IPv6 Dropping Frequently Causing Disconnects

I have got a DPC3939 Modem/Router combo. I get frequent disconnects from my Xbox and on my computer. I'll document the exact minute it happened and check the logs on my router. Sure enough there's a log at that exact minute, every single time I drop connection. Here's what I get. And I tried disabling both IPv4 and IPv6 firewalls entirely and it makes no difference. FW.IPv6 FORWARD drop, 348 Attempts.2015/8/01 00:22:20Firewall BlockedFW.IPv6 INPUT drop, 63 Attempts.2015/8/01 00:22:20Firewall Blocked Let me know if you know how I can fix this issue. Thanks!

Not all routers and modems work well with Windows 7/Vista.
See if there is firmware for your network equipment.
Upgrade to Win7, much better WiFi and networking.

Similar Messages

Socket connection seems to drop frequently caused by DGCClient

Hello,
I am using RMI with SSL, but I recognize that calling remote methods often takes long time. I have investigated, that the the
createSocket function in my RMISSLClientSocketFactory is called very often and createSocket takes around 3 seconds because I am using SSL with a big key, but this is another story..
Sometimes after more or less 20 seconds the createSocket function is called by the framework, but I don't want to create new sockets very frequently.
In the stack trace I can see the following:
System Thread [RMI RenewClean-[192.168.1.60:2022,ApplicationRMISSLClientSocketFactory@ecb67f]] (Suspended (breakpoint at line 47 in ApplicationRMISSLClientSocketFactory))
ApplicationRMISSLClientSocketFactory.createSocket(String, int) line: 47
TCPEndpoint.newSocket() line: not available
TCPChannel.createConnection() line: not available
TCPChannel.newConnection() line: not available
UnicastRef.newCall(RemoteObject, Operation[], int, long) line: not available
DGCImpl_Stub.dirty(ObjID[], long, Lease) line: not available
DGCClient$EndpointEntry.makeDirtyCall(Set, long) line: not available
DGCClient$EndpointEntry.access$1600(DGCClient$EndpointEntry, Set, long) line: not available
DGCClient$EndpointEntry$RenewCleanThread.run() line: not available
Thread.run() line: not available
The DGCClient seems to be responsible for new socket creation. Is it possible to disable the DGC (distributed garbage collector), or to avoid that a new socket is created?
Addional info: if I start my client and server without making any traffic, a new socket is created exactly every 5 minutes.
thanks in advance,
Armin
www.lyth.de

createSocket function in my RMISSLClientSocketFactory is called very oftenIt shouldn't be. Does your RMISSLClientSocetFactory have an equals() method? It should read like this:
public boolean equals(Object that)
return that != null&& this.getClass() == that.getClass();
}If you're using 1.5 or later you don't even need your own RMISSLClientSocketFactory: see javax.rmi.ssl.*.

