The school is a comprehensive college of higher education, with over 8,300 students and over 5,000 users.
II. Product selection:
In the selection of products, Shenyang Shian teacher training university has been based on several considerations, in addition to normal dialling and billing:
1. Gateway support for NAT function: construction costs can be reduced by a significant margin
2. Flexible and diverse costing strategies: Meeting the diversified management needs of Internet access charges for students on campus networks, especially their online billing functions, allows customer entry first, the generation of cards, sale to users, and the start-up of time-counting at the first point of access, which greatly facilitates the Internet demand of a particular group of students.
3. Various certification methods, very expansive: NatShell can be billed using such authentication techniques as WEB, PPOE, 802.1x to meet later expansion needs.
4. Distributed cluster networks, sustainable development: distributed access and centralized management ensure smooth system upgrades to maximize investment returns.
5. Support for the notification function: to facilitate the publication of information and advertisements, and also to provide advance notice of renewal due and then to a designated address.
6. (b) Restricted access to the Internet: control of students ' use of routers for sharing the Internet, safeguarding bandwidth and increasing operating income.
After a comprehensive comparison, Shenyang Teachers College eventually chose to use NATSHEL_BRADNS-G50 Authentication & Billing and BRAS-500-20 gateway products for broadband operation and billing.
III. Network architecture
· The outer network uses telecommunications fibre-optic lines to access the central office.
· Extranet fibre-optic access NatShell BRAS-500-20 gateway equipment
· Giga Management Centre under gateway equipment Switches, common movies, games, downloads and other servers are connected to the central switch
· Central switchboards are divided into VLAN sub-houses and port isolation on the condolence switch
· Second-level switch access to student dormitories via the network, and all user management is remotely managed through office computers
The toptops are as follows:
The following results have been achieved as a result of the implementation of the project:
1 The conversion of BRAS equipment to NAT has significantly reduced the cost of equipment acquisition.
2 VLAN, whether it is a BRAS gateway or a user dial-up, has been divided into VLANs, which divides an urban area network into smaller broadcasting areas, thus preventing large amounts of radio packages from affecting users ' access to the Internet.
3 The increase in the number of users will require simply adding a BRAS gateway device, allowing the system to be less expensive and more accessible, truly on demand and avoiding waste.
4 The account number concept was established, with each individual among the users of the entire network as an independent individual, and all billing and management were based on accounts.
5 The account number can be tied to the user computer MAC and effectively prevent its misappropriation.
6 The use of routers for sharing Internet access is limited, resulting in savings in bandwidth and higher rates of fees.
7 The same account number allows only one user to log in at the same time, ensuring that the user uses it exclusively.
8 Support for the PPPOE and PPTTP-based user login models not only supports traditional PPPOE authentication but also allows, in exceptional circumstances, users to assign a PPTP-based user account to share the same system, which enhances the flexibility of the system.
9 Different fee packages, such as 1M year, 2M for six months, free property accounts, test accounts etc., have been developed to accommodate the needs of different users and can be easily converted between different packages, depending on user needs and publicity.
10 The function of alerting and the advance notification of users when due is supported to enable users to know their forthcoming fees in advance, effectively avoid the distress caused by the downtime of users, increase the rate of renewal and improve user satisfaction.
11 For special users, the time-counting function is supported after opening an account and starts when you get online for the first time.
12 The establishment of user alerts to support online search fees on multiple terms and conditions would force online users offline, preventing possible arrears.
13 Support for bulk opening and sales allows students to move without affecting the network operations and reducing the workload of the network centres.
14 The generation of different reports on demand not only generates text but also graphics, which provide a strong basis for management to easily analyse opening accounts and use them.
Operational summary:
On the basis of the operation of the Shenyang Teacher Training University, which is fast-tracked and flexible in its billing methods and services available, and which attracts a large number of users soon, NATSHEL_BRAND has also set up some flow for fee-splitting, including the time-counting function to better meet operational needs, based on the characteristics of Shen Yang Teachers' College.