Frequently Asked Questions
You've got questions? We've got answers. If you don't find what you need here, please contact us at (858) 534-3227 or resnet@ucsd.edu.
I. General ResNet Information
[Back to Top]Q: What is ResNet?
A: ResNet (short for Residential Networking) is the physical network that provides each on-campus residential student a network port in their room and a connection to residential wireless access points. ResNet is also a group within ACS that provides support for students with network and/or computer questions or problems. Using presentations, our website, information tables, and written material, the ResNet staff works with the residence staff at each college to keep students informed about network related issues, and help them become more computer savvy.
Q: What does ResNet provide?
A: ResNet provides access to UCSD's electronic resources and educational/research related material on the Internet. ResNet, along with Housing and Dining Services and ACT/Triton Cable Services, provides you with a network connection via cable modem or straight Ethernet. Your connection is always on, and you do not need to dial a connection. The data connection in your room gives you direct access to the Internet from your personal computer. Youu can use it for web browsing, email, Instant Messaging (AIM and ICQ), Telnet, and FTP (for file transfer among computers on the Internet).
Q: What does ResNet cost?
A: All costs associated with services provided by ResNet are included in your housing fees. There are no additional fees or charges.
Q: Who can connect?
A: All on-campus residents, including Warren Grad housing and Coast Apartments, are wired for data connections. Some residential halls have ResNet wireless access points as well.
Q: How do I get connected?
A: Since most computers are set up with the default configuration settings to work right away, most students simply need to plug their network cable in and register their connection. If you run into problems, check out our FAQ and troubleshooting sections. This documentation also has information about how to check e-mail and information on commonly used e-mail applications. Make sure you are familiar with the Acceptable Use Policies listed at the beginning of the documentation.
Q: Is it possible to plug in more than one computer into the network?
A: You may have more than one device on the network (more than one IP) associated with your name, as long as you do not violate the Acceptable Use Policy. ResNet reserves the right to limit the number of IPs registered to you. Register every computer you use on the network. Please contact our office at (858) 534-3227 if you have any questions or have a unique circumstance.
Q: What are cable modems, and can I plug my Ethernet-ready computer into them?
A: Some residence halls and apartments have black Cisco boxes mounted on the walls. A cable modem network uses existing coaxial cabling (like your cable TV) to deliver high-speed data access to your room. Ethernet (data) transmissions are converted into analog signals and are passed onto a cable channel at a central location. The signals are transmitted to your building alongside the cable TV signals. The cable modem box translates these signals back into Ethernet transmissions in your room. From this point, you are able to plug your Ethernet-ready computer into the cable modem.
Q: What else should I know about my cable modem?
A: The cable modem in your room (or neighbor's room) is an essential part of the connection. If it gets unplugged or damaged it will cease to operate properly. Power-cycling the modem by unplugging it from the electrical outlet for 2 minutes and plugging it back in may re-enable the connection. If it doesn't, call the ResNet office to report the problem.
Groups of cable modems are connected to one data channel and "share" the bandwidth of this channel. You can picture this as a highway that you share with the people in your local area. If everyone were trying to use the highway at the same time, there would be congestion and no one would get anywhere quickly. The same principle applies to your network connection. The more people using the connections in your area or building, the slower the network will be in your area. This can be a serious problem if individuals in your area are performing network-intensive activity. This is the electronic version of a "road hog". Please remember to be considerate to those in your area with your network usage.
Q: Can I host a personal website?
A: Yes. Please go to http://acs.ucsd.edu/info/personalwebpage.php for more information.
Q: Could I set up a server in my room?
A: Yes, as long as it does not violate any part of the Acceptable Use Policy. Realize that any server accessed by even a few people will probably violate our network usage policy. Popular examples of these servers are FTP, Hotline and game servers.
Servers also create security risk. When you allow others access to your computer, you open a door for someone to get into your computer to do malicious or illegal activities. Remember that you are responsible for your computer. If your computer is used to break the Acceptable Use Policy, you will be held responsible. If you have questions about servers, ask us for help.
Q: Should I get a Macintosh or a PC?
A: Both types of computers are supported by ResNet. If you have used one type of computer before and you are satisfied with it, we recommend that you go with the same type again.
Q: Should I bring a printer to school?
A: It is convenient, but not essential. You can set up laser printer accounts through ACS/Instructional Computing. For more information, call ACS/Instructional Computing at (858) 534-4060.
Q: Are the desks in the residence halls and apartments large enough for a big monitor?
A: The desks are big enough for most monitors, but keep in mind that this takes away desk space. We recommend monitors 19" or smaller.
Q: Should I worry about theft?
A: Laptops are stolen occasionally, but it's usually because the owner left their door wide open or left it at the library while getting a bite to eat. If you are careful, you probably won't have problems.
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II. Ethernet Cards
Q: Do I need an Ethernet card?