Frequent internet disconnects for over a year

I have been suffering frequent disconnects from the internet for over a year. Each disconnect lasts for up to two minutes, rarely longer. Sometimes the disconnects have been as frequent as thirty or more times per hour. Sometimes I have no problems for many days.
I'm using HH5 and have Infinity 2 with a typical speed of circa 60mbps. Speed isn't an issue but the frequent disconnects are a pain. BT Broadband support have been unable to see the disconnects happening. As far as they are concerned, the line is fine.
If the disconnect happens when I'm using Google Chrome, I get a status message "Resolving Host" in the bottom left and, after a short delay, a screen appears saying "This webpage is not available. DNS Probe Finished. No Internet." Other devices, including BTTV, either give a message to the effect that there is no internet connection or just "hang". As far as I can tell, all devices, whether wired or wireless, 2.4GHz or 5GHz,, disconnect simultaneously.
I have tried disconnecting every device from the hub except the BTTV and the disconnects still happen.
BT have checked the line countless times, sent an engineer to my house, replaced my home hub three times, I have replaced all cables, replaced the phone/broadband socket, done countless resets etc all to no avail. The HH5 lights don't change colour when the internet connection drops.
After checking the BTCare Community Forums and discovering the event log in the HH5 I discovered that, when the disconnects occur, an "IN: BLOCK [16]..." message appears in the event log for the Firewall of the hub. At the end of this message I have copied a 12 hour firewall event log from today. Every "IN: BLOCK [16]..." event seems to coincide with an internet disconnect so that amounts to circa 40 disconnects in the past 12 hours.
What are these "IN: BLOCK [16]..." messages and why does my internet connection drop every time one of these messages appears? I checked the IP addresses for some of these "IN: BLOCK [16]..." messages. The first IP address in each message I checked was in China. The second IP address for each event I checked is BT in Boston, UK. My suspicion is that the BT server is logging me out every time one of these "IN: BLOCK [16]" events occurs. Logging back into the server then takes up to two minutes and, in the meantime, I have no internet connection.
BT Broadband support in India say that there is nothing they can do to address these internet dropout issues. They can only deal with line or hub faults. Their only suggestion was to disable the firewall on my HH5 but, given all these potential attacks from Chinese IP addresses, I refused to do this.
BTW, the HH5 IP address ending in 65 is my BTTV box.
I'd be grateful for any help and advice to resolve this issue. Here is the Firewall event log;
20:44:07, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.131]:46973->[86.182.86.9]:22 on ppp3)
20:35:11, 18 May. IN: BLOCK [16] Remote administration (TCP [119.82.226.82]:50172->[86.182.86.9]:443 on ppp3)
20:05:44, 18 May. IN: BLOCK [16] Remote administration (TCP [37.247.36.123]:12152->[86.182.86.9]:443 on ppp3)
19:27:54, 18 May. IN: BLOCK [16] Remote administration (TCP [115.239.248.2]:6000->[86.182.86.9]:8080 on ppp3)
19:07:56, 18 May. IN: BLOCK [16] Remote administration (TCP [121.88.5.177]:8888->[86.182.86.9]:22 on ppp3)
19:01:12, 18 May. IN: BLOCK [16] Remote administration (TCP [80.82.78.186]:39434->[86.182.86.9]:80 on ppp3)
18:51:30, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.133]:45824->[86.182.86.9]:22 on ppp3)
18:41:46, 18 May. IN: BLOCK [16] Remote administration (TCP [183.136.216.3]:9090->[86.182.86.9]:22 on ppp3)
18:40:30, 18 May. IN: BLOCK [16] Remote administration (TCP [117.21.225.3]:10708->[86.182.86.9]:22 on ppp3)
18:27:50, 18 May. BLOCKED 1 more packets (because of Remote administration)
18:27:50, 18 May. IN: BLOCK [16] Remote administration (TCP [37.247.49.253]:35420->[86.182.86.9]:80 on ppp3)
18:22:25, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.46 on ppp3)
18:22:22, 18 May. BLOCKED 2 more packets (because of ICMP replay)
18:22:22, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.46 on ppp3)
18:09:52, 18 May. IN: BLOCK [16] Remote administration (TCP [39.115.40.60]:44439->[86.182.86.9]:80 on ppp3)
17:31:58, 18 May. IN: BLOCK [16] Remote administration (TCP [61.240.144.65]:60000->[86.182.86.9]:161 on ppp3)
17:30:18, 18 May. IN: BLOCK [16] Remote administration (TCP [198.20.69.74]:20012->[86.182.86.9]:443 on ppp3)
17:25:05, 18 May. IN: BLOCK [16] Remote administration (TCP [185.35.62.13]:60643->[86.182.86.9]:80 on ppp3)
17:22:10, 18 May. IN: BLOCK [16] Remote administration (TCP [61.160.224.129]:56517->[86.182.86.9]:8080 on ppp3)
17:00:08, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.131]:50338->[86.182.86.9]:22 on ppp3)
16:49:05, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.36 on ppp3)
16:49:03, 18 May. BLOCKED 3 more packets (because of ICMP replay)
16:49:02, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.36 on ppp3)
16:37:49, 18 May. IN: BLOCK [16] Remote administration (TCP [218.77.79.43]:43469->[86.182.86.9]:22 on ppp3)
15:54:37, 18 May. IN: BLOCK [16] Remote administration (TCP [71.6.216.62]:443->[86.182.86.9]:443 on ppp3)
15:43:28, 18 May. IN: BLOCK [16] Remote administration (TCP [221.235.189.245]:38235->[86.182.86.9]:22 on ppp3)
15:31:23, 18 May. IN: BLOCK [16] Remote administration (TCP [183.136.216.4]:9090->[86.182.86.9]:22 on ppp3)
14:39:50, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.133]:49483->[86.182.86.9]:22 on ppp3)
14:37:40, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.74 on ppp3)
14:37:36, 18 May. BLOCKED 2 more packets (because of ICMP replay)
14:37:36, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.74 on ppp3)
14:03:46, 18 May. IN: BLOCK [16] Remote administration (TCP [183.136.216.3]:9090->[86.182.86.9]:22 on ppp3)
14:00:11, 18 May. IN: BLOCK [16] Remote administration (TCP [82.102.180.11]:10469->[86.182.86.9]:22 on ppp3)
13:57:17, 18 May. IN: BLOCK [16] Remote administration (TCP [82.221.47.5]:48212->[86.182.86.9]:22 on ppp3)
13:49:16, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.135]:59887->[86.182.86.9]:22 on ppp3)
13:43:33, 18 May. IN: BLOCK [16] Remote administration (ICMP type 8 code 0 198.20.99.130->86.182.86.9 on ppp3)
13:08:25, 18 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP [192.168.1.65]:7457 <--> [86.182.86.9]:1024 - - - [91.235.132.236]:443 SYN_SENT/SYN_RECV ppp3 NAPT)
13:08:25, 18 May. IN: ACCEPT [54] Connection opened (Port Forwarding: TCP [192.168.1.65]:7457 <--> [86.182.86.9]:1024 - - - [91.235.132.236]:443 SYN_SENT/SYN_RECV ppp3 NAPT)
13:02:30, 18 May. IN: BLOCK [16] Remote administration (TCP [221.235.189.245]:58370->[86.182.86.9]:22 on ppp3)
12:55:09, 18 May. IN: BLOCK [16] Remote administration (ICMP type 8 code 0 178.124.19.8->86.182.86.9 on ppp3)
12:07:45, 18 May. IN: BLOCK [16] Remote administration (TCP [104.233.142.242]:6000->[86.182.86.9]:8080 on ppp3)
11:58:49, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.131]:54076->[86.182.86.9]:22 on ppp3)
11:26:03, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->31.55.184.239 on ppp3)
11:23:14, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.132]:37275->[86.182.86.9]:22 on ppp3)
11:07:40, 18 May. BLOCKED 3 more packets (because of ICMP replay)
11:07:40, 18 May. OUT: BLOCK [7] ICMP replay (ICMP type 3 code 1 86.182.86.9->216.58.208.46 on ppp3)
10:39:08, 18 May. IN: ACCEPT [57] Connection closed (Port Forwarding: TCP [192.168.1.65]:7457 <--> [86.182.86.9]:1024 - - - [23.62.53.9]:443 SYN_SENT/SYN_RECV ppp3 NAPT)
10:39:08, 18 May. IN: ACCEPT [54] Connection opened (Port Forwarding: TCP [192.168.1.65]:7457 <--> [86.182.86.9]:1024 - - - [23.62.53.9]:443 SYN_SENT/SYN_RECV ppp3 NAPT)
10:17:56, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.132]:54983->[86.182.86.9]:22 on ppp3)
09:29:53, 18 May. IN: BLOCK [16] Remote administration (TCP [61.240.144.64]:60000->[86.182.86.9]:443 on ppp3)
09:25:48, 18 May. IN: BLOCK [16] Remote administration (TCP [183.136.216.3]:9090->[86.182.86.9]:22 on ppp3)
09:25:21, 18 May. IN: BLOCK [16] Remote administration (TCP [196.12.153.45]:42739->[86.182.86.9]:22 on ppp3)
09:25:15, 18 May. IN: BLOCK [16] Remote administration (TCP [43.255.188.130]:36950->[86.182.86.9]:22 on ppp3)
08:58:58, 18 May. IN: BLOCK [16] Remote administration (TCP [222.186.56.178]:28384->[86.182.86.9]:22 on ppp3)
08:37:28, 18 May. IN: BLOCK [16] Remote administration (TCP [118.244.130.34]:6000->[86.182.86.9]:22 on ppp3)
08:17:59, 18 May. IN: BLOCK [16] Remote administration (TCP [222.186.31.208]:6000->[86.182.86.9]:22 on ppp3)
08:12:22, 18 May. IN: BLOCK [16] Remote administration (TCP [141.212.122.151]:45461->[86.182.86.9]:22 on ppp3)
08:02:56, 18 May. IN: BLOCK [16] Remote administration (TCP [218.77.79.43]:35046->[86.182.86.9]:8080 on ppp3)

