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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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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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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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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Jul 12, 2011
I installed the RV220W Router in my office about 2 weeks ago and everything works perfectly for 3-4 days but then my connection drops out and the router must be restarted to restore connectivity. When I say the connection drops basically the internet connection drops out and my network connections drop shortly thereafter. Usually the wireless connections lose connectivity followed within a few minutes by the wired connections.
Is there something in my firewall settings that could cause this issue? I have checked with my ISP to verify there are no problems on their end.
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Nov 9, 2010
I have a WAG160N v2 and a UK Online broadbad account, windows xp. The connection intermittmently drops out, approx 15-30 times per day. I have spoken to my ISP and had the line checked (no packet loss issue), checked the settings on the router against my ISP and also updated the router firmware all with no improvement.
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Oct 18, 2011
For eight months we have not had any problems with our new WRVS4400N (V2.0.2.1) connected to a Verizon/Westell 6500 to provide DSL internet for our network with DHCP on our server... No changes have been made to the router or modem since initial setup; but, then it started -- Our internet connection would drop intermittently. Sometimes every 5 or 10 minutes - sometimes every hour. Verizon has tested the lines which came up ok, then they sent a tech who changed the wire pair coming into the building for the DSL line and retested the lines which again came up ok, then they provided us with a new modem (now a Verizon/Westell 7500). After all that, the DSL still connects then disconnects intermittently. I am now wondering if the issue lies with the WRVS4400N.
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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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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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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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Jun 14, 2011
I'm having some rather odd issues with my wireless connectivity. Running a draytek 2830n router. The wireless connection drops out at random sometimes, at other times it connects (shows full reception) but does allow any kind of internet connection. Plugging in by lan cable allows normal function.I have no clue whats going on but I did just notice that shutting down one of the laptops connected to the network (Dell lx502) appears to have solved the problem for the moment. I've not had a chance to test this as a long term solution. However I believe this is the only laptop with a dual band wifi card.This problem was also occurring on our previous router, a draytek 2820vn but the symptoms were a bit different and this laptop was not there at the time.Is it possible for one machine to knock out an entire wireless network? The other change I made yesterday was to activate the bind ip to mac function on the router for our new NAS as I was messing around with ftp configurations.
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Mar 5, 2011
I have a Motorola surfboard sb5101. Provider is comcast.I have never had any problem with my equipment until now. Here is whats going on. I bought a used sb5101 a week ago so that I would not have to pay the rental fee anymore. Comcast activated it, and it worked fine for a week or two. The other night I got disconnected from XBOX live randomly in the middle of a game. Thought maybe just a hickup, no biggie. Well it happened 3 more times in a few hours, then again the next day.So thinking maybe this used modem is bad, I plugged back in the rental from comcast which I still had. Worked fine for a while, then the same thing, random dissconnects after 10 min, 30 min, 2 hrs into a game...etcOn both modems, the 1st and 4th green light are solid, the 2nd and 3rd green light are flashing when the connection from LIVE drops.So I'm starting to think know that neither of the modems are bad. I then try going directly to the modem instead of the router, never had any problems with the router but figured I try.I even went into the attic and got rid of the 4 way splitter that feeds cable into all the bedrooms and put in a 2 way instead hooking up only the cable line im using for xbox. Thought maybe the signal is getting degraded to bad, eventhough never had a problem before.So now I'm practically hooked up right to the line coming off the street, ethernet cord plugged directly into the modem, no router. Still dropping connections randomly with same 2nd and 3rd light flashing.The connection needs to be completely stable for multiple hours.Also, I called comcast when I had to reactivate the rental modem, so they did refreshed that modem and reactivate it, but still had the disconnects the next day.
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Mar 28, 2013
We have several 5508 controller with 1142n access points some access points unjointed from the controller and do not rejoin. It is not always the same access point and it does not happen in any order we can find. All access points may stayed joined for a couple days then one may disjoin, we can bounce the Poe port on the switch and the access point will reboot and rejoin. When looking at the switch port it shows power and link connection to the ap but we can not ping the ap. usually the ap led will be black or out.
