• Can someone explain this to me?
    15 replies, posted
So this has happened about twice now. A few months ago I went out to buy a new ethernet cable, because my old one would not work unless it was hooked up to an old 10mpbs hub. So When I got the cable I was able to hook it up directly to my PC with no problem, and I got internet without needing a hub. So yesterday EXACTLY at 12:00am. My internet goes offline. I did nothing to fix it, I just turned my PC off and walked away. 4:00 PM today I turn my PC on and there still isn't Internet, I try hooking the cable into my Xbox, no connection. Hooked it to my laptop, no connection, tried another cable in that port, and it worked. But it wasn't long enough to go to my PC. So I take my existing cable that I thought was the problem, hooked it back up, but this time I hooked the other end to the 10 year old hub, and hooked the small cable into to see if it would work on my PC. And all of a fucking sudden it just starts working again? What is happening?
It doesn't work anymore when the main ethernet cord is hooked up to my PC, just like the last one. And I've had experiences when my Shit goes offline EXACTLY at 12PM from time to time, it's been months since the last time it happened, but it seems to only happen to me, and my PC. All the other shit in the house is fine.
Is all your other shit hooked up to your hub?
Sounds rough man. Since you don't really know where the problem is yet, try some more troubleshooting to single out where exactly the connection is being dropped. You might possibly just have a really shitty isp. I would : Ensure your onboard/pci network card is up to date and the correct drivers are installed. Take your tower / monitor over to the shorter cord wherever that was hooked up. Plug your tower directly into the modem/router and skip the hub. Also, I would call your ISP and breifly explain the problem. See if there are any weird limitations on the line.
draw me a quick network map
[QUOTE=Shadaez;34477173]draw me a quick network map[/QUOTE] *rubbing hands together* This should be good.
[QUOTE=Kel|oggs;34472610]It doesn't work anymore when the main ethernet cord is hooked up to my PC, just like the last one. And I've had experiences when my Shit goes offline EXACTLY at 12PM from time to time, it's been months since the last time it happened, but it seems to only happen to me, and my PC. All the other shit in the house is fine.[/QUOTE] My old professor told me a story about something like this one time. Basically the network in his lab would go down at exactly 12 PM every day and come back exactly an hour later at 1 PM. It baffled him for weeks until he found the source of the problem. He had two CAT5 cables on the windowsil connected with an extender module, in which one of the CAT5 cables was ever so slightly loose. Basically the sun was heating up the connector ever so slightly enough to cause the cable to disconnect itself, and reconnect itself an hour later when it cooled down.
[QUOTE=MorningWoody;34477128]Sounds rough man. Since you don't really know where the problem is yet, try some more troubleshooting to single out where exactly the connection is being dropped. You might possibly just have a really shitty isp. I would : Ensure your onboard/pci network card is up to date and the correct drivers are installed. Take your tower / monitor over to the shorter cord wherever that was hooked up. Plug your tower directly into the modem/router and skip the hub. Also, I would call your ISP and breifly explain the problem. See if there are any weird limitations on the line.[/QUOTE] I've done that and I've done it before. My PC no longer accepts this cable when connected straight from router to PC, it needs the hub or it wont do shit all.
If you're connecting PC to PC, you'll need crossover CAT5 cable, unless your card can switch itself. Below is standard cat5 cable: [img]http://www.resnet.ucf.edu/cat5_rj45.PNG[/img] I cant find a image of crossover, but basically the pinout on the opposite connector will be the other way round. Hope that makes sense.
[QUOTE=Meekal;34491710]If you're connecting PC to PC, you'll need crossover CAT5 cable, unless your card can switch itself. Below is standard cat5 cable: [img]http://www.resnet.ucf.edu/cat5_rj45.PNG[/img] I cant find a image of crossover, but basically the pinout on the opposite connector will be the other way round. Hope that makes sense.[/QUOTE] It's not exactly the other way round. [IMG]http://www.cctvcamerapros.com/v/vspfiles/assets/images/crossover-cable-diagram.jpg[/IMG]
[QUOTE=Meekal;34491710]If you're connecting PC to PC, you'll need crossover CAT5 cable, unless your card can switch itself. Below is standard cat5 cable: [img]http://www.resnet.ucf.edu/cat5_rj45.PNG[/img] I cant find a image of crossover, but basically the pinout on the opposite connector will be the other way round. Hope that makes sense.[/QUOTE] No. I'm not connecting PC to PC... I'm connected straight to my router. And the fucking PC wont accept being hooked up straight to the router anymore, as of 12:00 AM a few days ago. Seriosly the second my PC hit 12:00am shit just never worked again. It tried hooking the same cable to the xbox 360, still didn't work. So it's the cable thats fucked. But this has happened twice now. I want to know why it keeps happening. Why my cat 6 cables just stop working on random dates at EXACTLY 12:00 AM. Sorry,just stressed about this.
[QUOTE=Meekal;34491710]If you're connecting PC to PC, you'll need crossover CAT5 cable, unless your card can switch itself.[/QUOTE] This may have been true 15 years ago, but it doesn't apply today. Nearly all modern consumer grade NICs these days are able to auto detect if they're plugged into another NIC or a switch and don't need a special cable. There are only a few niche applications that still require a crossover cable.
[QUOTE=bohb;34505442]This may have been true 15 years ago, but it doesn't apply today. Nearly all modern consumer grade NICs these days are able to auto detect if they're plugged into another NIC or a switch and don't need a special cable. There are only a few niche applications that still require a crossover cable.[/QUOTE] I couldn't connect two desktops or laptops together with anything but a crossover using integrated Intel and Realtek NICs. These are no more than 3 year old systems, and the desktops with i7 motherboards.
That's weird, because using any old CAT5 cable as a crossover has worked for me on all sorts of machines
[QUOTE=SonicXV;34507006]I couldn't connect two desktops or laptops together with anything but a crossover using integrated Intel and Realtek NICs. These are no more than 3 year old systems, and the desktops with i7 motherboards.[/QUOTE] If you connect two machines directly together, there will be no DHCP server to give IP addresses and Windows will default to the broken 169.254.x.x IP address scheme. Since there's no DHCP server to resolve conflicts, if both machines use the same IP address they won't be able to see each other. The last time I had to use a crossover cable was probably in 1997 when I had a cable modem that was dumb and refused to connect to anything other than a router without using one.
[QUOTE=bohb;34516522]If you connect two machines directly together, there will be no DHCP server to give IP addresses and Windows will default to the broken 169.254.x.x IP address scheme. Since there's no DHCP server to resolve conflicts, if both machines use the same IP address they won't be able to see each other. The last time I had to use a crossover cable was probably in 1997 when I had a cable modem that was dumb and refused to connect to anything other than a router without using one.[/QUOTE] I've had computers up into the mid-2000's not support it.
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