Random Network Dropping Mac Devices Only?
Sep 15, 2012
I have a mix of devices that all access the internet via a Deutches Telkom Speedport W 723v my windows devices, HTC phone and even the iPad 2 never have a problem, but my Macbook Pro (Unibody Late 2008 model) and my iMac (Probably 2007 / 2008) keep having a problem with the network dropping out. To fix it I have to switch off Airport and switch it back on again and it re-connects straight away.The Mac OSX software albeit now rather dated on both devices (The Macbook is 10.5.8) is kept up to date using Software Update.The problem amy also now be affecting my APPLE TV2 it never had a problem before but now I cannot connect to iTunes on my Macbook using Home Sharing it just does not want to connect!!!I did try before going into the Speedport and changing channels from AUTO to channel 1 but that did not resolve it. I am going to do it again and try a different channel but logging onto the Speedport is an absolute pain, I can only login using my Macbook Pro when it is booted into Windows XP and on Ethernet as we had all sorts of problems setting it up and could only do it using IE not SAFARI and now the Speedport login only recognises 1 x PC for logging in, if you try a different device it throws a wobbly and locks up!
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Jan 15, 2012
We are having an issue on our domain where both internet and network connection drops at random, this lasts from about 30 secs up to a minute.The Domain server is running Server 2003 and we have afew XP and a few windows 7 machines.All of this is behind a SonicWall TZ-200 firewall.[code]
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Apr 20, 2011
I noticed a TON of random devices showing up in my Network within Windows 7. When I say a ton, I mean 739! I am not computer illiterate, but definitely not a pro. My router is WEP password protected, so I'm not sure on earth is going on here. I thought maybe I had a torrent program open that could be affecting this somehow, but I don't..
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Nov 18, 2012
Recently I've pulled a PIX 501 out of a closet (having never been used) and configured it for a VPN with my PIX 506e at an offsite location. This offsite location has a PC, Printer, Access Point, and remote VOIP phone. The VPN itself works great, but periodically the PIX just drops some network devices, specifically the Access Point and the Firewall. Both devices stay off until I reboot it (through an SSH connection) they then spring back to life.
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
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Jul 25, 2012
I have recently deployed a wireless network using a WLC 2504 with 21 Light APs. All seems fine except that Apple Devices drop their connections every 15 minutes or so. A couple of minutes later they can reconnect but obviously something is wrong.
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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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Apr 4, 2013
My DIR 651 randomly drops connection, is not set for IP fragments (error on PS3 even though I set MTU), and has a flashing green globe compared to my other DLink router which has a solid green globe (replaced with DIR 651). I have BHN Road Runner Turbo (Speeds of 30mb/2mb) and my modem (supplied by ISP) is a Motorola SB5100.
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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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Jun 3, 2012
Our wireless has worked fine over the past couple of years, both mine and my mom's laptops having no problem connecting. We bought Roku not long ago, which connects your tv to the internet so you can use netflix, hulu, etc., and it had no problem connecting. Now, it just stopped connecting. It detects the network but just wont connect to it. The password is right and everything. We also have this problem with an iPod touch, tablet, smartphone, and wii.
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Nov 15, 2011
I have a WRT120N, and have set up connections like this:
Desktop PC: Hardwired Ethernet
Laptop: Wireless
Xbox 360 (1): Ethernet
Xbox360 (2): Wireless
Networked Printer: Wireless
The hardwired connections are fine, but at random the Printer, laptop and wireless Xbox connections will drop out and i'll have to reboot the router to get it working again. I've tried everything I know of (i.e., Static IP, Port Forwarding) as well as a factory reset, but I continue to have this issue.
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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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May 17, 2012
I have installed 4 of these units in a commercial premises offering free wifi. Since the day they were installed (5Months ago) we had connectivity issues with mobile devices. This was somewhat resolved in the latest FW 1.0.04 but we are still having random disconnections on the units every 2 - 4 days and have to reboot the units. Lately the units have become unresponsive and reset themselves back to factory settings.
What we have done so far:
Changed router models - No change
Changed from Static IPs & DHCP - No change
Turned on isolation - No change
Performed a wifi analysis to pick the best channel for each unit - Slight signal gain but still disconnects
Changed to 20Mhz only (And all other variations) - No change
I think I am left with no option but to return these for some other brand. I'm really regretting buying these units at the minute...
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Jul 24, 2011
I just recently (4 days ago) purchased an E3200 router. I noticed some random disconnects on my devices using the 2.4GHz frequency.I installed inSSIDer from MetaGeek to see what was going on and noticed some strange behavior where the Amplitude on the 2.4GHz randomly drops dramatically. Sometimes its once every 10 minutes, other times it happens 5 times in one minute. I can't figure out what is the cause. The 5GHz signal is steady as a rock.
What I tried so far: Set the Channel to the least crowded channel instead of auto, upgraded the firmware, restarted the router all to no avail. This is annoying to say the least. It doesn't affect anything unless you are playing video games or running a remote desktop session, where a single disconnect is disastrous. I just upgraded from an old linksys wrt54g, tried a netgear n600 which was terrible, then swapped it out for the Cisco E3200..
