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The campus network has been developed for many years and has experienced three stages: interconnected campus network, 10G campus network, and digital campus network. It carries multiple services such as teaching, office, and scientific research. Its complexity and forward-looking nature have always led the development trend of campus network.
Old problems and new challenges
The development of campus network is accompanied by various problems and threats. Solving these problems and threats is the process of campus network evolution and the driving force for the continuous improvement of campus network. Campus network bandwidth pressure, integration requirements, security issues, IPv6 bottlenecks, and operational requirements are the five major problems in the development of campus networks today.
Bandwidth pressure is the core problem of campus networks. During the “Eleventh Five-Year Plan” period, many 211 and 985 key colleges and universities have expanded their enrollment on a large scale, expanded their infrastructure, and established branch campuses; ordinary colleges and universities at the provincial and municipal levels have also launched mergers and integrations to improve their comprehensive strength; The establishment has also expanded the overall scale of the campus network; in addition, data centers, multimedia, Internet and other services have become increasingly complex, especially P2P, video content and large throughput data have become the main body. Whether it is campus network, campus network intranet bandwidth demand, export bandwidth demand, and cross-branch interconnection bandwidth demand has increased geometrically. For example, a campus network backbone 10G core ring has an average bandwidth occupancy rate of more than 70%, and 1G outlets are fully loaded most of the time. Therefore, it is imperative to upgrade and expand the bandwidth at all levels of the campus network.
With the growth of demand for services such as the Internet, multimedia, IPv6, and high-performance computing, how to distinguish rich services such as office, teaching, Internet, IPv6, and multimedia, and how to access intranet users, extranet users, and VPN access? The seamless integration of users to carry out secure billing, authentication, access control, and reasonable bandwidth allocation requires the campus network to be more intelligent on the basis of digitization. The state proposes that all walks of life carry out energy conservation, environmental protection, consumption reduction and emission reduction work. Operators and some government networks have already taken the lead, and campus networks are bound to face a new round of “green” upgrades.
Enhance the value of campus network
In response to the above problems, ZTE’s new generation low-carbon smart campus network solution proposed “40G backbone 10G convergence Gigabit/100M to desktop wireless full coverage IPv4/IPv6 dual stack operation” and flat network architecture design to assist education network users Smooth upgrade and expansion, comprehensively enhance the value of the campus network, and enhance the overall strength of the school.
To solve the core problem of campus network bandwidth pressure, the first thing to bear is the need to upgrade the campus network core backbone layer bandwidth from 10G or 1G on the existing network to 40G, and it can smoothly evolve to a 100G backbone. On June 17, 2010, the IEEE approved 40/100G. The IEEE 802.3ba standard for Ethernet. ZTE follows international standards. The new generation of ZXR10 8900E series core switches can provide online deployment of 40G ports and support a smooth upgrade of 100G.
Turn on the network ultra-high-speed engine
ZTE’s new-generation low-carbon smart campus network solution recommends the use of fast self-healing ring technology ESRP (Ethernet Smart Ring Protocol) to provide less than 50ms of convergence for the backbone layer design of large and medium-sized campus networks. Several ZXR10 8900Es are deployed in various office buildings, dormitories, branches, libraries, and branch campuses to connect to the ring network with 40G ports. It is recommended to connect the intelligent security ZXR10 5100E gigabit or ZXR10 2900E 100M access switches directly to the entire network. Form a flat network architecture. The premise of the flat architecture is that the core layer equipment has sufficiently powerful performance and higher port density to provide better support for multiple services. The second point is that the access layer equipment has higher security, and the entire network can protect the entire network. The prevention and control moved down to the edge.
The hardware architecture of ZXR10 8900E is based on 400G platform design, 320G, 480G ┅ one-way single-slot evolution plan. Provide 320G unidirectional single-slot switching capacity, support 8 40G, 3 100G port line-speed capabilities, and subsequent seamless and smooth upgrades.
