Wireless Networking

Revision as of 19:23, 11 May 2016 by Steve410.cs.jhu.edu (talk | contribs)

JHU-provided Wifi

CS does not provide wireless capability. We suggest connecting to JHU's hopkins wireless network if you would like to wirelessly connect to JHU. (We recommend you do not connect to JHU's "JHGuestnet" access point, since it limits your ability to connect to sites within JHU. So, use "hopkins" instead.)

If you have problems connecting to JHU's "hopkins" wireless system, you can either contact the JHU Helpdesk at 410-516-HELP or, you can send e-mail to wirelessteam@jhu.edu for further assistance. Be sure to tell them where on campus you are experiencing the problem. They might also require specific information about your computer, including its wireless interface's MAC address.

When You Absolutely Have To Run Your Own Wifi In Malone Hall

The following paraphrased info was provided by Calvin Sproul, Network Manager, Wireless Technologies for Johns Hopkins Enterprise:

First, what JHU Provides

Johns Hopkins has set up for staff faculty and student use the enterprise wireless network for use in the Homewood campus buildings. You should be able to accomplish normal functions such as printing, backups, sharing data, file shares, email, instant messaging, etc... from your wirelessly capable device.

JHU has built out office and classroom areas for the proper coverage and capacity within the buildings on campus. This includes Malone Hall.

If you have issues connecting to the Johns Hopkins Wireless network, you can contact the JHU Help Desk to open a problem ticket. Also, you can contact the WirelessTeam@jhu.edu and they can determine whether you have a radio infrastructure issue or device configuration issue.

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The enterprise network meets common needs, but sometimes for the sake of innovation department routers may be justified for projects. If doing this, please turn off the 5Ghz radio on your router and use only the 2.4Ghz. Turn down the power to the radio to 5 mw. Use only non-interfering channels 1,6,11 in the unlicensed ISM 2.4GHz bandwidth. Be aware that you are in a "shared environment" and please coexist with your neighbors. Do NOT use channels 2,3,4,5,7,8,9,or 10 in the 2.4 GHz frequency band. These channels overlap with the neighboring channels and cause enough co-channel interference to render neighboring channels unusable. Turning up the power to the radio get a reliable signal will only cause problems for others. Make sure you disable DNS and DHCP services and other enterprise services at the router.

You have the right to broadcast your radio in unlicensed frequency, but Johns Hopkins Enterprise IT has the right to defend the network and the networks names or SSID we advertise such as "hopkins" or "JHGuestnet" and the router may be turned off at the switch port if identified as causing issues.