Campus Wireless LAN Survey June 2004 Introduction: The following survey was created by the EDUCAUSE Net@EDU Wireless Working Group as part of a project to gather information requested by the Federal Communications Commission Wireless Broadband Access Task Force GN Docket No. 04-163. Information was submitted by eleven different universities. This information can be found immediately following the text of the survey. The answers are arranged by campus population from smallest to largest and are compiled in two parts: Part 1 shows results of questions 1-4, Part 2 shows results of questions 5-8. For questions or comments please contact wwigen@educause.edu. The comments submitted to the FCC can be found at: http://www.educause.edu/ir/library/pdf/EPO0406.pdf 1. Describe your campus: 1.1. What is your campus population? 1.1.1. Total faculty and staff? 1.1.2. Total students? 1.1.3. Total students in campus housing? 1.2 Is your campus property contiguous or dispersed among several remote sites? 1.3 Anything else about your particular campus that directly impacts your wireless program? 2. Describe the decision process to install a wireless LAN: 3. Describe your campus wireless program: 3.1. Is your wireless network 802.11a, b, g, or other? 3.2. Do you have wireless coverage for: (approx. percentage) 3.2.1. 3.2.2. 3.2.3. 3.2.4. 3.2.5. 3.2.6. 3.2.7. 3.2.8. Dormitory rooms Dorm common areas Classrooms Public areas within classroom buildings Library common areas Library stacks Eating areas The entire campus 3.3 How many access points have you deployed? 3.3.1 Total on campus now? Page 1 of 16 3.3.2 3.3.3 3.3.4 Additional planned over the next year? Number serving campus housing now? Additional planned for campus housing over the next year? 3.4 How many wired users do you have on campus? 3.5 How many WLAN users do you have on campus? 3.6 What brand(s) and mode(s) of equipment do you use for your wireless network? 3.7 What tools are you using to manage and monitor this part of the network? 4 Describe how it is used: 4.1 What is your total wireless traffic for typical days? 4.1.1 Average users/average traffic (bytes/sec) 4.1.2 Peak users/peak traffic (bytes/sec) 4.2 In any given location, if there is wireless and wired connectivity available, is there a user preference for one or the other? If so, explain. Do you foresee this changing in the future? 4.3 To what extent has wireless access increased overall Internet usage on your campus? 4.4 What are the applications currently available over wireless? What do you expect in the future? 4.5 What are the typical data rates per user: 4.5.1 4.5.2 On the average? During peak usage? 4.6 What percentage of network traffic is typically symmetric? Asymmetric? 4.7 How have you designed your system to allow for peak usage periods without degrading performance? 5 Describe the major external barriers to implementation of your wireless network (regulatory, interference, geographic location etc.): 5.4 What could the federal government do to lower these barriers? Page 2 of 16 5.5 Are there things the federal government could do (such as rule changes) that would make adoption of new technologies such as mesh networks, and integrated licensed/unlicensed devices easier? 5.6 Is there enough unlicensed spectrum available for your current needs? Are you concerned about future needs? How does this affect planning? 5.7 To what extent has line-of-sight issues been a problem for your network? Would higher-speed, lower frequency (900 MHz band and below), and/or higher power transmission be desirable for better non-line-of-sight services? 5.8 What portion of your wireless network uses licensed spectrum and for what purposes? How is this expected to change in the future? 6 Describe the major internal barriers to implementation (financial, staffing, political, security, etc.) 6.4 How did you finance the cost of your wireless infrastructure? 6.5 What is your total number of WLAN support staff and total WLAN users? 6.6 Does your faculty want restrictions on wireless in classrooms? 6.7 Have security concerns been a problem? 7 Describe what you have learned since the decision was made to install a wireless network: 7.1 What is your list of best practices, including things that have worked exceptionally well? 7.2 What is your list of bad practices, including things you have learned not-to-do? 8 Does your campus participate in a community wireless project or are you anticipating one in the future? If so, 8.1 What are the major barriers, both internal and external, for that implementation? 