Network Access Drops For 10 Seconds At Random Times

Nov 7, 2011

We have a bunch of computers(70 aprox) connected to a domain. Since couple weeks ago very strange issues started occuring, internet and network access(path to network share is lost) would come up at random times and on different machines and would last for about 10-20 seconds it would re-connect again.All the computers are using private addresses.Most machines are windows 7, some are xp.Using Windows server 2003 as dc.Since the occurance is so random it's very hard to pin point the cause.

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Connection Intermittently Drops At Random Times

May 9, 2012

We recently moved and upgraded our internet service from 1.5 Mbps to 4Mbps with CenturyLink. However, since our service was activated last Thursday, the internet connection intermittently drops and will not recover unless I reboot the modem. The period of up-time will last anywhere between fifteen seconds to several hours, usually falling along the five-to-ten minute range. No difference when using ethernet/wifi. The DSL light stays on, and the Internet light remains on as well.

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Small Network / Random Computers Lose Browsing At Random Times?

Dec 29, 2012

Network running about 60 computers, most of which are running windows 7 professional. Some are on a domain, some are not.At (seemingly) random times, some computer on the network will lose the ability to browse websites (including the web interfaces of networked devices). I can't identify what circumstances cause this to occur. I only find out about it when someone calls me.From the affected computer:I can ping sites I can ping our Cyberoam UTM (which acts as our DNS, DHCP, and firewall)disabling/enabling connection doesn't fix the problem releasing/renewing ip doesn't fix the problem flushing dns doesnt fix the problem uninstalled antivirus on two test machines, problem still randomly manifests.replaced the Cyberoam with newer model users have claimed that if they wait a long period of time (40+ minutes) the problem sometimes resolves.rebooting the computer resolves the issue until it randomly occurs again changing the computer's mac address also resolves the issue until it randomly occurs again.

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Internet Access Keeps Dropping At Random Times

Feb 17, 2011

I have a brand new Dell laptop running windows 7 connected to a sky router wirelessly. My internet connection randomly just drops. At 1st I could just click on the yellow triangle and troubleshoot and it would reset the network adapter. I cannot do that now - Im having to disable the adapter and the enable it and Im back on the internet.I have set it up so I am connecting via a manual IP address as I wondered if when the kids PS3 was connecting it was pinching my Ip address.

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Home Network :: Getting Random Moderate Nat Sometimes - Other Times Its Opened

Nov 25, 2012

I keep getting random moderate Nat sometimes, other times its opened. I have made a static Ip and port forwarded 4 ports that xbox uses. 88 udp..3074 both...53 both...80 tcp... Now when i test my connection on the xbox dashboard a message will come up saying make sure my UpNp is enabled, which it is and it tells me to make sure port 3074 is enabled which it is. I have restarted both my modem and router multiple times to try and fix this.

I have a linksys cisco e4200 and I recently updated its firmware which i thought would possibly fix the problem.I have talked to linksys but no luck.I have talked to my internet Cox Communication but they tell me its the router and i believe it is because when i directly connect my xbox to the modem i never get the moderate Nat. I have also talked to Norton about my virus protection because I thought maybe it was blocking some ports, but they disabled it and I still get the message.

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Cisco Switching/Routing :: 2975 Not Handing Out PoE Power To Phones And Access Points At Random Times

Oct 22, 2012

We currently have around 150 2975 switches and have had problems with it them not handing out PoE power to the cisco phones and access points at random times.  There is plenty of power left for the switch to use.  We have at least 15 that will be running fine for about a week and then all of the devices that use PoE power will shut off and will not come back on until we reload the switch.  If you console in there aren't any messages that pop up and if you look at the port it just shows on connected or will show IeeePD in the power inline.  We have contacted Cisco TAC and they just RMA them. 

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Home Network :: Random Network Drops / Disconnects Services?

Apr 15, 2011

I've been having some issues with my network connectivity for a while now, and I haven't been able to figure out what the problem is. I run a wired connection to an Ethernet port in the wall of my university dorm. I have verified that it is not a global network issue or an ISP issue; this problem only happens on my PC.My network connection drops/disconnects randomly throughout the day. When I say disconnect/drop, I mean that all attempts to ping or access the internet fail. A few minutes pass before the Network and Sharing center task tray icon shows a warning sign saying that my computer could not connect to the internet.This is temporarily fixed by doing an ipconfig /release and ipconfig /renew, but I have to execute these two commands about 2-3 times a day on average.

