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--- en:public:femnet:howto:socket [2021/07/19 10:52] – Translation page created nex
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-====== socket ======
+====== Why doesn't my network socket work anymore? ======
+===== Every time I try to open a website, I am being redirected to the FeM-website =====
+Apparently you have connected a device to your network socket, which isn't registered for that socket.
+Due to some technical limitations you have to register every device you'd like to connect to your network socket.
+If you don't do so, the socket gets blocked for 30 minutes and only a few limited services are available on the socket during that time.
+For instance, you still have access to TU Ilmenau Webmail and some of our websites.
+To solve the problem, just disconnect the non-registered device from the network socket and reconnect a registered device 30 minutes later.
+If a socket gets unlocked, it's sometimes necessary to disconnect and reconnect all devices which are connected to the socket so the socket can be reconfigured properly.
+If this problem arises with a registered device, you might have to disable [[mac-randomization|MAC-Randomization]].
+===== I have two network sockets in my room but only one is working! =====
+Most houses only have one network socket or two network sockets of which only a single one is actually connected to our switch.
+If only a single socket in your room is working, this is the expected behavior.
+However, the second network socket can be activated in case the first network socket is damaged in a way that it can not be repaired.
+===== When I connect a cable to my network socket, the connection is very bad or doesn't work at all! =====
+In this case, there is probably a damaged network component.
+Possible problems can happen at:
+   - your network interface
+   - your network cable
+   - our network socket in your room
+   - our network cable in the wall
+   - our network socket in the electrical operating room
+   - our network cable to the switch
+   - our network interface in the switch
+Most of the time, the components 4 to 7 are not damaged, but rather network sockets can get damaged by frequently plugging and unplugging network cables (over multiple years!).
+However, sometimes it's also that case that some of the network cables are just damaged.
+Before negotiating an appointment for an on-premise inspection (which leads to temporary outages in your room during the inspection), you should eliminate all problem sources, which come from your end.
+Therefore, you should:
+  * Connect a different device to your network socket. Usually every LAN connector on one of your devices is a different devices (in the sense of a network interface), so e.g. using a USB-LAN-adapter instead of the builtin connector should suffice.
+  * Exchange your network cable with a different one. You can just ask one of your room mates for a cable. Chances are high that someone in your house can lend you a cable.
+If both doesn't work, chances are high that the network socket in your room is damaged.
+In this case, please open a ticket at [[https://helpdesk.fem.tu-ilmenau.de/]], stating your problem and telling us what you have already done to solve the problem.
+An admin or technician will then respond to you so we can make an appointment for an on-premise inspection.
+Please keep in mind, however, that this can take up to two hours or longer, depending on the difficulty of the problem.
+===== If I connect to my WiFi router, the connection is very slow or unstable! =====
+Generally we can not guarantee that your own WiFi router can provide a good connection.
+We don't guarantee that we solve problems with your WiFi router.
+If you have a problem with your WiFi router, try to connect your PC/laptop directly to the network socket using a LAN-cable.
+If the connection is now fast again, the problem is not related to our network, but to your WiFi router.
+You can now also try connecting the WiFi router to the network socket and your PC/laptop to the WiFi router using a LAN-cable.
+If the connection is now fast((some WiFi routers are technically limited to 100 Mbps speed)), the problem is the WiFi.
+Many cheap WiFi routers support only WiFi in the 2.4 GHz frequency range.
+This range provides the highest signal range for WiFi, but supports only a few devices at the same time and has a rather low speed.
+Usually, about three networks can be operated in the 2.4 GHz frequency range without disturbing one another.
+In some houses, however, many people have their own WiFi router in the 2.4 GHz frequency range.
+Thus, many devices need to share only a few radio channels.
+This is like a room full of people, where the people can't understand each other if everyone talks at the same time.
+Because of the many connections happening at the same time, the devices disturb each other, causing the connection to become very slow and unstable.
+To solve the problem, one can buy a WiFi router (and devices) which support(s) the 5 GHz frequency range.
+This range provides many more channels, a higher connection speed and less signal range, thus causing less disturbances in other peoples' networks and receiving less disturbances by other peoples' networks.
+This can improve the connection speed and stability for all residents.
+The second solution is connecting using a LAN cable.
+Devices with a cable-bound connection can not be disturbed by radio signals, thus getting maximum stability with maximum connection speed.
+**If this is your problem, please don't reach out to us. We can not solve this kind of problem.**
+===== My problem doesn't appear on this wiki page! =====
+In this case, please open a ticket at [[https://helpdesk.fem.tu-ilmenau.de]] and state all problems that you've noticed as well as all solutions you have tried so far.
+We will then look into the matter and how to solve the problem.