A: An Ethernet card is necessary to connect to the wired network. To use the ResNet wired connection, all computers are required to have an Ethernet card. Reliable Linksys Ethernet cards are sold at the UCSD Bookstore. Make sure that your Ethernet card is 10Mbit or 10/100Mbit and has a RJ-45 jack.
Unsupported cards may not be compatible with your computer. If you have questions, please call the card or computer manufacturer to ask about incompatibility problems.
Q: Can I use my phone cable for my Ethernet card?
A: No. Doing so may damage the connectors within the cards and/or your phone cable. You must buy a separate Ethernet cable, otherwise known as Cat-5 cable. Macs typically come with telephone cables but no Ethernet cables.
Q: How are phone cables and Ethernet cables different?
A: An Ethernet cable connector has 8 pins; a phone cable has 4. Ethernet cables are also wider.
Q: Will a 10/100Mbit network card work?
A: Yes. A "network card" is the same thing as an Ethernet card. 10/100Mbit means the card can function both as a 10Mbit card and a 100Mbit card. ResNet requires only a 10Mbit card.
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III. The UCSD Network
Q: Do I really need to register?
A: Yes. If you don't, you will not be able to connect to any website but the registration page. Register here. If you are using the public "UCSD" (non residential) wireless network, see the directions here
Q: Does ResNet block P2P programs like Kazaa and Morpheus?
A: We do not block any Internet services at this time. Traffic may be prioritized, so during peak times, file sharing applications may seem blocked because they are moving so slowly. We do this to ensure each user has access to basic services, such as web browsing and checking email. If you have problem connecting to any site or using any type of service, please contact us!
Q: Are the IPs static or dynamic?
A: The IPs are static and assigned by a DHCP server. Our DHCP server keeps track of the unique hardware addresses on your Ethernet cards and will assign you the same IP every time you turn on your computer.
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IV. The ResNet Program
Q: What is an RCC?
A: RCCs are Residential Computing Consultants. RCCs are students who are here to help you with your computer and network concerns.
Q: How much does all this cost?
A: ResNet is free to those living on-campus. All costs associated with services provided by ResNet are included in your housing fees.
Q: Are the RCCs certified or do they have any contracts with the manufacturers to do warranty certified work?
A: RCCs do not have contracts with the manufacturers to do warranty certified work, but most computer manufacturers will allow the case to be opened (and the seal broken) for the installation of an Ethernet card without voiding the warranty. If you are unsure about this, please contact your computer manufacturer for more information.
Q: How can I sign up for an appointment?
A: If you are experiencing a network or computer related problem, call (858) 534-3227. We will first try to troubleshoot your problem over the phone. If we determine that you need an appointment, we will schedule you for the next available slot. Due to the high volume of calls during the first few weeks of each quarter, there may be up to a 5 day wait on appointments.
Q: Do RCCs get paid or is it volunteer work? How do I become an RCC?
A: RCCs are employees of UC San Diego and are paid hourly. Click here for more information. The application period for Fall is generally during the last 5 weeks of Winter Quarter. All RCCs MUST be able to work forty hours during Welcome Week.
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V. Your Student Email and UNIX Accounts
Q: Can I check my mail without programs like Eudora or Microsoft Outlook?
A: Yes, there are other ways you can check your UCSD email without these programs. Please check our "Setting Up Email" section.
Q: What is my outgoing (SMTP) mail server?
A: smtp.ucsd.edu
Q: What is my incoming (POP3) mail server?
A: You received a registration form with your server name at registration. See http://acs.ucsd.edu for more information.
Q: What's a UNIX account and why do I need one?
A: Your UNIX account is your primary UCSD network account. It handles your email and provides other services such as file storage, website hosting, and almost anything Internet related. Your UNIX account enables you to register for a ResNet connection, access course website and computing resources, access your UCSD email, access the UCSD wireless network, and authenticate when using services that require a fee (such as laser printing).
Q: How do I obtain a UNIX account?
A: All enrolled students already have UNIX accounts. Go to http://acs.ucsd.edu for more information.
Q: How do I access my UNIX account?
A: At orientation, you received a registration form that had your server name, username, and password for your account. Connect to it using FTP or SSH
Q: How do I upload or download files into my UNIX account?
A: You must FTP in. Microsoft Windows comes with an FTP client, and Mac OS X can FTP from the Terminal application. For Macintosh OS 9 or earlier, download an FTP client (called "fetch") off the Internet. Please go to http://resnet.ucsd.edu/ftp.shtml for full details.
Q: I lost the piece of paper with my username and password. Where do I go to get a new password?
A: Look up your account information and create a new password using the ACS Account Lookup Tool. You must know your username and PAC code (the one you use for registering classes). If you still need help, bring your campus ID to ACS/Instructional Computing located at Applied Physics and Mathematics Building (AP&M) 1313 from Monday — Friday, 8am — 4:30pm.
Q: I think the mail server is down. Who do I call?
A: Please call ACS/Instructional Computing at (858) 534-4060.