There is no exact interval between the disconnects, nor does it happen when I am running particular programs. The disconnect happens regardless of what I am doing at the moment (gaming, browsing the internet, leaving the computer idle).A month back, I installed some Windows Updates and suddenly my internet connection was almost completely broken. I was experiencing the same issue, but much more frequently. My internet would die within 10 seconds of executing any download, but Windows wouldn't recognize that something was wrong. At first I thought the ZoneAlarm, Avast!, or the SafeConnect (as required by my university) services were causing trouble but uninstalling/disabling these services did not fix the problem.I also tried reverting to my default ethernet drivers, which did nothing. I uninstalled and reinstalled multiple versions of my drivers to no avail.However, the internet worked just fine in Safe Mode with Networking, so I cross-referenced the processes/services running in Safe Mode w/ Networking against my normal startup, guessing something else was at play.After some poking around, I discovered that disabling the Server and Browser services permanently fixed the issue of instant connection death. But the initial problem I described still remains;random, less frequent internet connection drops.

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Random Disconnecting For 10-20 Seconds Every Few Minutes

Mar 26, 2011

So...few days ago this is happening even more frequently, my service is from Verizon wireless. Its getting really annoying when i randomly disconnecting while im doing something important or its so slow it takes 4 minutes to load one page. Im in the basement so is my modem. Im using windows 7.

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Wireless Internet Disconnecting Then Reconnecting After 30 Seconds 50+ Times A Day?

Nov 19, 2011

Basically, my wireless internet has been disconnecting then reconnecting on weekends up to 50+ times a day. The weekend also seems to be the time when I have 10+ wireless connections in range. Can that be the cause of it? I have tried changing my router channels but to no avail.

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Router Disconnecting At Random Times

Jul 22, 2012

The router is being good so far. I have a Belkin Wireless G Plus MIMO router with windows XP operating system. This has been going on for a couple of weeks now and I really want it to stop because it is stopping me from doing things that require the internet.

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Internet Would Just At Random Stop For Like 2-3 Seconds Then Catch Up With Itself?

Jun 19, 2011

my internet would just at random STOP for like 2-3 seconds then catch up with itself. I have 3 computers, 1 printer, a laptop and an xbox all setup on a NetGear N300 Router. the 3 computers and xbox are directly connected to the router. the printer and laptop are wireless.The Road Runner Modem is a CISCO Cable Modem DPC2100R2. Now when this random STOP happens... on programs like Teamspeak peoples voices cut out but then quickly catch up with themselves. On Black Ops PC and Xbox everyone freezes for a few seconds then catch up to themselves and I'll get a connection interrupted. I'd be asking friends around me to see if they got that "Connection Interrupted" and they say no. On Rock Band 3 I get randomly disconnected from the game with everyone asking what happened...When this STOP happens... my computer doesn't give me any error message like "Local Area Connection is unplugged" or anything like that. I've tried checking my CISCO modem's log and it shows no problems.Last week I swapped out the Road Runner Modem at their swap shops to see if that was the problem. Obviously it isn't. The Router I had before the NetGear did the same exact thing except it was a westell...I've tried directly connecting the modem to the computer and trying that to see if there was some kind of miscommunication between the router and the modem... same thing.

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Internet Connection Keeps Disconnecting At Random Times?

Oct 26, 2012

I have fiber optic Internet with static ip and keeps disconnecting at very random times. It started 3 weeks ago, before it worked perfect. Most of times dcing 3 times per hour. But sometimes working for hours without dcs. Usually disconnects only for half minutes then reconnect, it can be very annoying. The provider keep saying that need change router. I'm tried three different of routers already, but keeps disconnecting. I'm tried connect the net directly into my cpu, without router, but not worked, dc-ing too. I tried ping the default gateway when its disconnected, and its saying: request timed out.What else can i try? It should be, that the provider has too many clients, and their router collapsing?

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SMCD3GN - New NIC Losing Internet At Random Times?

Jan 29, 2013

I've been having some problems with my new custom built computer connected wirelessly to my Router. My router is an SMCD3GN. So it is a Router/Modem in one. I am currently using the Linksys AE3000 Wireless-N USB Adapter. I have had a past Wireless USB Adapter, & an internal Wireless network card. The USB quit working & in order for me to get it to work is I have to reinstall the drivers everytime I turn my computer back on. The internal wireless network card would randomly lose internet every 30mins - an hour. Being a gamer, this is very frustrating. So, right now I am using the Linksys USB, and I was just playing a game & talking to some friends on skype & I would lose internet for 2 seconds then it would automatically reconnect. So I am beginning to think that it might be my Router but I tried my USB on my laptop for like 10 mins (I disabled the internal wireless network adapter) & I went into cmd.exe and pinged google for about 10 mins, & it said "Request Timed Out." several times.

