, such as bridging, routing, or integrated routing and bridging (IRB) . This enables seamless communication between hosts in different subnets or VLANs across data centers .

It advertises subnet routes to implement Layer 3 interconnection of data centers through VXLAN tunnels . This enables routing between different subnets or VLANs across data centers without requiring an external gateway device .

 NE8000 X4 and X8 are high-end core routers designed for large-scale IP backbone networks, data centers, and metro networks . They support various redundancy designs to ensure high availability and reliability, such as MPU (Main Processing Unit) 1+1 backup, SFU (Switch Fabric Unit) 7+1 backup, and PEM (Power Entry Module) 1+1 backup . MPU 1+1 backup means that two MPUs work in active/standbymode and provide control plane redundancy . SFU 7+1 backup means that eight SFUs work in N+1 mode and provide data plane redundancy . PEM 1+1 backup means that two PEMs work in active/standby mode and provide power supply redundancy . The NE8000 X4 and X8 do not support power supply 9+1 backup, which is a feature of the NE8000 X16 router .

Huawei ranked No.1 in the Wi-Fi 6 standard working group in the number of proposals. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, Huawei has submitted more than 240 proposals to the IEEE 802.11ax (Wi-Fi 6) standard working group, accounting for 15% of all proposals.

Huawei partners should establish a cyber security assurance system to ensure the cyber security of customers. According to the Huawei Cyber Security Assurance System White Paper, Huawei partners are required to comply with Huawei’s cyber security requirements and standards, implement cyber security management processes and controls, conduct cyber security audits and assessments, and report cyber security incidents.

NE8000 M14 cannot be deployed in a 300 mm-deep cabinet. According to the Huawei NetEngine 8000 M14 Routers Support Guide1, the NE8000 M14 requires a cabinet with a depth of at least 800 mm.

The built-in LAN ports on all Huawei NetEngine AR6000/600 series routers can be used as WAN ports. According to the NetEngine AR6000 Series Enterprise Routers Product Overview, NetEngine AR6000/600 series routers support flexible WAN/LAN port configuration, which allows users to use any built-in LAN port as a WAN port.

Huawei CloudFabric solution has been awarded Gartner’s “Customer Choice” three times by March 2021. According to the Huawei CloudFabric Solution Wins Gartner Peer Insights Customers’ Choice for Third Consecutive Year article, Huawei CloudFabric solution received this honor in 2019, 2020, and 2021.

NE8000 M1A and F1A are not both 220 mm deep. According to the Huawei NetEngine 8000 M14 Routers Support Guide, NE8000 M1A is 220 mm deep, but NE8000 F1A is 400 mm deep.

The CloudEngine 16800 series switches do not support 4, 8, 12, and 16 LPU slots. According to the CloudEngine 16800 Series Data Center Switches Datasheet, CloudEngine 16800 series switches support three models: CE16804 (4 LPU slots), CE16808 (8 LPU slots), and CE16816 (16 LPU slots). There is no model that supports 12 LPU slots.

Compared with common Ethernet, the NOF+ scenario greatly improves usability and reliability. According to the Huawei CloudFabric Data Center Network Solution White Paper, NOF+ (Network-Oriented Fabric+) is a data center network architecture that supports both Layer 2 and Layer 3 connectivity between servers and leaf nodes. NOF+ uses VXLAN technology to create overlay networks on top of theunderlay network, which improves network scalability, flexibility, and security. NOF+ also uses M-LAG technology to provide link redundancy and load balancing between leaf nodes and servers, which improves network availability and performance.

CloudCampus Solution is a cloud-based network management platform that provides plug-and-play of devices using three common deployment modes: QR code scanning for deployment, DHCP Option 148, and registration query center deployment . QR code scanning for deployment allows users to scan the QR code on the device label using a mobile app and automatically add the device to the cloud platform . DHCP Option 148 allows devices to obtain the cloud platform address from a DHCP server and automatically register with the cloud platform . Registration query center deployment allows devices to obtain the cloud platform address from a registration query center server and automatically register with the cloud platform . These deployment modes simplify the network configuration and management process and reduce the OPEX .

SmartRadio is a technology that provides intelligent radio resource management for wireless networks. SmartRadio includes several features, such as Dynamic Frequency Assignment (DFA), which automatically adjusts the frequency allocation based on the interference situation; Intelligent load balancing, which distributes users among APs based on user density and traffic load; and Airtime fair scheduling, which allocates airtime resources fairly among users with different rates. Enhanced distributed channel access (EDCA) is not a feature of SmartRadio, but a standard mechanism defined by IEEE 802.11e to provide QoS differentiation for wireless multimedia applications.

M-LAG (Multi-Chassis Link Aggregation Group) is the recommended networking mode for leaf switches. According to the Huawei CloudFabric Data Center Network Solution White Paper, M-LAG enables multiple leaf switches to form a logical device that provides high availability, load balancing, and simplified management.

Free mobility cannot be deployed for traffic between VNs. Free mobility is supported only for policies in a VN. Communication between VNs can be directly implemented on the border node or through the external firewall. Free mobility is a feature that allows users to access network resources without changing their IP addresses or VLANs when they move within a VN. Communication between VNs requires inter-VN routing or firewall policies to ensure security and isolation.