VI. Wireless Networking
Q: What is wireless networking, and where on campus can I use it?
A: The wireless network is a high-speed Internet connection without physically plugging your computer into anything. Wireless campus coverage increases every year. Check the campus coverage map to see where wireless Internet is available.
Q: How can I use it?
A: Follow the directions in the Getting Connected section. You must have a wireless LAN card.
Q: How fast the wireless connection?
A: For normal web browsing, checking e-mail, and Instant Messaging, wireless connection is comparable to wired connection speed. UCSD's wireless network shares a 11Mbps connection so each access point can handle approximately 30 computers without noticeable degradation. The speed of your connection may drop as more users in your area connect.
Q: What if I get bad signal strength?
A: Make sure you are in a wireless supported location.
If you are in a building with wireless support but your computer shows weak signal strength, report the location to the ACT Help desk.
Q: What does a wireless connection cost?
A: You do not need to pay to connect to the wireless network, but your computer must have a wireless Ethernet card installed or built in.
Q: Can I download large files?
A: Since wireless is shared, downloading large files slows down other connections. In addition, interference often causes you to lose your connection during the download.
Q: Do you recommend a particular wireless Ethernet card?
A: We support the Apple Airport Card for the Macintosh, and recommend Linksys cards for Windows. You can also use the Orinoco (Lucent) 11Mbps PC card (Silver Turbo), 3Com, and Farallon PC cards.
Cards must be IEEE 802.11b "Wi-Fi" Direct Sequence Spread Spectrum (DSSS) compliant. In theory, all cards that support these standards should work. However, wireless networking is a new technology, and you may come across cards that will not work successfully within our network, even when there are no obvious incompatibilities.
Note: Resnet and the ACS HelpDesk cannot support or answer questions about any cards except the Orinoco Silver, 3Com, Farallon, LINKSYS, D-Link or the Apple Airport cards.
Q: Can I set up my own wireless router in the residence halls?
A: Yes, if you first bring the wireless router to our office so we can configure it for you.
Q: Can I buy and install my own wireless access point?
A: You will be responsible for all traffic going through your device. You must contact ResNet first. Setting up a wireless access point on your own is a violation of the ResNet Acceptable Use Policy.
Q: I'm not even getting 11Mbps. Is my card defective?
A: 11Mbps is a theoretical maximum speed. You're unlikely to achieve those speeds in the real world. With an 11Mbps card, you will probably see a maximum speed of 5Mbps.
Q: Why is my wireless connection disrupted more often than my wired connection?
A: Many factors — including large metal objects, trees, cordless phones or microwave ovens operating in the same 2.4 GHz frequency range, and multiple users connected to the same access point and sharing 11Mbps of bandwidth — can disrupt wireless connections.
The wireless network is not intended as a replacement for the wired network. If you use a machine in a fixed location, we recommend that you use a traditional wired Ethernet connection.
Q: Where can I get more wireless networking information?
A: You can get more info on the UCSD Wireless Network website.
VII. Maintenance for Mac Computers
Q: How can I make my Mac work the way it should?
A: For Mac OS X, run the Disk Utility (in the Utilities folder). For OS 9 and earlier, Run Disk First Aid. On computers running earlier versions than OS 8, you need to boot with the OS CD (information on how to do this below), then run Disk First Aid to "Verify" and "Repair" the hard disk.
Q: How do I check what OS version I am running?
A: Click on the apple in the top left corner and select About This Computer.
Q: How do I boot from a Macintosh OS CD?
A: Insert the OS CD in your computer and hold the "c" key on your keyboard while the computer starts up.
Q: I want a fresh install of the OS. What can I do?
A: Boot with Macintosh OS CD, run Disk First Aid, and repair all the problems it finds. Then look for the utilities on the CD that will walk you through installing a fresh copy of the OS to your computer. Make sure you use the OS CD that came with your computer. Certain Apple computers will only work with certain versions of the OS.
VIII. Maintenance for Windows Computers
Q: How can I make my computer boot up faster?
A: Having fewer programs start up when the computer first boots will increase speed.
- Click on Start, then Run, type in "msconfig" (without the quotes) and then click on the Startup tab.
- Check the list for the programs and files that automatically start when the computer starts up.
- Unchecking programs you don't need immediately. A few files need to be started with Windows, so only uncheck programs that you're familiar with.
Q: After my computer goes into sleep mode or when the screen saver comes up, I can't get back to my desktop, even when I move my mouse. How do I fix this?
A: Sometimes Windows doesn't respond well when an energy saver option is being used. To turn this option off:
- Right-click on your desktop and select Properties.
- Click on the Screen Saver tab.
- Click on Settings or Power and choose Never for all the options.
Q: My hard drive is full. What can I get rid of to free up more space?
A: Uninstalling some programs from your hard drive will give you more space. Keep in mind that once a program is removed, it can never be used again unless you reinstall it again from a CD-ROM.