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Lenovo Y 560 - Computer Has Been Disconnecting At Random Time For 30-60 Seconds

May 3, 2011

I'm using a Lenovo Y 560 using a wireless connection to an Apple Airport extreme. I have been using this set up for a few months without any problems. However, recently, my computer has been disconnecting at random time for 30-60 seconds. There isn't any lag before or after and this occurs when gaming or browsing. The weird thing is, there are about 15 other PCs and Macs using the airport and none of them are experiencing this problem. I used my 'one key recovery' button and restored my computer to the factory default and updated/reinstalled all wireless drivers and the problem still persists. At this point I'm stumped, any suggestions?

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Slow Internet At Random Times (usually During Peak Hours)?

Apr 30, 2011

isp is Comcast. They have had 2 techs come out here to look at problem and found nothing. I'm on a wireless connection with router in the next room. Modem was replaced a week ago and still problem persists. Landlady says she has no problem (shes the one in the next room and is connected directly) but I think that because she doesn't notice (I play online games so its very noticeable). I have excellent signal from router. This is my report:

Windows IP Configuration

Host Name . . . . . . . . . . . . : *****
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No

[code]....

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Cisco Wireless :: AP 1141 Disassociating At Random Times

Mar 24, 2013

We have about 15-20 APs out in the field, and at random they seem to disassociate from the WLCs and re-associate within a few minutes. We have not looked into that entirely yet, but we are having an issue with a few. Sometimes, they will disassociate and after a few hours reassociate.

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Huge Latency / Ping Spikes At Random Times With No Apparent Cause

Jun 20, 2012

Since about 3 weeks ago my DSL has been getting totally random ping spikes, from under 40 to over 1500MS for minutes to hours on end. Nobody else is using my internet, I've verified this. There is nothing sucking up bandwidth on any connected device or computer, as far as I can tell through troubleshooting to the best of my ability. I tried switching to a Cisco X2000 modem/router combo and it did nothing, still totally random latency. Also, when I called AT&T about this, they didn't even know what ping was. They ran an upload/download speed test (which is still mostly consistent regardless of latency) and told me I was basically making the issue up.

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Cisco WAN :: 2911 Router Hanging / Freezing At Random Times

Dec 16, 2012

I have a 2911 router hanging/freezing at random times, could work fine for a week then crash, or sometimes, could only go a few hours, completely random with timing. The onyl fix is to manually pull the power and reinsert.When this happens, all services/access stop working, including nothing on console access.This was on 15.2.1.T1 which im aware, has a few bugs, so i upgraded to 15.2.1.T2.The issue continued, so I swapped out the 2911 with a brand new one. The issue is still present.
 
One interesting thing, is when the router crashes/freezes, all lights appear to remain on working as usual, but when i unplug any of the ethernet links, the lights still continue to remain flashing and on for the ethernet LEDs, even once i have fully removed the cat6 cable.

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Acer Laptop / IPhone And Xbox360 - Disconnecting At Random Times All Day Long

Mar 12, 2011

i have an acer laptop an iphone and an xbox360 running on my connection not always all at once but my connection just randomly cuts out at any point whenever im on xbox live i get disconnected and i look at the router and its just resetting itself and i have to go and reboot it or just reset it and wait a wile before it will come back on. but even when it is on its not for long before it goes off on its own

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Linksys Wireless Router :: E4200 Disconnects Internet At Random Times

Oct 14, 2011

I check all of the settings and changed the channel to see if it works.  For some reason it disconnects my wireless internet at random times and i know before it never use to do that before with a older router. There is nothing blocking it, it worked before, and my computers can connect except two.  The only thing i can guess is my wireless card. 

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Linksys Wireless Router :: Wrt400n / Wifi Stops Broadcasting At Random Times

Nov 10, 2011

The wireless drops specifically from my laptop constantly at random times. When the wireless drops in order for me to be able to reconnect i have to restart the router itself. There are also random times where the Wi-Fi stops broadcasting altogether. I have a computer connected via Ethernet and it does not lose connection during these times. All the computers are running Windows 7 and the Router is up to date on firmware.

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Linksys Wireless Router :: E4200 Dropping Apple IPad 2 At Random Times

Feb 8, 2012

Had an E4200 for a couple of months now and have not been able to resolve an issue with the router dropping an Apple iPad 2 at random times.The E4200 is replacing a Cisco Aironet 1200, which never dropped any clients, iPad 2 or others, and never displayed any of the issues below.
 
