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và có tất cả làm việc đáng tin cậy là một kỳ công đáng ngưỡng mộ. Các tập tin readme có sẵn trên trang Web NYCWireless là một kho tàng thông tin. Hãy chắc chắn để đọc nó chặt chẽ, khi bạn bắt đầu để khám phá nhiều tính năng mạnh mẽ của Pebble. | 198 Chapter 7 Monitoring Your Network graph you can view. This build on demand approach uses resources very efficiently. Cacti also has an option to generate graphs at regular intervals which can be useful when built into static Web pages. Cacti uses the MySQL database to store all the settings it receives via the Web interface. All the device information requested graphs and templates are stored in the database. Using a database allows Cacti to easily devise the appropriate graph generating command and polling commands. Additional References There are many more tools available for monitoring systems. Google has two useful directory pages at http directory.google.com Top Computers Internet Protocols SNMP and at http directory.google.com Top Computers Software Networking Network_Performance RMON_and_ SNMP . The next level of monitoring tool provides notification via e-mail or pager of unusual network events such as a server that no longer responds or monitored values moving outside of specified limits. Some good starting points include the following Nagios www.nagios.org Big Brother http bb4.org http directory.google.com Top Computers Qpen_Source Software Internet Monitoring www.syngress.com Chapter 8 Low-Cost Commercial Options Topics in this Chapter Sputnik Sveasoft MikroTik 199 200 Chapter 8 Low-Cost Commercial Options Introduction Community wireless networks can be created using a variety of funding scenarios. Sometimes a project will have a sponsor who will pay for hardware costs. Other times a project has no funding source whatsoever and operates on a shoestring budget. This book outlines many open-source and free options that are available to help deploy a wireless network. However a free solution is not necessarily always the best solution as every installation is unique and no one solution is best for all deployments. However having a project sponsor does provide some flexibility and more options for hardware and software. While open source does have many .
