Wired Network Connection Keeps Failing
Nov 6, 2012
To start off with, I own the network, and every system connected to it. I run and admin it, so the chances that anyone else has changed anything is essentially zero.This computer has a wired network connection (The issue) and a wireless one. They are connected to two separate networks. A few days ago the wired card stopped getting an IP address from my router, always ended up with a 169 address. Eventually I just disabled it, and installed a PCI network card.
Now what happens is that all works fine for a while, then stops. Suddenly I am "Not connected to network" despite the fact my ip address hasn't changed. I run the network troubleshooter, it tells me the "Gateway is unreachable" Resets the network card, and all is good. Then after a while the network fails again. I did already scan with malwarebytes, and everything is fine as fat as its concerned.
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Jan 12, 2013
my general internet connectivity with my e4200.I have a new but similar problem today with the same router.After powering down equipment and moving it around, my wired connections all error. Error in that they will not get an IP address nor will they connect to the internet or each other.My wireless connections still work flawlessly.
I tried powering down the devices over night (to avoid any heating issues) and then powering up but the results are the same. I am obviously missing something, and don't really want to start my network from scratch again...
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Mar 6, 2012
I have fitted a thomson router to my desktop coputer using an ethernet cable and all is working fine. My Sony Vaio laptop recognises the wireless connection but fails to connect at the acquiring network address. I have been into the properties section of the network connection page and am only allowed 8 characters for the network key. But the Network key on the bottom of the modem is longer than 8 digits.
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Dec 4, 2012
I set up a connection from a laptop (Windows 7) that goes through a LAN proxy server to a secure ftp server (Windows Server 2003).The sftp server is assigned a public ip address.I opened the firewall at the destination and allowed port 22 traffic to the sftp server. Well, the connection is failing.I know for a fact the connection from the client laptop is making it to the sftp server.If I issue this command on the client laptop:
telnet sftpserver 22
The DOS screen clears and tells me the type of SSH server I'm connecting to. While this connection is still active, I logged into the destination sftp server and did a netstat command. I can see the address of the proxy server in the "Foreign Address" column of the netstat results. I also can see the proxy server address when I look at the Application Log on the sftp server, so I know the connection is making it to the sftp server.
I beleive the problem is the control port (return traffic) from the server back to the client. Something is being blocked or is misconfigured. I always thought the router negotiated the control port, and that the control port didn't need to be put into any firewalls.
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Nov 30, 2011
I am getting ready to move into new digs and wanting to set up my network. Main house cable internet will come in with modum to a dlink router for both wired and wireless. desktop and a magic jack wired into router wireless for ipad and laptop. then run wire to workshop about 100' from house where a second magic jack and desktop will be set up (small biz out of workshop). I am pretty sure that the range of the router for wireless will reach to workshop fine for ipad but if not I will need to put a wireless up there tooext kids have a laptop running windows 7 but kids being kids and having had problems with self control on net in past I want to be able to make sure that I can turn them off from net when needed because
1. I do not want them running me past the data limits imposed by cable company and
2. keep them from sites such as those which got them in trouble in the past (kids are older and bought laptop for selves and pop will not go along with me confiscating it if they abuse internet privileges
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May 11, 2011
I have a laptop running win xp. It was running fine this morning. I then brought it to a Honda dealer. The problem started there ...At first, I got a strong wi-fi signal but not network connection. I tried to repair (by right clicking on wireless network icon on the lower-right corner). The first time it seemed trying to do something but nothing worked. The 2nd time when I tried to run repair, the process hang and the machine could not be rebooted or shut off. I have to hold the power key for a few seconds to turn it off.Now, I am at home using another computer to post this message, which indicates my home lan and my router are working fine. But my laptop still has no connections - neither wired or wireless
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Jul 24, 2012
I'm currently staying at a marriott in NYC and at night after work the wireless access becomes awful. As a work around I've plugged the ethernet into my apple airport express and launched my wireless network as usual.Things are all fine and dandy for the first hour or so of browsing or watching netflix. But then it seems to lock up and I lose connection. I haven't seen any caps on data transfer that would explain it but is there something else I should be looking at? The fact that it works (albeit for a limited time), is a good sign I think. I'm mostly using it for my ipad to watch netflix etc.