TECH DETAILS:The E4200 is being used purely as an access point.  All extras are not in use and are disabled.

Firmware 1.0.03
Hardware version 1.
 
BASIC ISSUE:The E4200 drops an Apple iPad 2 off the 2.4 Ghz Mixed (B, G, N) network.  The user must then select the network to rejoin.  Rejoining occurs without incident.  The same issue occurs when the network is restricted to B, G.  The drops occur at what appears to be random intervals - sometimes 10 minutes apart, sometimes hours apart.  We can have as many as 6 drops in an hour.  A ping to the apple ipad shows the device stops responding to pings about 10 seconds before the user is prompted to rejoin a network.  Meanwhile, a ping to the E4200 itself from a laptop connected via the E4200 on the same radio as the ipad continues to work without fail during this incident.

1. The iPad 2's cannot connect to the 5Ghz radio.  I believe iPad 2's are supposed to support 5Ghz.

2. Both our Apple TVs do not connect to the 5Ghz radio: they fail with a "There was an error connecting to the network. Check your settings and try again. (-3914)" error.  Apple TV supports 5Ghz.

3. The admin interface for the E4200 is very slow sometimes.  Probably over 20 seconds to render some pages when it gets really bad.  As a comparison, Internet-based pages on fast sites that delivered via the E4200 itself load in less than 2 seconds.

4. The HTTPS version of the admin interface can only be connected to via Safari browers.  Both Internet Explorer 9 and Chrome 16 fail to connect with a "Connection reset" error.  In Chome, it says "Error 101 (net::ERR_CONNECTION_RESET): The connection was reset."  This is across multiple devices.  There is no issue with straight HTTP.
 
All other devices - including Macs and PCs - connect fine with the E4200 on both 5Ghz and 2.4 Ghz radios, even if they cannot access its admin interface via HTTPS.I've presented quite a few issues above, but the main one is the drop outs for the iPad 2 devices.  I'd present logs on drops, but the thing doesn't record any useful logs.
 
Basic wireless config:

5Ghz:
Network Mode: Wireless-N Only
Channel width: Auto (20 or 40 Mhz)
Channel: Auto (DFS)
SSID Broadcast: Enabled

[URL]

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Internet Drops 3 To 20 Times A Day?

Mar 13, 2013

I have an ADSL 2+ connection that constantly seems to be dropping at random intervals for no particular reason that i can tell anywhere from 3 to 20 times a day for over 6 months.I have a Dlink DIR-300 router which connects hard 2 pcs and a wirless connection that host for 4 devices , the Router is connected to my Dlink DSL-502T Gen 2 ADSL 2+ Router.I'm constantly having to disconnect the power wait 5 minutes and reconnect the power to get everything back online. From what i can tell the main problem is the DIR-300 router, ive checked it has the latest firmware, reset the router from factory, tested it with less connections, called up my ISP and checked everything was good on there end but to no avail[CODE]

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Wifi Drops Off Every 20 Seconds Like Clockwork

Nov 9, 2011

Just three days ago, all of a sudden, my net drops off every 20secs like clockwork, only affecting the wireless.At the moment, my router is connected to the modem, and my computer upstairs is running through the wireless connection from the router (not the modem) - though it makes no difference the problem happens with either.

[code]...

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WNDA3100v2 - Wireless Drops Every 30-60 Seconds

Jan 28, 2011

My wireless network is connected through a Netgear WNDR3700 router. My pc (see sig) connects to the router via a Netgear WNDA3100v2 adaptor.

Every 30-60 seconds I hear the audible alert & dialog box telling me my computer is now connected to the internet. So that means every 30-60 my computer must be losing access to the internet. I've been pulling my hair out trying to figure out what's going on, to no avail.

I've done all the obvious troubleshooting.

- rebooted cable modem
- rebooted router
- uninstalled & reinstalled drivers
- connected via both 2.4g & 5g radios
- reset & reconfig router settings

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Laptop Drops Internet Connection After 10 Seconds

Apr 27, 2011

New laptop, connected to my home network which is very stable and has no history of connection issues. After about 10 seconds the laptop drops the connection. Sometimes it'll come back for a while sometimes not, haven't observed any pattern in this yet, All I've done since starting the computer for the first time is installed all the junk that comes with it (Nero stuff mostly) and installed all windows updates (there were over 60 of them) and AVG Free edition. Before doing all that the connection was still not right but it did hold for a lot longer than 10 seconds. It held for over an hour downloading programs like Itunes, AVG and Firefox, Going to control panel > network sharing centre when the connection is down I see the yellow exclamation mark between my computer and my network. Troubleshooting this resets the network adapter, gives me the error 'The default gateway is not available' and says that it is fixed. The connection then works again for about 10 seconds and drops once more.

