H19-338 Questions and Answers

AirEngine is Huawei’s newest brand name of Wi-Fi products. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, Huawei launched its new brand name AirEngine for its Wi-Fi products in April 2019, aiming to provide ubiquitous connectivity, mobility, and intelligence for enterprises.

CloudEngine S5732-H series multi-GE switches do not deliver a switching performance of 1760 Gbit/s. According to the CloudEngine S5732-H Series Multi-GE Switches Datasheet, CloudEngine S5732-H series multi-GE switches deliver a switching performance of up to 336 Gbit/s.

The redundancy design of key components of the S12700E series switches can achieve 99.999% reliability. According to the CloudEngine S12700E Series Switches Datasheet, CloudEngine S12700E series switches support N+1 backup for MPUs, SFUs, CMUs, and power modules, as well as hot swapping for all components, ensuring high availability and reliability.

 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 .

USG6680E, USG6712E, and USG6716E are firewalls that are recommended for data centers. They provide high-performance security protection, virtualization, and cloud management capabilities for data center networks. USG12004 and USG12008 are not firewalls, but routers that are designed for enterprise WANs.

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.

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.

 CloudEngine S7700 switches support service port clustering and CSS2 switch fabric clustering. According to the CloudEngine S7700 Series Switches Datasheet, service port clustering enables multiple physical ports to form a logical port that provides higher bandwidth and link redundancy, while CSS2 switch fabric clustering enables multiple switches to form a logical switch that provides higher performance and simplified management.

Free mobility is supported on a hybrid network consisting of Huawei and third-party devices, and the authentication point can be deployed on third-party devices. According to the Huawei CloudCampus Solution Description, free mobility is a feature that allows users to access network resources without changing their IP addresses or VLANs when they move within a virtual network (VN). Free mobility can be implemented on a hybrid network by using VXLAN tunneling technology and policy association.

The iMaster NCE-Fabric cannot be deployed in a single-node system. According to the iMaster NCE-Fabric Product Overview, iMaster NCE-Fabric is a distributed system that consists of three nodes: the management node, the control node, and the analysis node. The management node provides basic management functions, such as configuration, monitoring, and alarm management. The control node provides control functions, such as VXLAN tunnel establishment and policy association. The analysis node provides analysis functions, such as network health analysis, fault diagnosis, and performance optimization.

The free mobility function allows users to obtain the consistent network access policy regardless of their location and IP address, but it does not require the network to be made up entirely of Huawei devices. According to the Huawei CloudCampus Solution Description, free mobility is supported on a hybrid network consisting of Huawei and third-party devices, and the authentication point can be deployed on third-party devices.

Huawei Wi-Fi 6 products implement 10 ms ultra-fast roaming for all terminals, not only Huawei terminals, by introducing a cache mechanism, ensuring that there is no frame freezing during roaming. According to the Huawei AirEngine Wi-Fi 6 Solution White Paper, Huawei Wi-Fi 6 products use a cache mechanism to store user information on APs and switches, which enables fast authentication and reconnection when users roam between APs. This mechanism is compatible with all terminals that support IEEE 802.11k/v/r standards.

CloudEngine S5736-S supports iStack, which is a technology that allows multiple switches to be connected and managed as a single logical device, improving network scalability and reliability 1. The other features are not supported by the CloudEngine S5736-S. Native AC is a feature of the CloudEngine S7700 series switches that enables them to function as wireless access controllers 2. Free mobility is a feature of Huawei’s Agile Campus Network Solution that enables seamless roaming of wireless terminals 3. VXLAN is a technology that creates overlay networks to extend Layer 2 connectivity across Layer 3 networks 4, but it is not supported by the CloudEngine S5736-S 1.