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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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Aug 23, 2011
At first it seemed to happen everyday at the same time, but now seems completely random (happening twice a day somedays). At some part during the day while the user is busy with this system it drops the network connection. The ONLY way to get it back is by restarting via the reset button. Shutdown or even logoff just hangs. Nothing regarding that card will work or respond, you can not even disable and re-enable. I can however get the wireless to work without restarting. I've done everything I could possible think of including format and re-installing Windows. Something new I've noticed is that the user always has MS Access (in runtime mode) running while network goes down and then you can not end that process.
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Feb 7, 2013
I have been having intermittent wireless trouble. This includes Ping spiking, Wireless network drop-outs (The network stop appearing on available network list) and packet loss. This is all completely random (though very common) and is frustrating to say the least. As far as I know, the problem is not nearly as bad on other devices in the house , so I suspect that my network card has become shoddy. I have tried updating,removing,and re-installing network drivers to no avail. I have also used cmd and I have pinged 192.168.1.254, which shows random ping spikes, and some packet loss as well.
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Jun 20, 2012
My router keeps crashing like it is restarting. it turns off then all the lights are beginning to turn un again after some time it repeats again and again....Last thing they did was turning down the internet speed for our Network. It worked in some time but then it begun crashing again...Then they said it was the cable in the road that could not take all the data stream... And something about and Bit error?I just dont belive the cable in the road thing because our neighbour are running 10 M/bits without a single error anytime... I am not an expert but i've found out that we are running a Sagembox or something like that. The hardware version (if that is important) is: 3DK04-02 Everybody in the house is running Win7 SP.1. If you need any more information then i will try to find them.
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Mar 18, 2011
I am having an issue with 3 xp pc's in my network loosing connectivity to the file server. There are 4 network drives mapped to a win 2k3 server, when the user logs in everything is fine, after a while the network drives become unreachable and gives the following error - An error accrued while reconnecting (drive letter) to \servershare Microsoft windows network: The local device is already in use The connection has not been restarted” This happens from any user on only 3 boxes. The rest of the network is fine. These 3 are networked via a switch, I swapped that out for another hoping that might fix it, but nothing.
The other odd thing is the same time that the network drives error out it seems that DNS stops resolving anything outside my network. I can still ping the router and other pcs on the LAN but DNS fails to resolve any names for IE, and nothing outside the LAN can be pinged, no Google, no 8.8.8.8. How ever restarting fixes the issue for a short while. There have been no network changes and all systems are fully up to date as far as patches go. I was thinking it's got to be a ether a DNS issue (the file server is also the Active Directory Domain controller) or something in to do with the router/fire wall we use (it's a Cisco ASA 5005).
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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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Jul 31, 2012
I have this laptop with a built-in Intel Centrino Advanced-N + Wimax 6250 adapter to connect to WiMAX.Right now I have a WiMAX connection at home with a simple gateway. So what I want to do right now is trying to connect to this network using my built-in adapter.I'm facing right now is that the driver of the adapter only searchs for a certain provider from the US (Clear). I'd like to subscribe to their service but I live in Argentina so that's not a valid option. So my question is if you know of a custom driver or some other way to search for my local wimax network.
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Feb 11, 2013
Wired PC randomly disconnects from network at random intervals each dayoday it has done so 3 times. The only way I have found to get it working again is to reset the router which can be inconvenient. When it disconnects all wireless devices continue to work and I have no issues like this with my wired consolesI switched to using a static IP address, since having an automatic one gave me the same results [i have since switched back to automatic]Be happy for any suggestions on how to sort this. I am using W7 OS and I'm using an Orange router. I don't know if its relevant, but when I go to reset my router I have noticed that the download light on my router is flashing like crazy when my PC has disconnected.
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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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Jul 21, 2011
I have SG200 50/50 Port Switch and the devices that connect into it are servers and workstations
Few days and until we experience network dropouts and when take a look at the switch log it gives me this?
2147483423 2011-Jul-22 16:34:53 Informational %LINK-I-Up: gi3, aggregated (1)
2147483424 2011-Jul-22 16:34:53 Warning %STP-W-PORTSTATUS: gi3: STP status Forwarding, aggregated (1)
2147483425 2011-Jul-22 16:34:50 Warning %LINK-W-Down: gi3, aggregated (1)
2147483426 2011-Jul-22 16:34:37 Informational %LINK-I-Up: gi3
2147483427 2011-Jul-22 16:34:37 Warning %STP-W-PORTSTATUS: gi3: STP status Forwarding
2147483428 2011-Jul-22 16:34:27 Warning %LINK-W-Down: gi3
Device connected to gi3 is a Web Server
This is also happening on more ports ie 20-printer, 13-Cisco Wireless Access Point, 24 File Server etc., which I don't know what is going on. With my research, it said something about spanning protocol. Is this possible to disabled?
The other cisco switch where desktop are also connected doesn't have this error.