8.2 What could the federal government do to lower these barriers? 8.3 Describe any competitive broadband wireless providers in the area. 8.4 What are the security issues? Page 3 of 16 Updated 9/15/04 EDUCAUSE WLAN Survey: Part I Questions 1-4 June 2004 Little Priest Tribal College 1. Campus Description Fac &Staff Students Total Housing Dispersed or Contiguous Other 2.Decision Process Description Bryant 75 140 215 0 Contiguous Bethune-Cookman College 400 2,743 3,143 2,600 Contiguous Georgetown 507 2,750 3,257 1,616 Contiguous Northwestern 4,835 13,614 18,449 5,071 Dispersed Buildings all connected by Old buildings fiber except for one by Tsunami radio bridge To benefit faculty, staff and New construction and as Money was available; only Fit overall plan to students. requested (with funding) incorporate new needed 7 AP for entire technologies to gain campus competitive advantage and improve the campus learning experience. Page 4 of 16 University of Chicago 7,100 17,000 24,100 5,800 14,620 13,400 28,020 2,300 Contiguous Contiguous Two campuses, both selfcontiguous Large teaching hospital with separate data network To benefit faculty, staff and Demand driven; needed students. secure system to avoid rogue access point use; phase 1 (complete): heavy usage areas; phase 2 (in progress): large research labs; phase 3 (future) office areas, new construction (wired and wireless) Updated 9/15/04 EDUCAUSE WLAN Survey: Part I Questions 1-4 June 2004 Little Priest Tribal College 3. WLAN Description 802.11a, b, g or 50/50 other Coverage:(%) Dorm rooms Dorm commons Classrooms Public areas Library common areas Library stacks Eating areas Total campus Access points: Total access points Additional planned Housing (present) Housing (planned) Users: Wired users on campus WLAN users on Only a few campus Tools: Equipment used: Cisco, Belkin, D-Link Management Tools: Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago 802.11g Began with 802.11b, adding some 802.11g 802.11b 802.11b and 802.11g 802.11b n/a n/a 100 100 100 100 100 100 100 100 0 100 25 25 100 10 25 10 20 100 5 15 15 10 80 0 95 75 75 80 100 100 100 100 100 95 100 50 40 100 100 20 80 90 15 Marginal 95 40 7 248 34 300 275 300 0 50 10 100 45 200 n/a 120 12 90 35 60 n/a 10 3 0 5 40 100 4,000 2,000 16,000 34,000 20,000 2,000 75 2,000 5,200 2,000 The diagnostic tools that come with the access points Cisco 1200's AP, Cisco WLSE, Cisco core infrastructure Cisco WLSE Avaya/Orinco APs (802.11b and 802.11b/g) Cisco 350 and 1200 Series Cisco 350 and 1200 Series Cisco 350, 1100 and 1200 APs APs APs A radius server and acces Cisco WLSE point software Page 5 of 16 Fedelia's Netvigil, YellowJacket and Air Magnet Fluke wave runner, Berkeley Varitronics Yellow Jacket, Georgia Tech. Lawn System Updated 9/15/04 EDUCAUSE WLAN Survey: Part I Questions 1-4 June 2004 Little Priest Tribal College Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Total wireless traffic Average users/average traffic (bytes/sec) Peak users/ peak traffic (bytes/sec) User preference: wired or wireless low n/a n/a 300 users n/a n/a 15/11Mbps 300 users 1100/1-3Mbps 1000/10Mbps n/a n/a 50/11Mbps 460 users 1300/3.75Mbps 1500/15Mbps Wired; very few students own wireless devices Wireless due to convenience. Forecast: wireless Wireless due to convenience. Forecast: wireless Wired due to bandwidth. Forecast: wired Wireless due to convenience. Forecast: wireless Negligible No change Negligible Minor Increase Wireless due to convenience. But wired may be required for large downloads. Negligible Change in overall Internet usage due to wireless Applications available over wireless All applications also on wired LAN E-mail, web surfing, online All IP applications E-mail, web surfing, web portal use; Forecast: same registration and some webct offerings. as wired All IP applications (no multicast applications) Web and e-mail; no restrictions on applications Forecast: same n/a n/a n/a n/a n/a n/a 3-5Mbps 1-2Mbps 80% n/a n/a n/a .1Mbps .2Mbps 66% Not an issue As budget allows Additional APs Overall design for high quality 11Mbps 5.5Mbps 95% based on network stats Additonal APs 4. WLAN Usage