Ectophile - thank you for your reply. I tried the quiet line test and the line sounds good. There's no crackle or static. Just a very faint hiss if I turn the volume on my handset up full.
I've had three replacement hubs in the last year or so and they have made no difference to the frequency of the internet drop-outs.
The only fault that has been detected in all of this time was back in January when BTTV 2nd line support in the UK establish a link with my PC and monitored the connection. (They had a lot of difficulty establishing this connection and they were convinced I had no internet connection even though I did at that point). As a result of this monitoring and other testing, they diagnosed a very brief, intermittent drop out in the fibre-optic link between the surface box and the exchange. The 2nd line support engineer commented that this was a very strange fault because the fibre-optic connection normally either works or it doesn't.
He called out a BT engineer to investigate the fibre fault. This engineer told me that he had "reset" the fibre-optic link at the surface box. Having done this, he couldn't find a fault so visited my house, undertook line checks, replaced my HH4 with a HH5, checked out all wiring, tested the socket etc monitored for 20 minutes, couldn't find any further fault and left. The problems have continued however and BT India support just keep running their standard line tests and finding no fault.
I tried running a repeating ping test today using a tool called “WinPing”. I was using my BT email server for the ping test. The ping was set to 1 second intervals with the time-out set to a high level of 3000ms. I wasn’t using the internet at the time so I have no idea whether there is any correlation between the "timed-out" and/or slow response pings and the internet drop-outs that I have been suffering.
The eight and a half hour test gave an average ping time of 45ms but there was a lot of variability;
101 pings "timed-out" without a response (>3000ms).
6 pings were between 2000ms and 2999
23 pings were between >1500ms and 1999ms
87 pings were between 1000ms and 1499ms
139 pings were between 500ms and 999ms
66 pings were between 250ms and 499ms
428 pings were between 50ms and 249ms
680 pings were between 40ms and 49ms
12,296 pings were between 32ms and 39ms
There were no periods of more than a few seconds where WinPing couldn’t ping the server so this test doesn’t explain why I get the frequent drop-outs of up to 2 minutes unless perhaps the problem is caused by short drop-outs causing my connection to reset? The message I get on my Laptop / Google Chrome when the internet connection drops-out is a “Resolving Host” message at the bottom left and, after a short delay, a screen appears saying "This webpage is not available. DNS Probe Finished. No Internet." Other devices come back with various message to the effect that there is no internet connection, even though the HH5 light remains blue.
Do the ping test results indicate any particular issue or are these results normal?

