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Cyclic redundancy check (CRC) is a common data transmission error detection technique commonly used in the data communication field. The transmit end calculates a check code for the data in a data frame based on a certain algorithm, appends the check code to the data frame, and sends the data frame to the receive end. The receive end verifies the correctness and integrity of the received data by repeating the calculation using the same algorithm.
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WiFi 7 (Wi-Fi 7) is the next-generation Wi-Fi standard to be launched, also known as IEEE 802.11be — extremely high throughput (EHT).
Based on Wi-Fi 6, Wi-Fi 7 introduces technologies such as 320 MHz bandwidth, 4096-quadrature amplitude modulation (QAM), multiple resource unit (MRU), and multi-link operation (MLO). Drawing on these cutting-edge technologies, Wi-Fi 7 delivers a higher data transmission rates and lower latency than Wi-Fi 6. Wi-Fi 7 is expected to support a throughput of up to 23 Gbps, about three times that of Wi-Fi 6.
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Bidirectional Forwarding Detection (BFD) is a fast fault detection mechanism based on RFC 5880. After a BFD session is established between two systems, BFD packets are periodically sent over the path between the two systems. If one system does not receive BFD packets within a specified period, a fault has occurred on the path. After detecting the link fault through BFD, the upper-layer protocol can take measures to promptly rectify the fault.
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IPoE is an access authentication technology that enables a user to access a network after dynamically obtaining an IP address through Dynamic Host Configuration Protocol (DHCP). It provides a flexible and efficient access control mode. User terminals can access the network without needing to install dedicated client software. IPoE is applicable to access of various network devices, such as smartphones, digital TVs, and PSPs.
The simple and fast access provided by IPoE reduces the maintenance workload of clients and facilitates the expansion of carrier services on authentication pages, such as advertisement pushes, slogan promotions, and relevant announcements. IPoE access is widely used on networks of chain hotels, campuses, railway stations, and more.
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VXLAN, or Virtual Extensible LAN, is a network virtualization technology widely used on large Layer 2 networks. VXLAN establishes a logical tunnel between the source and destination network devices, through which it uses MAC-in-UDP encapsulation for packets. Specifically, it encapsulates original Ethernet frames sent by a VM into UDP packets. It then encapsulates the UDP packets with the IP header and Ethernet header of the physical network as outer headers, enabling these packets to be routed across the network like common IP packets. This frees VMs on the Layer 2 network from the structural limitations of the Layer 2 and Layer 3 networks.
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Segment Routing IPv6 (SRv6) is a next-generation IP bearer protocol that combines Segment Routing (SR) and IPv6. Utilizing existing IPv6 forwarding technology, SRv6 implements network programming through flexible IPv6 extension headers.
SRv6 reduces the number of required protocol types, offers great extensibility and programmability, and meets the diversified requirements of more new services. It also provides high reliability and offers exciting cloud service application potential.
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The Cloud Access Security Broker (CASB) is a security solution designed to safeguard enterprises' Software as a Service (SaaS) applications. By serving as a monitoring and control point between users and cloud service providers, CASBs ensure secure data transmission and access control. CASBs provide full visibility into SaaS applications, enabling enterprises to monitor and manage access to these applications to prevent data leakage and non-compliance. CASBs enable fine-grained control of SaaS applications to prevent internal threats, shadow IT, and high-risk data sharing.
CloudCampus is a campus network solution launched by Huawei. The next-generation campus network solution is also called Xinghe Intelligent Campus Solution. Based on the eXperience-centric Network Architecture (XNA), Xinghe Intelligent Campus Solution implements three experience upgrades on campus networks and provides high-quality network services for a range of industries, serving as the preferred choice for campus digital and intelligent upgrade.
Power Line Communication Internet of Thing (PLC-IoT) is an HPLC/IEEE 1901.1-compliant mid-band Power Line Communication (PLC) technology launched for industrial IoT scenarios to transmit data over power lines on low-voltage networks. PLC-IoT eliminates the need to roll out additional communication lines and delivers reliable, secure, and efficient communication in the "last mile" of IoT.
Application-network Quality Measurement (AQM) is a single-end measurement technology that dynamically adjusts the packet sending frequency based on the network quality and simulates application characteristics for proactive detection. It implements application-level refined network quality monitoring as well as real-time and visualized traffic management.
DPCF is a second-level fault recovery technology that provides fast fault awareness and convergence based on the data plane for service session exceptions caused by silent faults, such as link faults, forwarding entry exceptions, and forwarding component exceptions, improving network-level reliability.
A channelized sub-interface is a sub-interface of an Ethernet physical interface with channelization enabled. Different channelized sub-interfaces are used to carry different types of services, and bandwidths are configured based on channelized sub-interfaces to implement strict bandwidth isolation between different channelized sub-interfaces on the same physical interface. This prevents services on different sub-interfaces from preempting each other's bandwidths. Channelized sub-interfaces are used to reserve resources in a network slicing solution. An independent "lane" is planned for each network slice, and "lanes" cannot be changed during transmission of different network slices' service traffic. This ensures strict isolation of services on different slices, and effectively prevents resource preemption between services when traffic bursts occur.
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