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TL-wdn4800 Wireless Connection Drops Out After 40 Seconds

Oct 18, 2012

I've recently bought a new desktop with a TL-wdn4800 wireless device. when i start up i instantly get full bars for my wireless however after about a minute, it drops down to one bar, and becomes hardly usable. i'm wondering if this is the device turning itself off and reverting back to the default inbuilt wireless device?

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Netgear N600 Router / Wifi Drops Off Every 20 Seconds

Nov 8, 2011

My net drops off every 20secs like clockwork, only affecting the wireless.I bought a new router yesterday to see if that would work, but it hasn't. At the moment, my router is connected to the modem, and my computer upstairs is running through the wireless connection from the router (not the modem)

My router is a NetGear N600 Wireless Dual Band... and my modem is a NetGear Rangemax wireless My computer is running Windows 7 and has a Realtek RTL8191SU Wireless LAN 802.11n USB 2.0 Network Adapter(im connecting to my network via the 2.4ghz... not the 5ghz)I've tried doing the whole, ipconfig/ release

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Broadband :: Actiontec PK5000 Drops Signal 7 To 8 Times Every Day?

May 10, 2012

Why do I have to reboot my Actiontec gateway 7 or 8 times a day? Is this normal now days with any of the DSL services? I have Century link New computer.

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Dell :: XPS 8500 Special Edition - Internet Drops Every 5-10 Seconds

May 6, 2013

I've been having an issue with my Dell, when it goes into Power Save Mode (not Sleep or Hibernate), my Graphics Card crashes and I can't see anything when I move the mouse to Wake Up my screen. This is something I have come to live with since I hear the Power Supply for my Graphics Card is too weak (AMD 7870). Sometimes, I have to do a Hard Reboot by holding the Power button and then restarting the computer.

I did that yesterday and realized that my internet connection keeps cutting every 5-10 seconds (literally). I'm running Windows 7 Ultimate. What I did so far was uninstall the driver and get the latest one. That hasn't worked at all.

I have 2 other devices connected to my Wi-Fi, a Dell Laptop that is working perfectly and a smartphone. Both of these haven't been dropping the connection at all. I'm thinking that either something became corrupt by doing my Hard Reboots or it's some kind of compatibility issue. I bought this computer in November 2012 and haven't had an issue like this since but now I can't do anything on web because it takes ages to visit websites.

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D-Link DIR-655 :: Wired Connection Random Drops?

Apr 12, 2011

I should start by saying I am no novice when it comes to networks but this router has been nothing but a issue since day one.

*The Setup - 2 wired PCS, 2 Wired Macs, 1 Wireless Iphone, 1 Wireless Ipad.
WPA2 Only / AES key, Channel 6, G/N only, Hidden SSID.

*The Problem - 95% of the time the wireless and wired is running fine. However, Sometimes randomly webpages on the computer will stop loading... but heres the kicker... other internet connected programs like Ventrilo, or torrents, or games will still be working and running from the net like there is no problem. When this happens the internet browsers on the macs and PCs will say page cannot be displayed instantly. Happens to all computers at the same time. After about 10min the webpages will load again. I have 16mbs internet and while this is happening my games and voice chat programs do not go up in ping at all.

I have turned off QoS since that made the most sence... but other then that I have no been able to figure it out. I even turned off wireless while it was happening and it still didnt fix it. A sure fire way to fix it is to restart the router.

I am 100% stumped. Do I just have a bad out of the box router? it is only 2 weeks old.

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Linksys Wireless Router :: WRT120N Drops Connection Several Times A Day

Jan 23, 2011

I have a WRT120N router .It has something to do with turning on or re-introducing certain wireless devices into the area. When I come home with my iPhone & my wife is on her computer, suddenly the wifi stops. And vice-versa. It's ridiculous. I'm not a computer programmer but if I was I'm pretty sure this would be a no-brainer to fix. Especially if the company that paid me took pride in their products.

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Linksys Wireless Router :: WRT120N Drops Connection Several Times A Day?

Apr 9, 2012

my router drops connection several times a day. I have to unplug the router every day so that my devices can stay connected. I hate when this happens late at night when i'am upstairs and have to go 2 stairs down to get internet on my devices. For example if i want to connect my iPhone to my Wireless network it gives me an error with: 'No connection can be astablished with this network'. 

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