My connection drops frequently; started happening recently.

My connection drops frequently; started happening recently. Don't know why. The green light does not go off nor does my computer say I am not connected, but web pages do not load, and either takes a restart, or 5 minutes of waiting.

I'm having the exact same problem - I have an Extreme 4th Gen and the networked harddisk (my fileserver) keeps dropping off and getting disconnected...really very annoying!
Airport Update 7.6 seems to be the culprit - I backed it down to 7.5.2 and it stopped disconnecting but the incessant update notifications (pop-up Airport dialog, blinking green light on the device) and concerns about security moved me back to 7.6.
I wish Apple do something about this.

Frequent PPP disconnects

New to this forum, apologies if this is an old topic...
I have a Netgear DGND3300 router, only one month old, which currently syncs at around 20Mb/s (WBC/ ADSL2+ service) downstream, <1Mb/s upstream (we are about 1km from exchange). Our previous Netgear DG834G ran faultlessly for months at a time, until the DSL circuitry finally failed.
Periodically, the service becomes unstable, with frequent PPP disconnects. I have to reset the PPP session manually, to restore Internet connection. I've noticed that our downstream noise margin falls as low as 2-3dB under these circumstances, whereas in normal operation it's closer to 6dB. After contacting the BB help desk, the noise margin usually comes back up, to around 5-6dB, and the connection seems stable again for a while, but then eventually a repeat of the same behaviour. The upstream noise margin is closer to 12dB, typical figures below.
I've tried connecting a BT Home Hub 3, connecting directly to the test socket, changing DSL filters etc, but those noise figures are pretty consistent. I haven't left the HH3 connected for any length of time, so I don't know if it's likely to be more stable. (And I prefer Netgear.)
Is this normal behaviour? Does DLM try continuously to reduce the noise margin, until the line becomes unstable again? What should I do, to avoid help desk calls?
System Up Time 930:19:35
Port
Status
TxPkts
RxPkts
Collisions
Tx B/s
Rx B/s
Up Time
WAN
PPPoA
443669
503818
0
466
4593
24:58:03
LAN
10M/100M
18201765
9458182
0
902
432
930:19:31
WLAN
11M/54M/300M
0
0
0
0
0
929:09:20
ADSL Link
Downstream
Upstream
Connection Speed
19690 kbps
888 kbps
Line Attenuation
16.5 db
5.7 db
Noise Margin
5.3 db
12.5 db
TIA, Martin
Solved!
Go to Solution.