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Jul 10, 2011
I have an Ubuntu box, 11.04 x64, running on a Dual Opteron SFF box (iWill ZMaxDP... pretty old machine). Up until a few weeks ago, it was acting as a Windows 2008 Server, but i moved it to Ubuntu.
Anyway, the machine will not stay on the network for any amount of time, without falling off... I have changed network cards, cables, ports on the switch, etc, and nothing seems to work. I have a Windows 2003 box giving out DHCP addresses, and for a while, i actually tured that off and setup a second Ubuntu box to give IPs... it made no difference. The box gets an IP, and can ping outside for a bit (2 min or so) and then just looses connectivity... ifconfig shows it with an IP (i have tried both Static and DHCP config) and nothing seems to work.Restarting the network stack (/etc/init.d/networking restart) some times gets a connection working for a few min, but then it falls over again..
Just to note, the main onboard network card is not showing up for some reason. I have an Intel Dual GigE PCI card installed. Eth2 is the "Working" interface, an ETH3 is not connected to anything.... Also, this is probably the first time since i installed the machine that the connection is staying up.
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Jul 24, 2011
The connection of the computer before is activating.. after how many days of using,it losses the internet connection.. what is the possible reason for this?
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Jul 31, 2012
I've got an application running on a Windows 2008 server that I have verified as live on port 8085 at localhost. I've also verified on the server itself that port 8085(and in fact, all ports) are open right now. Despite this, I have no connection to this port on the server. Let me back up a bit an explain the architecture I'm working with.windows_server >> Switch >> Firewall >> Firewall >> InternetEverything but my server is managed by my hosting company who is insistent that this is a server issue. Is there a way to find out at what point my connection to port 8085 is failing? I feel like it's stopping at one of the Firewalls but need proof of this theory to get something done about it
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Nov 16, 2011
I have a Linksys WRT54G2 router upstairs in my house that wirelessly reaches the entire house. I also just bought a Linksys Valet Plus M20 that will be my router once I get it in the mail. The problem is I want to hook up my downstairs Satellite receiver to the internet but it only has a LAN port. I cannot run a LAN cable downstairs. Is there any way to link these routers up wirelessly and then run a LAN cable to my SAT receiver? Or do I need to buy a different product?
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Mar 23, 2011
I have a laptop connected to internet via a router using WiFi.My desktop computer doesn't have a WiFi connection. I want to connect my laptop and my desktop computer using an ethernet cable in order to access the internet on my desktop computer. I've been fiddling around for over two hours with no luck so far. Both computers are on Windows 7.
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Mar 18, 2011
I am having problems with my wireless internet. I am using windows 7 64-bit OS and am connected to a WRG614v6 Netgear router. I will be on the internet and will have superb connection then my connection will drop, when i view the network it says that i have lost IPv4 connectivity. Pulling the power to my router then powering it on again fixes the problem for a hour or two but then connection is lost again.Here is the readout when connection is stable
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:UsersKyle>ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Kyles-Laptop
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid[code].....
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Oct 19, 2011
I have a server in a DMZ behind the ASA, connections to this server work sometimes and then fail others, so I dont think i'm looking at an ACL or NAT problem here.The syslogs report a SYN Timeout,I have taken a trace on the ASA, it seems that a SYN-ACK does come from the destination server within the 30sec timeout, but its not passed through the ASA back to the source ? there is one odd thing, what seems to be an out of sequence ACK from the destination which arrives before the SYN-ACK at the ASA, i'm wondering if this might be the problem ? This only occurs on the connections which fail, the connections that work, the destination responds quickly to the initial SYN, and the 3way handshake completes.
Syslogs :
Oct 18 19:17:32 nzlsudfedsi001-pri Oct 18 2011 19:17:32 NZLSUDFEDSI001 : %ASA-6-302013: Built outbound TCP connection 42327212 for IIP-ARCHIVE-PROD:172.24.32.31/21 (172.24.32.31/21) to BPO-TRANSIT:x.x.x.x/59392 (x.x.x.x/59392)
Oct 18 19:18:02 nzlsudfedsi001-pri Oct 18 2011 19:18:02 NZLSUDFEDSI001 : %ASA-6-302014: Teardown TCP connection 42327212 for IIP-ARCHIVE-PROD:172.24.32.31/21 to BPO-TRANSIT:x.x.x.x/59392 duration 0:00:30 bytes 0 SYN Timeout
[code].....