Description Minor Increase Data rates/user: On average Peak usage % asymetric traffic System design for peak usage Page 6 of 16 Wired available as alternative Updated 9/15/04 EDUCAUSE WLAN Survey: Part I Questions 1-4 June 2004 Georgia Tech 1. Campus Description Fac &Staff Students Total Housing Dispersed or Contiguous Other 2.Decision Process Description Virginia Tech 5,900 16600 22,500 7400 Contiguous Colorado State 6,600 28,000 34,600 8,500 Contiguous University of Maryland 7,000 24,500 31,500 5,900 Contiguous NYU 12,112 35,329 47,441 11,579 Contiguous Outdoor areas have many Some lab areas are 26,000 acre area: wide supported with laptops and trees that impact signal range of spectrum quality. access points on carts. applications, including ITFS, microwave, satellite teleport, TV/Radio stations, public safety, medical, paging, cellular/PCS, and small airport. Deployed 802.11 equipment as a trial in the IT Building; as a result, all campuses have been demanding 802.11 Began in conference rooms Planned centrally with and common areas; next to priority heavy usage areas and by special request academic and administrative buildings; not in dorm rooms due to ethernet Page 7 of 16 To benefit users by offering an alternative connection; began with heavy usage areas 11,000 50,000 61,000 10000+ Contiguous Strong fiber infrastructure; 25 distinct address spaces hamper mobility; urban site demands careful position of access points on exterior walls Interested prior to 802.11; security was and remains greatest concern; grew slowly until a scalable model was achieved; started with common areas; spread as requested by faculty; Updated 9/15/04 Georgia Tech 3. WLAN Description 802.11a, b, g or Mixture of all three. other Coverage:(%) Dorm rooms 0 20 Dorm commons 75 Classrooms 75 Public areas Library common 100 areas 100 Library stacks 80 Eating areas Total campus Access points: Total access 550 points Additional 150 planned Housing 7 (present) Housing 15 (planned) Users: Wired users on campus WLAN users on 6200 campus Tools: Equipment used: Proxim: Wave POINT-II, AP-1000, AP-2000, AP1200; Cisco AP-1200 Management Proxim AP Manager, Web Tools: interface, IOS commands; evaluating Airwave Management Platform EDUCAUSE WLAN Survey: Part I Questions 1-4 June 2004 Virginia Tech Colorado State University of Maryland NYU 802.11a,b,g: Upgraded to 802.11g summer '04 Primarily 802.11b; new 802.11b (except for a few installations are 802.11b/g "g" tests) 802.11b converting to 802.11g within a year. 0 0 90 95 100 20 100 75 50 100 2 2 15 80 80 0 5 15 5 40 100 80 50 100 100 25 20 100 Marginal coverage 0 5 850 220 404 360 100 0 0 100 0 18 15 0 0 28 0 12+ 25,000 30,000 25,000 24,000 1,450 800 3,000 6,000 increasing daily Cisco 1200s; Bluesocket Cisco 340 (7), 350 (74) and Cisco 350 and 1200 1200 (175) Aps Tivoli Net View, Nagios, Cisco WLSE, in-house scripts, MRTG, AirMagnet and a collection of locally developed management handheld tools. Page 8 of 16 Cisco (end-to-end) transitioning to 1200 Aps 2 Cisco WLSEs (on Micromuse Netcool, Wavelink Mobile Manager, order) Airmagnet, Sniffer Wireless Updated 9/15/04 EDUCAUSE WLAN Survey: Part I Questions 1-4 June 2004 Georgia Tech Virginia Tech Colorado State University of Maryland NYU 90/9 Mbps n/a 50/3.5 Mbps 5.5Mbps n/a 500/62 Mbps n/a 100/7 Mbps 12Mbps n/a Wired. Forecast: wireless No preference except in conference rooms Wireless due to convenience. Forecast: power is more the problem 4. WLAN Usage Description Total wireless traffic Average users/average traffic (bytes/sec) Peak users/ peak traffic (bytes/sec) User preference: wired or wireless Change in overall Internet usage due to wireless Applications available over wireless Wirless is preferred, unless Laptop and PDA users high bandwidth required prefer wireless: desktops prefer wired. Forecast: more wireless Minor Increase Negligible <10% Negligible All IP applications; E-mail and web. Forecast: All current network Web Services, email, Currently, best effort resources; Forecast: voice NYUnet; (P2P is blocked) interactive shell, news, etc. Internet/Intranet. Forecast: Wireless integration with Univ. portal voice and multimedia. Data rates/user: On average Peak usage % asymetric traffic System design for peak usage n/a n/a 55% 1.5 Mbps .5 Mbps 80% Additional AP's Upgrading from 802.11 b to Designed for coverage