bt have been trialling a lower 3 dB noise margin on stable lines so to see the nose margin drop is now quite normal
as to PPP drop this does happen occasionally I have had it happen my self and normally after a week or two it stops as soon as it started
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WAG120N - Frequent Internet Disconnection Issue

I have bought a Linksys WAG120N few days back & after i got it , i also updated it to the newest firmware from the Linksys site.The Firmware version for my product is , 1.00.12 Annex A.
But i am getting a frequent internet disconnection after installing the Router/Modem.I am not a newbie in this.I have done my CCNP with full marks & currently working in IBM India & i have enough knowledge on how to configure Routers.
I have done the Flashing in the correct process & after Flashing , i did a 30-30-30 Reset as explained in this forum somewhere but the issue is still existing.
I am listing below what i have done so far. :-
1) After getting the Router , i have updated to the newest firmware & Hard-Resetted the Router as explained in this forum.
2) Then i configured the modem with the values from my ISP.I have done it both manually & also tried the Linksys Setup wizard that came on the CD with the Product and the SETUP WIZARD HAS MY ISP ON THE LIST as well.
3) I got the net connected after configuring but only for some time.After that , i am constantly getting disconnected from the Internet no matter what if i use the Wired or the Wireless devices to access the Internet.I tried setting the Router with both wireless Security enabled & disabled.No luck in either cases.Almost all of the time i get a disconnection when the DSL Link is Steady on the WAG120N.So, this should not be a Line problem.Also i can access the Net with my ISP provided Modem.No problems at all.
4) I tried uninstalling the Anti-Virus & the Internet Security program i use which is Symantec Norton Internet Security 2010.No luck.
5) I have Formatted & did a Clean Install of Windows 7 X64 & Windows XP SP3 & tried running the Router on a freshly installed operating system with no other software installed.I tried different Machines , Different Operating Systems , Different Lan Ports.No luck.
6) I deactivated Windows default Firewall & every Power Saving functions of my OS.No luck.
7) Linksys suggested me to visit the Service Center & get a replacement.I did visit the Linksys Authorized Service Center & got a new WAG120N & brought that to my home.I had to pay around 20 USD Taxi Fare as the Service Center is at the remotest part of my city.I wish if Linksys had a Pick-Up & Drop facility which nearly every big companies offer in my place.
8) The new WAG120N did not change anything.The disconnection issue is still existing.
9) There is absolutely NO problem in my ADSL line.I am using a 512kbps ADSL connection & when i use the CHEAPEST Wi-Fi ADSL Modem which has been given by my ISP , i can access Internet just fine , no problems at all either in Wired or the Wireless.So, in this case The Linksys ADSL Router is at fault.
10) I can see the ADSL line Stats with my 20 USD worth of Huawei ( ISP provided ) Modem but the 150 USD worth of Cisco/Linksys WAG120N does not support showing the ADSL Line stats ( or at least the Firmware doesn't support it ) which is unbelievable for a company of caliber like Cisco.
The two most important things every Modem at least should display are :-
1 ) SNR Margin
2 ) Attenuation
These two are absolutely a Must-Have features if you want to see how good your ADSL connection is & i am surprised to see that my cheapest ISP modem does have these but a Cisco product does not. !!!!!!!!
I have called the Linksys support again & they told me that they are Escalating my case to their 2nd Level.
I got a response from their Level 2 Support Person & he asked me to provide information about my case & i had sent him a reply 2 days ago but no reply from him.
And I am NOT the only person with this problem.I do not know Linksys knows this or not but there are several Linksys users who are using this model & are facing the exact same issues as me.
Here are some of them & they have been posted on this community itself :-
1) http://homecommunity.cisco.com/t5/Cable-and-DSL/Wag120n-problem/td-p/300397
2) http://homecommunity.cisco.com/t5/Cable-and-DSL/WAG120N-keeps-disconnected-from-internet/m-p/330870/...
Tell me Sir , what should i do ? Should i sell it & get another brand or Linksys is going to help me to resolve the problem ? I am extremely sorry to say that i feel regretted that i invested my hard earned money into this which just does not want to work at all.I am too much frustrated & not going to buy any Cisco product if my problem does not get solved because i can not bother the disconnection problem as i need to stay connected all the time for my job & also for my personal reasons.It is a shame that i had to pack my Linksys up on the shelves & have to use the cheapest quality Chinese ( No offense ) Modem because at least the connection does not drop here & I can use it for what it is meant to be.
I will be expecting a quick reply from you people & would also hope that you will be able to solve the problem.Also i think the problem is not the Router but the Firmware itself is faulty but i am not sure about that because this is my first Cisco product & frankly speaking I am very much disappointed with it.I would very much like to experience a Cisco product because i thought it is an World Class product in the business.So, please help me resolve this problem.Either Linksys should help me resolve the problem and get me an working product or i would want to get my money back.Thank You.
(Mod note: Edited for guideline compliance.)

