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This category is for issues related to connectivity, the ability of a computer to use the network.
Carleton networking follows the client/server model. The Carleton network is divided into several smaller networks, or subnets:
- The Student Computing Network, sometimes referred to as ResNet.
- The Academic Network, or Acad.
- The Administrative Network, or Admin.
Technically, these subnets may be subdivided further, but this is usually irrelevant to usage.
For connectivity purposes, the ResNet is usually the relevant network, as it's used for internet access in all of the dorms and interest houses. The ResNet is also the network used by wireless points and Nomad Ports (see below). It is against campus policy to connect a personal computer to any college network other than the ResNet. This measure is intended primarily to prevent the spread of viruses.
In order to connect to the Student Computing Network, a computer must be registered. Instructions can be found at the Student Computing Network registration topic. If you need an Ethernet cable, go to the SCIC.
Several locations on campus have wireless access:
More details can be found in the individual location topics. There is also a map available.
In addition, some of the off-campus houses have wireless access because they lack Ethernet wiring. Such houses have wireless boxes in the rooms.
Many Carleton students also enjoy free wireless access at Blue Mondays, a popular coffee shop on Division St. Blue Mondays is usually open from 7:00am to 11:30pm. The Contented Cow, a nearby pub, also offers wireless.
The Nomad Ports were a program initiated in the dark days before wireless to give laptop users the ability to connect to the campus network outside of the dorms. They continue to be in service, often providing a more reliable connection than wireless access points. They can be found in the following locations
First identify whether or not it is a port problem. Do you still have the Netware Client installed? If so, remove it (see: UninstallNetware).
Is E-Mail working, but not web-browsing? Try a different web browser if you can. If your proxies are turned on, try turning them off. Go here to see how to fix your proxy settings.
Is web-browsing working, but not email? Make sure the smtp and imap settings are properly configured in preferences.
If neither web-browsing or email are working, retrieve the IP Address. On PCs, you can do this by going to Start-->Run, and then typing cmd, then typing IPCONFIG. On Macs, go to the Networks control panel under system preferences. Does your IP begin 137, 169, 192, or 10.22?
137 means you are connected to the network. If you cannot connect to either e-mail or the web and your'e on a PC, check your settings in Internet Options and in the Network Connections control panel. Turn off proxies, turn off firewalls. In Windows Service Pack Two firewalls are a common problem. In the Network Connections control panel, in the TCP/IP properties of Local Area Connections properties, make sure your computer is set to have an IP Address configured automatically via DHCP.
10.22 means your computer can see the internet and but you are not yet registered. Go to https://registrar.res.carleton.edu. This page may take up to a full minute to load. If it loads, follow the instructions on the page. If it fails to load, check the settings in Network Connections and Internet Options. Turn off proxies in Internet Options and firewalls in Network Connections Properties. In Windows Service Pack Two firewalls are a common problem.
192 means you are either not seeing the DHCP server or you have been booted off the network for a DMCA violation, high bandwith use, or a virus. First check in the Network Connections control panel, in the TCP/IP properties of Local Area Connections properties, make sure your computer is set to have an IP Address configured automatically via DHCP (in Macs go to the Networks Panel in System Preferences). If you are set to obtain an IP Address automatically, you should contact Kevin at x4336 or email him from the labs at scic@carleton.edu.
0.0.0.0, Media Disconnected, or blank means you cannot connect to the network. A restart very often solves this problem. If it does not, make sure the media is not disconnected: make sure the cable is firmly connected into both the active, stickered port and into the computer.
Are you getting link lights? Link lights, the small lights on your ethernet card, when lit, mean that there is a link between your computer and the network. Some cards combine the link light and the traffic light: if everything is working, the light will be solidly lit most of the time, but will blink when it sees traffic on the network. If there are no link lights, there may be a problem with the Ethernet card. Check the network adapters in the Device Manager in the Hardware tab of the computer's properties, look for yellow exclamation points or question marks that point to hardware problems. Do new drivers need to be installed? Is the hardware lodged firmly into the computer? Malware is also known to hamper internet connectivity: be sure no viruses or spyware are ruining computer settings. Is it a port problem?
169 means you cannot connect to the network. A simple restart sometimes solves this problem. Are you getting link lights? Link lights, the small lights on your ethernet card, when lit, mean that there is a link between your computer and the network. Some cards combine the link light and the traffic light: if everything is working, the light will be solidly lit most of the time, but will blink when it sees traffic on the network. If there are no link lights, there may be a problem with the Ethernet card. Is it a port problem? If it is not, check the network adapters in the Device Manager in the Hardware tab of the computer's properties. Malware is also known to hamper internet connectivity: be sure no viruses or spyware are ruining computer settings.
Reset the TCP/IP Stack - For 169. or 0. or even 192., you can try resetting the TCP/IP stack:
- Do so by opening a command prompt (Start->Run->"cmd")
- Type the following command (sans quotes): "netsh int ip reset resetlog.txt" .
- If that command doesn't work, another command that is supposed to work under XP SP2 (but is currently untested by the SCIC) is: "netsh reset winsock catalog" .
If all fails, talk to a SCIC worker, they will HEAT the problem to Kevin or Dlugosz as appropriate.
Do you run a software firewall? Many software firewalls will slow down Net Registration A LOT. Either wait, or turn your firewall off temporarily and try again.
How do I connect to the Carleton network from off-campus? How do I configure / use PPP dial-up?
Carleton has a dial-up number, which is 646-5528. Make sure you have a modem. You must use NetStorage to access network drives from off-campus.
The friend account, which has replaced the guest account, allows people who are not current students to access the lab computers.
Only SCIC workers and ITS staff have access to the friend password. They can get this password from the SCIC conference on caucus. SCIC workers will only give this out to parents, prospies, alums and other people who have a legitimate reason to use the labs machines.
Carleton alums should have their own account. If you are an alum and do not have all your account information you may use the friend account, however you should contact the Alumni Affairs Office at alumni-office@acs.carleton.edu or 1-800-729-2586 and ask for their Alumni Directory login information.
Can I connect to the network without an Ethernet card?
No. In order to communicate with the network, your computer will need an Ethernet card, a type of Network Interface Card (NIC), installed. A modem will not work. 3Com is the recommended NIC.
SCIC workers, What website will allow you to see the status of important campus servers?
http://scicmonitor.its.carleton.edu
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