not Designed for coverage not More access points running on a very low g usage; no problems so far usage except in large power; no problems so far. lecture halls 2-3 Mbps <1Mbps 90% Page 9 of 16 n/a n/a 90% n/a n/a n/a EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 5. Describe the major external barriers to implementation of your wireless network: Little Priest Tribal College Bryant Bethune-Cookman College University of Chicago Virginia Tech Colorado State The lack of need for it by our students who have no wireless devices. Building design and signal penetration. Cost Channel separation/density is the largest drawback; also trying to implement two separate networks superimposed on each other is nightmare. Cost recovery Unable to integrate campus voice and data services with local cellular/mobile providers 5.1 What could the federal government do to lower these barriers? Northwestern University of Chicago Virginia Tech Having only 3 non-overlapping channels available makes deployments difficult; a larger channel range would help. Somehow limit/control products in this portion of spectrum Continue to promote unlicensed spectrum and affordable products 5.2 Are there things the federal government could do (such as rule changes) that would make adoption of new technologies such as mesh networks, and integrated licensed/unlicensed devices easier? Little Priest Tribal College Virginia Tech Unlicensed devices might help to do a remote site about 15 miles from main campus. Lower frequency, higher speed, bands (900 MHz band and below) are needed for outside NLOS WMAN applications 5.3 Is there enough unlicensed spectrum available for your current needs? Are you concerned about future needs? How does this affect planning? Little Priest Tribal College Bethune-Cookman College Georgetown University of Chicago Not a problem. Not a problem. Currently enough unlicensed spectrum for our needs; the proliferation of additional wireless products could start to make this a problem; we would have to make sure all of these new products are coordinated in a planned deployment so as not to interfere with the current/future infrastructure. Probably yes, but since we are limited to marketed products, this is an ongoing concern. Page 10 of 16 EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 Virginia Tech Colorado State U of Maryland Georgia Tech Currently enough spectrum; may not be enough for video; no affordable products like Wi-Fi for 900 MHz; no WiMAX for 900 MHz and lower bands Yes, primarily because we have a large, contiguous campus. No; but we just utilize what’s available (and assume more will continue to become available.); our planning is not affected. Currently, there is; as more 2.4 GHz devices are produced, thus may change. 5.4 To what extent had line-of-sight issues been a problem for your network? Would higher speed, lower frequency (900 MHz band and below), and/or higher power transmission be desirable for better non-line-of-sight-services? Little Priest Tribal College Bethune-Cookman College Georgetown University of Chicago Virginia Tech Colorado State U of Maryland NYU Georgia Tech Not a problem Maybe Not a problem Not a problem to date; probably Big problem for outside and community wireless networks Deployed wireless mostly inside buildings, with very few point-to-point links; if we deploy a mobile wireless solution (to benefit the University police) the 900 MHz solution would help resolve problems with trees, etc. Not a major problem 6-7 point-to-point currently running; tons of fiber so lots of option; only one building that couldn’t be reached. Not a problem 5.5 What portion of your wireless network uses licensed spectrum and for what purposes? How is this expected to change in the future? University of Chicago Virginia Tech Colorado State Georgia Tech None, now; integration with cellular, etc., will change this Mostly unlicensed and that will continue to increase on campus and possibly to hot spots and hot zones around town; a regional metro wireless network is being planned that may make use of licenses and/or unlicensed band services. No licensed spectrum is used for data only purposes at this time; the University funds approximately 1,400 cellular devices (faculty/staff); approximately 90% of students have cellular phones. None Page 11 of 16 EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 6. Describe the major internal barriers to implementation: Little Priest Tribal College Georgia Tech Financial Financial and staffing; we’re putting up access points as fast as we can but we’re still not keeping up with the demand. 