ZXR10 8900E is the industry’s first multi-dimensional security model, which is a five-level model of security architecture, security management and control, security operating system, security computing, and security business:
Security architecture: control the redundant hot backup of the forwarding engine, support fast main-standby switching, support power supply, fan, clock redundancy backup and intelligent detection, control, alarm, all devices support hot swap
Security management and control: the three planes of control, monitoring, and forwarding are separated to provide optimal equipment stability
Safe operating system: functional modularity, intelligent dynamic loading, multi-module parallel, flexible superposition of new functions, software realizes intelligent dormancy in a progressive process, and guarantees uninterrupted business upgrades
Safe computing: Based on multi-core CPU, it provides multi-threaded parallel high-performance computing to ensure seamless connection of multiple planes
Security services: Complete support for Layer 5 HQoS, NSF, GR for OSPF BGP IS-IS LDP RSVP, LACP, ESRP, ZESS, VRRP+, OAM, BFD for OSPF BGP IS-IS LDP RSVP VRRP VPLS LSP, ECMP, IP FRR, DPI , MPLS OAM, MPLS TE FRR and other technologies
The core technology of ZXR10 8900E is VCS (Virtual Cluster System). Multiple devices are virtualized as one logical device and one IP, which improves the cluster system capacity and port density, simplifies the topology, and is easy to manage. The 8900E provides the industry’s highest port density, with a maximum of 576 10G ports and 96 40G ports. At the same time, the 8900E supports data center technologies such as FCoE, Multi-link Transparent Interconnection (TRILL), and Data Center Bridging (DCB). The above leading technologies enable ZXR10 8900E to sit firmly at the core of “cloud computing”.
Low carbon
ZTE’s new generation of low-carbon smart network solutions fully embodies the low-carbon concept from network architecture design, product design and manufacturing, packaging and transportation, equipment installation, and simple operation and maintenance:
Network architecture design try to flatten the entire network, reduce layers, and reduce additional losses
The core components of the product adopt self-developed 40nm process high-integration chips, reasonable PCB layout, comply with domestic and foreign RoHS standards, optimize the heat dissipation design of the single board and the whole machine, and use high-efficiency switching power supplies
The equipment adopts an intelligent energy consumption control system.The operating system energy consumption control module is based on IEEE 802.3az EEE and other technologies to complete infinitely variable fan speed, line card intelligent start, power supply intelligent power supply, process intelligent sleep, business intelligent adjustment, etc., and the continuous “performance (function)/energy consumption ratio” is the best good
Renewable, biodegradable and environmentally friendly packaging and transportation materials are used to embody the concept of “green earth, caring for nature” everywhere
New products’ easy maintenance, easy management and other features maximize the efficiency of installation, commissioning, operation and maintenance, and increase user OPEX
wisdom
ZTE’s innovative intelligent and reconfigurable network architecture fully demonstrates IT wisdom:
Reconfigurable services: support full-featured, multi-service jigsaw stacking to achieve rapid service deployment, such as overlaying IPv6 on an IPv4 network to achieve a smooth migration to a dual-stack network to protect user investment; core and convergence equipment supports data centers and clouds Technology, can carry “cloud” business; can carry “Internet of things” business, perceive every corner of the campus network through sensors
Reconfigurable equipment: unified network equipment architecture, unified platform, modular hot-swappable design, reduced component types and other advanced system architectures; software modularization, intelligent dynamic loading, multi-module parallelism, flexible overlay of new functions, and software implementation Intelligent dormancy in a progressive process to ensure uninterrupted business upgrades
Reconfigurable architecture: provide 40G core, 10G convergence, Gigabit to desktop commercial deployment, upgrade to 100G backbone at any time; support high-reliability Ethernet ring network technology, provide less than 50ms convergence, and support multi-ring nesting scenarios; support MPLS VPN, VPLS, VPLS to the edge or to the convergence scenarios, to achieve physical-level security business isolation
ZTE’s “New Generation Low-Carbon Smart Campus Network” seamlessly upgrades all aspects of the network system on the basis of a digital campus. Provides a 40G backbone layer, a flat and simple structure that combines three authentications of 802.1x, WEB, and PPOE, and online deployment capabilities from MPLS VPN to convergence. And, intelligently upgrade to a 100G backbone at any time to carry “cloud” and “Internet of things” services. All network equipment of the “New Generation Low-Carbon Smart Campus Network” embodies green design in terms of hardware, software, and business systems, and combines features such as environmentally friendly packaging, transportation, and simple operation and maintenance to assist schools in realizing a low-carbon network.
In short, the “new generation of low-carbon smart campus network” possesses the breadth and depth of a traditional multi-in-one digital campus, achieving credibility, controllability, and forensics. It is also a smart and low-carbon network.
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