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Jul 10, 2012
I have a 1941 Cisco router with WIC-!AM-V2 card that is uning pots( regural phone ) line for data traffic.the problem I am having is the line is establishing connection but it intermittently dropos.The router is configured to dial to Centraal office and I have more that 100 other locations with the same setup that are working fine. The only differene on htis one is it is going thru a PBX line.
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May 9, 2010
I am trying to configure the ACS with AD in the identity store but am running into the following issue.I enter the AD Domain Name and username and password and hit the 'Test Connection' button and receive a DNS error stating that it 'Cannot resolve network address'.I have logged into the CLI and test to the domain name from there and it works fine.
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Aug 29, 2011
I recent bought an Asus G74SX-A1. While the machine runs like an absolute dream, it does seem to have a networking problem that I have been attempting to address for about a week. In my college dorm there is an ethernet port that carries an active internet connection. When my laptop is plugged into the port via ethernet, I receive no connection (well mostly no connection, every now and then I will connect for a split second allowing me to load my homepage, Google). This problem also exists on my dorm's WiFi. My LAN card is a RealTek BGE Family Controller (PCIe)
However, on my netbook (an Asus 1000HE, which I am typing this post on) everything is fine. I am quick to blame the retailer who sold me the G74SX seeing as they replaced the stock WiFi card with a Bigfoot Killer 1102 card, and my first assumption is that something was not installed properly during my laptop's assembly or that I simply messed up a driver update. I became quite frustrated with the whole situation and in order to find a quick solution I formatted the laptop back to factory defaults.
Something magical happened.For about a day and a half, my LAN card worked. I packed up my gear this weekend and headed back home, and at my parents' house my WiFi card worked wonderfully.I thought my networking woes were behind me, but this was not the case. When I returned to my dorm this afternoon, my LAN and WiFi cards began experiencing the same problems they experienced before the reformat. A third variable of some interest is that I brought my wireless router back to my dorm in order to utilize a less-crowded private WiFi spot and discovered that it worked fine and I was able to connect to the internet on my iPad using my router. This evening, however, my router decided to stop carrying an internet connection as well. I can connect to the router itself, but I cannot receive an internet connection, even on the netbook.
I have tried uninstalling/updating drivers for both the Bigfoot card and the RealTek card to no avail. My best hypothesis is that the problem lies in some setting that both the G74SX and the D-Link DIR-655 have in common, seeing as they are the only wired components that aren't receiving a connection.
Equipment: D-Link DIR-655, Asus G74SX, Asus EeePC 1000HE
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Mar 3, 2011
I work at a small business that has an exisiting wired network. Our setup is: Internet > ISP Box > DHCP Server > Switch > Users. I have been attempting to add a wireless router to the network to enable our shop techs to wirelessly access our file computer. I have managed to get the wireless working, but the network was not visible, I could not access any network computers from the wireless, and I could not access the wireless router from our main server. After this I screwed up the settings completely and even a wired connection to the router couldn't connect to the internet. Now I have purchased a WAP54G, but I forsee the same problems when I go to config everything tomorrow.
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Apr 11, 2012
I have a WAP54G in my basement shop, wired to our main router upstairs, which is a Linksys BEFSR81. I'm not sure if this is an issue with the WAP or the router.
I only use the laptop computer in the shop every couple of days, but I leave the laptop plugged in and on most of the time. I used to have the power settings such that it didn't power down completely even after a long time. With that setup, if i didn't use the computer for several days, it would find that the connection to the router had died. The wireless link would report that it had a solid connection, but I couldn't connect to anything. Power cycling the WAP always fixed this.
Recently, I decided to save some wear & tear on the laptop drive, and adjusted the power settings to go to standby after a couple of hours. Now, it seems I can't even go one day without losing my connection.
I am running the latest frimware in the WAP, and the router is version 3.1. I can't check the firmware version on the router at the moment, because the web interface is giving me a blank screen. I know from past experience that I will have to power cycle it to get it to talk to me again.
In any event, it seems like the router connection to the WAP is timing out. I set the router "client lease time" up to 10000 a while back when I first had this problem, but that is clearly not doing the trick.