6.1 How do you finance the cost of your wireless infrastructure? Little Priest Tribal College Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Virginia Tech Colorado State U of Maryland NYU Georgia Tech EPSCOR helped with some of the access points. Won capital approval as special project. A combination of grants and internal funding. Originally a funded project to cover high profile areas; funded now by departments by request; included in the cost for new or refurbished buildings. 35 of the APs were funded centrally; 240 funded by departments, installed and maintained by IT It was a budgeted technology enhancement. Subscription fee and bundled Most with central capital IT funding; some college IT funds have been contributed. Base seed cost; all expansions paid for by departments. Funded by central IT organization. IT department purchases access point out of budget or special funding; departments fund the installation of wired ports to support the APs. 6.2 What is your total number of WLAN support staff and total WLAN users? Little Priest Tribal College Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Virginia Tech Colorado State U of Maryland One staff / only a few users one FTE / 2,000 users Four support staff / 75 users The wireless is supported by the current engineering staff/ 2,000 users Multiple layers of support; basic support and network support; none dedicated / 5,200 users 8 support staff who perform all network installation and repair including wired and backbone / 2,000 users 5 staff / 6,000 users; integrated with wired LAN staff so hard to tell. 5 FTE / 1,450 users; None of the staff are dedicated to wireless only. 3 support / 800 users Page 12 of 16 EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 NYU Georgia Tech <10 staff / 3,000 users 4+ support/ 6,200 users 6.3 Does your faculty want restrictions on wireless in classrooms? Little Priest Tribal College One faculty member uses wireless, not an issue. Yes Not yet. Some requests that we don’t deploy wireless near their classrooms so that students aren’t distracted by surfing the internet. Had it mentioned but never requested; in a building that is fully covered it is hard to block access to a classroom and not a study area that may be right next door. Yes, some want the ability to turn it off at certain times. Some do. Not at this time. Under discussion in various forms on campus; no resolution as yet Not at this time. Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Virginia Tech Colorado State NYU Georgia Tech 6.4 Have security concerns been a problem? Little Priest Tribal College Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Virginia Tech Colorado State U of Maryland NYU Georgia Tech Not yet. Have not been a problem but the issues were dominate throughout the planning and design phase. No Yes, we currently run an open network and are seriously considering a change. No at this time; we have users tunneled through a VPN server. Yes, moderately; of great concern is “compromised computers”. Yes, authentication and encryption are issues No Yes, authentication is used and VPN is recommended. THE BIG CONCERN; currently support 3 types of clients, hopefully will be supplanted by 802.11i standard. Wireless network is treated as “off-campus” – only secure protocols allowed; greater problem is virus- infected laptops connecting to network Page 13 of 16 EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 7. Describe what you have learned since the decision was made to install a wireless network: Little Priest Tribal College It is not that hard to do; it is very convenient; we will always make wireless available in new buildings 7.1 What is your list of best practices, including things that have worked exceptionally well? Little Priest Tribal College Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Virginia Tech Colorado State U of Maryland NYU Our wireless access is so simple and so complete, it is a best practice; the less expensive access points work just as well as the more expensive Cisco access points. Include the student community in