Yes but I think Linksys should give me another one which is working right ? Why should i invest in another Router as i just bought it & its already too pricey here.
I need an ADSL Wi-Fi Modem Router & there is only three models avilable here.One is this one which i'm using , WAG120N & the other two are WAG160N & WAG320N & both of them costs more than triple than that of WAG120N.And no one is going to give me a replacement here.I can get the replacement but the same Router.I can not upgrade it without having to buy a whole new router which costs thrice than my current one.
So, i would be highly oblized if Linksys can give me a replacement because only they can replace it with another model but Linksys India customer Care is only suggesting me that they can issue a replacement for the same model & can not give any other model.
I sent my concern to the 2nd Level Technicians but have not received any reply.Feeling helpless at the moment.
My posts are edited & most important parts are being deleted.Please do not edit my post.All i am wanting to get a suggestion for my problem.I do not want to bother you with my problems but the communities are meant mainly for that purpose so that we can help & support each other.
Thank you.

After installing Mountain Lion on my MBP Retina, WiFi connection drops frequently (not happening to other devices around); it also takes a lot to reconnect after wake up.

After installing Mountain Lion on my MBP Retina, the WiFi connection drops frequently (not happening to other devices around, like on an iPhone); it also takes a lot to reconnect after wake up. Does anybody have a solution for this?

After installing Mountain Lion on my MBP Retina, the WiFi connection drops frequently (not happening to other devices around, like on an iPhone); it also takes a lot to reconnect after wake up. Does anybody have a solution for this?

HT4628 My Wi-Fi connection on my iMac drops frequently. The other computers in the house do not have this problem. If I go into the Network Preferences and choose my Network it connects immediately but it does not remember the setting.

My Wi-Fi connection on my iMac drops frequently. The other computers in the house do not have this problem. If I go into the Network Preferences and choose my Network it connects immediately but it does not remember the setting and I must reselect my network frequently.

The iMac picks up a wireless signal from the back of the screen, so you would want to avoid having it close to a wall, or in a confined area where the wireless signal cannot easily reach the iMac's antenna.
We don't know how far the iMac is from your wireless router, or how many walls or other obstructions might be in the signal path that would limit the quality of signal that the iMac receives.
Nor do we know whether you might have a cordless phone near the iMac, or whether you may be using a wireless keyboard and/or mouse....all of which can interfere with the wireless signal.
Can you provide some more info on this?