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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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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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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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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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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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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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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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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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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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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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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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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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Sep 14, 2011
My Linksys Router WRT54G has recently (yesterday) started dropping the internet after being online for a few hours.The current setup has been in place for several years. I started with the Broadband provider and they verified that the signal and cable modem is working properly. My own tests back this up. At first I simply reset the router. Unplugged it for 30 seconds and plugged it back in. Internet is back. Then I tried resetting the cable modem and the router. This works as well but the problem presists. Resetting the router alone has the same affect.So, something with the router is causing it to drop the internet. The network does not drop however. I can still use my network drive and the computers indicate a network with no internet connection.
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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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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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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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Mar 15, 2013
I'm trying to troubleshoot a random packet drop issue for an IPSec tunnel between two VTIs. For over a month, we didn't see any issue, and starting today, we have up to 30% packet loss across an IPSec tunnel.
After some analysis, I concluded that the packet loss happens somewhere on the path from the uc520 to the 2921. Packet counts show up correctly on the uc520 physical egress interface, but the packet count is low on the ingress interface on the 2921.
Pings outside the tunnel along the same path are fine.
I also cleared the tunnels on both ends and after they reestablished, the issue was still present.
Any pointers on finding where the packets get lost?
rr-hq-2921#ping 10.1.13.1 source g0/1 rep 100
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 10.1.13.1, timeout is 2 seconds:
[Code].....
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Jan 6, 2013
Lately I've noticed some strange behavior on some of the switch ports. When I go through the logs my SGE2000/2010 stack, I see that some of the ports randomly lose their connection:
2147482703 05-Jan-2013 04:11:43 Warning %LINK-W-Down: 2/g14 2147482704 05-Jan-2013 03:35:20 Warning %STP-W-PORTSTATUS: 2/g33: STP status Forwarding 2147482705 05-Jan-2013 03:34:50 Informational %LINK-I-Up: 2/g33 2147482706 05-Jan-2013 03:34:47 Warning %LINK-W-Down: 2/g33 2147482707 05-Jan-2013 03:34:19 Informational %LINK-I-Up: 2/g33 2147482708 05-Jan-2013 03:34:17 Warning %LINK-W-Down: 2/g33 2147482709 05-Jan-2013 03:34:15 Informational %LINK-I-Up: 2/g33 2147482710 05-Jan-2013 03:34:14 Warning
[code]....
I'm having trouble locating the source of the problem. The devices connected to the port are servers and desktops. This happens frequently throughout the day, but not always on the same ports. What could cause the random drops?
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Jun 29, 2012
Router is connected to my ISP with the option Keep alive and redial value of 20 seconds (the lowest i can set). There are two distinct problems: Router drops connections at random intervals. It can happen once a day or several times a day. It always happens overnight (so every morning it isn't connected). This doesn't seem to be related to ISP as direct connection to computer is stable.The Keep alive option isn't working. When it drops connection it isn't trying to re-eastablish it for at least 2 minutes (the longest i have waited so far, 6 times the redial value configured). Producing external traffic (e.g. constant pinging of some host by IP address, refreshing some web page) doesn't work. When i log on to admin console (browser based) simply clicking connect button brings connection back online. I've even been looking at status page constantly refreshing to see if it ever made a single attempt and it appears it didn't.I did my "homework" before posting (upgraded FW to 2.0.02 build 3, finetuned MTU).
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Apr 3, 2011
Recently been taking my Laptop installed with Win7 Pro to a Friends and was sharing his Wireless connection from Belkin ADSL2+ wireless router and notice that every now and again the wireless connection would drop out and the only way to regain a connection to the reset the router. My friends network has two laptops on it connected wirelessly with Windows XP home edition SP3, and a Desktop PC with XP also on connected to router Via Ethernet, also a Windows Home Server and XBOX 360 also connected by Ethernet, My friend since updated his laptop to Windows 7 Home Premium and is using the Wireless connection which now finds intermittent loss of connection which can only be restored by Resetting the Router. why a Router should lose connection just by connecting a Win7 laptop wirelessly or is there more to it than that.
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