the overall process; give them a voice; process seems to speed up when students are the advocates. Installation isn’t that hard; keep it simple; a high level of security isn’t always needed at some locations. Good site surveys; provide exceptional coverage in all areas that are to be covered; advise users that wireless is an adjunct to the wired network. Statically set the channel on the AP rather than letting the APs auto scan; a site survey for all installs. Every installation is different, so you must do a survey; provide coverage where needed so that rogues are less likely; remove rogues; require authentication to use the wireless network; maintain the ability to identify both compromised machines and users violating policy; quarantine infected machines. Site surveys; assess asbestos and lead paint issues in advance Use VPN to insure authentication and privacy (via encryption). Use Siteplanner for design. Realize that education environment is extremely tough compared to corporate; compromises are constant; always think backwards and think legacy equipment; have a uniform methodology to connect to the network, including guests; don’t skimp on number of APs; low power/high density works well; set the user expectation bar---cell phone comparison works well. Page 14 of 16 EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 7.2 What is your list of bad practices, including things that you have learned not-to-do? Bethune-Cookman College Georgetown University of Chicago Virginia Tech Colorado State NYU It’s not always necessary to outsource installation; don’t buy a 2nd access point when another card and an external antenna might do the trick. Originally recommended certain wireless NICs; we no longer do that. Make few or no assumptions about topology requirements; do a survey! Sloppy work. Have had occasional problems with users bridging wired and wireless LANs; still looking for a good solution to prevent this. (Cisco APs do run IOS but *do not* allow routing between the wireless and wired sides.) Don’t depend solely on proprietary solutions. 8. Does your campus participate in a community wireless project or are you anticipating one in the future? Little Priest Tribal College Bryant Bethune-Cookman College Georgetown Northwestern University of Chicago Virginia Tech Colorado State U of Maryland NYU Georgia Tech I hope to make the college the leader in an effort to connect to the entire community into a wireless network. Not at this time. None anticipated No No No Yes, do participate and anticipate more in the future Exploring the possibility No No and not in near future, enough existing hotspots available in neighboring areas Partner with wireless ISP to provide wireless service in ‘public’ areas of the campus such as retail, library and continuing ed buildings. 8.1 What are the major barriers, both internal and external, for that implementation? Little Priest Tribal College Virginia Tech Colorado State The major barriers are political; we hope the college can become the leader with the ability to bring the community together enough to set aside political issues and do what is right for the community. Cost and right of way. Access to towers, municipal fiber, separating entities’ wireless traffic into routable VLANs Page 15 of 16 EDUCAUSE WLAN Survey: Part II Questions 5-8 June 2004 Georgia Tech How to provide public ISP service in some of the same locations as we provide Georgia Tech wireless network without interfering; use multiple SSIDs on AP; separate VLAN for public ISP traffic; hand-off to ISP who handles billing etc. 8.2 What could the federal government do to lower these barriers? Little Priest Tribal College Virginia Tech Help us increase our bandwidth; we can use that as a vehicle to support non-profit community projects. Promote development of lower cost WMAN/WiMAX technologies for unlicensed bands. 8.3 What are the security issues? Little Priest Tribal College Virginia Tech Colorado State Georgia Tech Security will need to be tight once we set up a community-wide wireless network; we will need to lead and be the key player. Authentication, encryption, VLANs, performance impact, cost Eavesdropping, masquerading, denial of service, rogue APs, airborne viruses Insulated from their security issues because their traffic does not touch anything on our network. Page 16 of 16