Wireless Coverage Areas
While wireless Ethernet has been available for a number of years, recent developments have combined to significantly increase its popularity. Performance, at 11 Megabit/second, is comparable to the average wired connection. The cost is now reasonable, with wireless interface cards approaching $100 and manufacturers beginning to build wireless capability into laptops. Perhaps most importantly, the increasing popularity of laptops and PDAs is creating a strong demand for wireless connectivity.
Information Technology Services believes that while it is not likely to replace the existing wired network, there will be significant demand for campus wireless service over time. Unlike corporate environments much of Yale's population, especially students and faculty, is quite mobile, ranging across many areas of the campus in the course of a day. Increasingly, they have with them laptops and PDAs. The ability to be connected to the Campus Network and Internet from almost anywhere on campus could significantly increase productivity and creativity.
As a result of a generous donation by alumni Norman Selby TD '74 and Melissa Vail MC '74, ITS initiated a pilot project in January 2001 to provide wireless network access in designated public spaces in Berkeley and Calhoun Colleges, Sterling Memorial and Cross Campus Libraries, the Cross Campus Lawn, and the Computer Science and Engineering departments. Because this was a relatively new technology, the pilot also provided for the loan of a limited number of wireless network cards to Berkeley and Calhoun students and some faculty.
of the pilot has led to significant expansion funded by DNO and School/Department
operating budgets in addition to continued funds from the original Selby/Vail
donation. Wireless technology continues to evolve rapidly, with decreasing
costs and improved performance. ITS has developed a strategy
and policy that attempts to meet present demand for wireless service
in a rapidly changing environment.
All Yale Students, Faculty, and Staff may use the wireless network. In order to access the network, you will need a wireless PC card LAN adapter for your laptop computer (and, obviously, an available PC card slot on the computer).
The Yale Wireless Network utilizes equipment based upon the IEEE 802.11b standard. The standard currently provides shared LAN access at 11 Megabits/second. Any wireless LAN adapter certified as 802.11b compliant by the Wireless Ethernet Compatibility Alliance should work with the Yale Wireless Network.
ITS has successfully tested the following adapters:
For Windows systems:
For MacOS systems:
These cards are available for personal or Yale Departmental purchase from CDW and Apple via the Yale ePortal purchasing system.
Once you've installed the wireless LAN card in your computer following the manufacturer's directions you'll need to configure it with the Yale "Network Name". Open the configuration utility for your wireless LAN card and set the Network Name (called "SSID" by some manufacturers) to the following: yale wireless
The wireless LAN adapter requires its own IP address separate from the one associated with the computers wired ethernet interface. Registering the wireless LAN adapter with Yale's central DHCP servers allow the adapter to dynamically obtain a proper IP address at any location on campus. If you do not register for DHCP service, you will be able to use resources on the Yale Campus Network but will not be able to access the Internet.
Students may register via the Student Network Registration Page. You may do this in either of two ways:
Faculty and staff will need to contact their local support provider to have the wireless LAN adapter registered for them:
Current wireless technology does not provide dedicated bandwidth per machine as do switched wire networks. The bandwidth available will vary as a function of the number of users in a given coverage area and your machines distance from the wireless transceiver (Access Point).
For these reasons we stress that while providing welcome mobility, wireless networks do not currently provide performance on a par with wired networks. While perfectly acceptable for email and some web browsing it is not suitable for high-demand applications such as video/audio streaming, access to University financial applications, or large file transfers.
Wireless networks also provide a somewhat lower level of security than wired networks. Users should consider wireless networks insecure and take steps to secure passwords and/or utilize the Yale VPN server.
As with the wired network, College Computing Assistants will provide the first line of support. They will attempt to resolve laptop problems and will report network failures or performance issues to ITS Data Network Operations (DNO). DNO will resolve such problems as soon as possible with the caveats that any simultaneous problems with the wired network will take precedence and, given the fact that this is a pilot, we may need or want to perform extended testing before returning the network to service.
Faculty & Staff
Contact your local support provider:
Faculty - http://www.yale.edu/fsp/dcc.html
Staff - http://www.yale.edu/support/dsp
working in wireless mode, you will be able to move between coverage areas
in each building. You will lose and regain connectivity as you move between
the Wireless Access Points. If you to move between buildings, you will
need to reboot your machine to regain connectivity.
Fifth Floor, Prospect St. Side