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Oct 7, 2012
I have recently moved in a new apartment. At the building there is something like a centralized internet. There is a huge machine which is connected to every apartment of building via a cable modem(Netsys nh-300sp). Here is an image of system. And when I first came to apartment they gave me a username and password which I made login when i firstly opened a page on safari. When I plug in an ethernet cable to my macbook-air it connects and everything s good for a moment then it starts to kick me out randomly and continuously. When I look to Network Diagnostics: ISP is red, internet and network are yellow.I tried also using a manual DHPC address, but then ISP is green but Internet and server are red or yellow. I cant even reach to modems admin panel, maybe because of the system of building.
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Nov 24, 2011
I'm trying to transfer files from my wired desktop to my wireless laptop, and smaller files seem to transfer okay. Whenever I try to transfer a really large file, however, the internet and connectivity totally drops on my desktop (which is giving the file) and causes the laptop to lose the file. The desktop computer stays offline for about 1-2 minutes afterward before it either starts up again on its own or I reset the network adapter. I suppose it's important to note as well that the file transfer can fail at the very beginning, in the middle, or even at the very end, but my desktop computer always loses its connection whenever the interruption happens... but sometimes it can successfully get almost all the way through the file transferI tried following some of the steps in this case to confirm that I can ping and do all that jazz to my laptop and all of the services are running, since our problems seem similar. I've disabled all firewalls as well. However, since one computer is actually wired to the router, I don't think the solution will be quite the same
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May 12, 2012
So I keep running into an issue with my internet connection. My router and connection work no problem, until I try to update my video card drivers or even my tablet drivers. Once I install those drivers, The next boot up my computer has no internet connection, and it says the network driver has failed. I can't seem to recover internet connection until I do a system restore, then all is well. My netgear WGR614v10 is up to date, on factory settings.
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Aug 4, 2012
I recently moved into a new apartment, where our internet connection is shared with neighbors who are currently out of town on vacation. Most of my devices (Phone, Laptop, Girlfriend's laptop etc) will connect just fine to the passworded network we are meant to be on. My desktop however will not. It doesn't even see that it's an available wireless network.
This same computer was seeing/connecting to wireless networks as recently as this morning. It was also seeing another network for a little while with medium signal strength, which it now doesn't see either.
So far, I've restarted a couple of times, done the 'troubleshoot/repair' options on my wireless network icon, and verified that my wireless adapter is indeed on. I've also asked it to update drivers, but despite having no internet connection, it tells me it has the most current versions.
Normally, I would just reset the router as a first step, however because it's in my neighbors house, I don't have that option, however as I mentioned, this likely wouldn't make a difference, since several other devices, including the laptop I'm posting from now, are quite able to recognize and connect to the network in question.
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Apr 19, 2012
My wireless internet connection on my laptop. The connection seems to work fine on other laptops in the flat. It works on mine too. Then after a short time the internet connection fails and the laptop says it's unable to connect to preffered wireless network, and unable to detect any wireless networks (usually there are others around too).The amount of time before this happens seems to be getting less. I have cheched that the radio switch on the side of the laptop is on.
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Jan 13, 2012
I am trying to set up a network with my modem (Speedtouch 546T2) and router (Jensen AirLink 89300), but it won't work. No network connection on the laptop (Toshiba) nor the MacBook.Ipconfig /all (when "connected" wireless) on the laptop:In Norwegian, just ask for translation if needed. Don't think it'll be necessary however.
Quote:
Microsoft Windows [Versjon 6.0.6002]
Copyright (c) 2006 Microsoft Corporation. Med enerett.
C:Windowssystem32>ipconfig /all
Windows IP-konfigurasjon
[code]....
I have updated the router's firmware. Reset both the modem and router as well.
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Feb 22, 2011
2950s work fine when upgrading the IOS using CNA. On all 2960s I get Failed to execute the command archive download-sw /overwrite /http iosFile
If I run the command using telnet and tftp server it works fine.
I have tried by deleting the old image then trying upgrade using CNA, but no luck
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Jan 21, 2013
We have a network of over 20 devices, all kinds (windows, android, mac enz...). Everything was going well until one of the mac-users tried to publish his website that contained a movie (at first the movie was 622 MB). If this user presses publish the internet is going away. The website won't publish, waiting doesn't work. While the internet isn't working I went to another pc in the network and started some ping experiments. I can ping any device in the LAN, outside the LAN something strange happens: let's say for 6 seconds it is ok, but then it fails for lets say 20sec, again 6 sec the ping returns ok (45ms), and goes down for a longer period. Eventually it is not coming back.The mac user himself cannot access the internet either. When the publishing is stopped, the internet is back in less than a second.