My firmware is 1.1.0.73
Boot Version 1.0.0.1
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Jul 1, 2011
I just built a new computer running Windows 7 with an Intel 82579V Gigabit on the motherboard. Since last night while playing an online game, I have occasionally noticed sudden network failures where I either time out of my game or severely lag for 10 seconds before the game catches up.
My other network hardware and setup remains unchanged during this build.I have never had issues with my internet connectivity from my ISP.
The problem is not consistent and I'm not sure how to repeat it. I was playing my online game for several hours and then suddenly started having problems every 5 minutes with disconnecting.I can watch the network utilization in the Windows Task manager drop suddenly and then spike back when I reconnect to the game. Similar visual seen on the Tomato software on my router.
So far I've grabbed the latest drivers for the network chip from my motherboard manufacturer's website and turned off Teredo. I also made sure no power saving features were enabled on the network chip in the device manager.
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Apr 15, 2012
The problems looks like this: I'm able to browse the web without any problems until at random points of time - might be 2 hours after I turn on my PC or 5 or even half an hour the port 80 gets blocked - actually more like it hangs it self. As whatever I try to open i get "waiting for response" going and going. It's not even returning "page not found" error or anything. To top everything all other ports work fine - i can use https, ping run tracert - no problem there.
I've spend two days looking for some answer on the web but came up empty. I've scanned for malicious software with ad-awar and malwarebyte anit-malware - nothing came up. After restart of the pc everything comes back to normal but its frustrating needing to do that every now and then.
My home network looks like this: I have some broadband modem that is connected to local wifi TP-LINK router (Model No. TL-WR340G/TL-WR340GD). There are four devices using this connection - two pc's (laptops), android phone and android tablet.
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May 17, 2012
I have a Lenovo T420 with a Intel Centrino Advanced-N 6205 wireless network card that causes me some headache. It randomly gets disconnected from my router (Zyxel P-2601HN-F1) and home network, works fine though if i using cable. Right after it gets disconnected it reconnects and works fine until it gets disconnected again. I have an HP laptop connected at the same time and no problems there.It works fine in the network in our office (work laptop). I tried our IT dept but they were clueless and told me I had to figure it out by myself, as it works in the office..
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Nov 29, 2012
I have a Vista 32bit desktop computer which keeps dropping internet connection. It is ok for a day, maybe two, but then all connection has gone.
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Dec 11, 2011
So my sister moved the router to a room which we did not realize had a broken phone jack. we moved it back to the place it has always been. However,the desktop in my room has been dropping connection while the other laptops are working fine.The first problem was being unable to load any pages at all.If I left it there, it would stay connected.Open up firefox and try to surf, my wireless network will disconnect.I unplugged and replugged the router to see if it fixed it.I can now surf a bit but my ms is always around 300-500 ms.Seeing as how replugging the router worked,I tried again.I can connect to some pages with a ping of 10-25 ms. However, any game installed on the desktop when running will either disconnect me or cause extreme lag.This has only started to happen after the router was moved.
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Aug 1, 2012
I have noticed a few times over the last month that my PC would not load pages due to connection problems. If I hover over the Network icon, it say that I am not joined to a network but within minutes, it reconnects itself. I use http://www.scan.co.uk/products/zyxel-pla-4201-500mbps-mini-powerline-adaptor-twin-pack power adapters and they "appear" to work well with good speeds as I download and game online alot. I have noticed that today the problem is really bad. It loses its connection every 5 or 10 minutes and then reconnects itself as if nothing has happened. I tried using my iphone on the wireless and it also seemed to have dropped out on connection. I have tried resetting my router too but with no joy
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Jan 12, 2012
We run windows server foundation 2008 and have about 15 workstations. I had been running the network on 10 workstations prior to moving the server to our new location about a month ago. All was working well. We had run with the 15 workstations no problem in our new facility for several weeks. many of the computers are dropping the network connection now intermittently, with no predictable pattern. I can't seem to reproduce the conditions that cause the drops.
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Mar 17, 2012
I'm looking to improve my connectivity,as the internet drops out a few times a day.Let me explain - I hope I'm correct in my assumptions.Every few hours, my PS3 will have a DNS error, and upon checking my iPhone, I notice that it's switched from wifi over to 3G and there seems to be a loss of connection. I cannot reconnect to the internet until I've restarted my router, or 'forgotten' and rejoined the network.
Additionally, we have an Apple TV, and connection drops out about 3 or 4 times every hour, which is very frustrating when trying to watch a movie.
[code]...
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Apr 30, 2013
My internet connection has been dropping intermittently over the past week or so.This all seems to have started when my brother called Verizon because his laptop would not connect. He restored his laptop and he was having issues connecting. They changed something to allow him to connect.
The model of the modem/router is GT78WNV
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Jan 15, 2011
I have two different friends that are having problems with their printers which are connected to their home network. One has an Lexmark printer wired to their router and running Windows Vista on a laptop. The other has an HP printer connected to the network wirelessly and the laptop is running Windows 7.
In both cases, they are setup to use DHCP. When first setup and the printer software was installed, everything worked fine. Now they each get a message showing 'offline' when they try to print. I went to each of their houses, downloaded and installed the latest printer software and they were printing again. After a short time, the same problem surfaces.
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