This problem is recent, and it isn't the first time this user published a video on his own website, on the same host with the same application (iWeb). I asked him to publish his site to a local folder and hand it over to me, I tried to publish it to the same host using my own FTP application (FileZilla), this worked without any problem (I am on the same network). This is what we tried:
- Compressing the video (it is now 26 MB, still not working), we have 2GB space from the host, no limits on filesize.
- Publishing the website without the video's, no problem
- I turned on logging (debugging level) in the modem/router, no entries at the moment things went wrong...
- I called the provider, they claim nothing is wrong at their systems.
So, can the modem be broken? I don't think so because I can use it with far more intensive tasks without going down.One thing is clear, it shouldn't be possible for one computer to block the internet for everybody, so changes in the configuration are needed (I think).
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Apr 4, 2012
I have 4 computers (3 laptops, 1 desktop) in a shared office. We get internet access using their wireless network. All works fine. However, I need to share a printer amongst all of the computers. The printer is LAN enabled and I would normally just put all the PCs on a hub, together with the printer and share it that way. BUT my question is can we access the internet using the wireless network and the printer using a separate wired network at the same time?
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Oct 10, 2011
I have been involved in the Networking of a museum with a set of "Show" computers which display video, and for this reason cannot have anti virus installed becuase of the performace hit, and also the risk of pop-ups on the videos. They do however need to be connected to the internet as some are interactive and allow people to send simple emails, and they all need to allow remote support when things go wrong.It seems the networking was not thought out very well initially, and there is a single wireless router which serves the staff and public on a secured wireless network, but also serves the "Show" machines via a wired connection from one of its ports, which then connects to a master switch which serves the show machines.Now the wired and wireless is on the same network, and everything shares the same IP subnet (192.168.1.xxx), and this is not a good situation in terms of the securuty of the show machines on the wired network. So I need to work out a way to totally separate the wireless network (which will be very prone to people opening viruses in their emails etc), from the wired network (which will be the show machines which wont be touched by anyone).
I want to achieve this in the simplest and easiest way, and have been reading about the possibility of setting up a second wired router behind the current wireless one, with a different subnet IP address, to which the "Show" machines could be connected. The WAN port on this second router would connect to a LAN port on the wireless router, and thus the show machines could get their internet, but separated from the dangerous wireless network.Does this sound like a sensible start? Will the fact that the wired router (and show machines) are on a completely different subnet to the wireless router (and wireless devices), mean that the wired network will be protected? Or do I need to do more? And is this likely to work?
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Nov 24, 2012
[code]...
I came here after spending a long time of trying to figure out my problem. The problem is, my router will send a signal strong enough to my room because of the thick walls. I have a wire in my room that I connect to my computer for internet. I also have my xbox and other internet enabled devices that I would like to use. Is there some way I could buy a router for my room that gets the internet from a wire? Could I use my computer as a router?
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Aug 23, 2011
I have 4 PC's connected to a router, only one of the PC's connections keep dropping every few minutes for 20 seconds or so then reconnects, I can't figure out why it is doing it,
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Jan 30, 2012
My computer is a 32 bit, Win7 SP1 with Pentium Dual Core 2.6 Ghz and 2Gb of Ram on a wired network. My wife has a similar system using a wireless network. She can ping my IP Address, but I cannot ping hers. We both have full access to the Internet. We are using the same workgroup, and both computers have file and printer sharing enabled and IPv6 addresses and DNS server addresses selected automatically.The problem appears to be with my computer?
Here are my system stats:
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 32 bit
Processor: Pentium(R) Dual-Core CPU E5300 @ 2.60GHz, x64 Family 6 Model 23 Stepping 10
Processor Count: 2
RAM: 2013 Mb
Graphics Card: Intel(R) G41 Express Chipset, 782 Mb
Hard Drives: C: Total - 76308 MB, Free - 49226 MB; D: Total - 286167 MB, Free - 52893 MB; M: Total - 38154 MB, Free - 7 MB;
Motherboard: ASUSTeK Computer INC., P5G41-M LE
Antivirus: Microsoft Security Essentials, Updated and Enabled
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Mar 26, 2012
I have a wired connection & i bought a laptop can i have a wifi & wired connection at same time or can i connect my wireless router to my wired router?
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