Internet sessions, VPN session, and connections dropping frequently

I'm in an apartment. This problem started about a week ago. All of my browser sessions, vpn session, and connections such as AIM or netflix drop frequently. I often have to click links twice to get a page to load. I have to reload videos a lot to get them to continue to stream. I am constantly signing in and out of AOL IM.
I believe the problem has to do with several MoCs (coax connections) listed on my router page, and these MoCs have names of other people on them. Until I noticed them a week ago, I had only seen one MoC belonging to me listed on the router connection page.
Thus, I think that something got crossed up of misconfigured in the ONT for my apartment complex. The gateway light on my router stays green as all of these problems happen.
Pinging google.com, I get
--- google.com ping statistics ---76 packets transmitted, 55 packets received, 27.6% packet lossround-trip min/avg/max/stddev = 31.282/39.339/48.217/3.548 ms
Anyone seen this before and know how to get verizon to fix this?
I have had nothing but problems with FIOS since getting it, and I have wasted a lot of time with their "customer support."

I am sorry to hear about your connection problems. I have sent you a private message so we can get your information and look more deep into your connection.
Anthony_VZ
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Informatica services dropping frequently on linux

Hi all,
I've installed Informatica 9.0.1 version recently on my linux machine and it worked for couple of days. Now I've rebooted my linux server but my informatica services are dropping frequently. So my infa adminconsole is not working now.
Can you please me to get resolve this issue?
Regards,
Ram

Hi,
I would suggest you to go thru the logs , however there are chances that there are some other software updates that happened on this box. There might be a chance that Java got updated and as Informatica is completely SOA based it is not supporting this Version..... we can help you more if you post you log here
Regards,

Vista Ultimate WiFi dropping frequently and causing BSODs

Hey guys, I have vista Ultimate SP1 installed on my iMac via bootcamp, when I am not using the network heavily,the network will disconnect every hour, when I try to copy files from time capsule, it drops out every 5-10 minutes, this really isn't helpful when I'm trying to transfer 30+ gigs of data, as I keep having to restart it Also I get the odd BSOD which I think relates to this.
All help is appreciated, thanks

Not all routers and modems work well with Windows 7/Vista.
See if there is firmware for your network equipment.
Upgrade to Win7, much better WiFi and networking.

DeskJet F4580 frequent wireless disconnects

I am having a problem whereby the F4580 will simply stop responding to network traffic after an hour or so of not being used.
There are no settings in the EWS to change this behaviour, and the only way i can resolve it is to power cycle the printer
So far i have tried the following:
Disabled IPV6 on router (Buffalo WZR-HP-G300NH) and PC (Win7 64-Bit)
Assigned static IP (from outside of DHCP range)
Disabled all firewalls
Forwarded all ports mentioned on this post
Installed printer using USB cable, Ethernet and WPS
Set wireless network to no encryption (also tried WEP and WPA)
Even tried an old Netgear router that i had knocking around thinking the Buffalo was somehow incompatible but still had the same problem
Strange thing is, when the printer gets disconnected (normally after an hour of non-use) the Network Configuration page still shows the static IP i have assigned to it (192.168.11.20) the blue wireless light stays solid (as in "Connected") but the client monitor on my router has no mention of the printer or it's MAC address.
During this time i also cannot ping the printer from any PC on my LAN. However after a power cycle it magically starts working.
This seems to me like a problem with the wireless NIC on the printer itself. Is there any way to prevent it from entering sleep mode?
New firmware?
The only thing i can find on the HP support pages are the basic and full versions of the (utterly horrible) printer driver, and a useless "Network Diagnostic Utility".
I cannot accept HP's "fix" of power cycling the printer. What is the point of buying a wireless printer if i have to reboot it every time i want to print something?!
Any help would be greaty appreciated
Kenny Dee
This question was solved.
View Solution.

Sorry, i've not had any time to look into this further, but to answer some of your questions....
1. Did the printer ever have a standard DCHP IP address? Did it exhibit this behavior then?
I have tried it with both DHCP and static IP's - both had the same problem....to be honest it felt like the issue was slightly worse when using DHCP but i'm not 100% sure - DHCP could have been causing it's own problems so who knows!
2. Does it take an hour of inactivity for it to disappear? The printer goes to sleep in just about 5 minutes.
Not exactly an hour....it can be anything from 20 mins to an hour
3. Can you tell me about any non-default settings on your router(s)? DHCP lease times, WPA refresh times, etc.?
Latest Buffalo firmware with mostly defaults.
DHCP lease is 7 days
WPA group key refresh is 1 hour (could that be related....?! ) I will try changing this and see if the disconnect timing changes also...
4. Have you made any adjustments to the defaults of the printer using the EWS?
Other than the static IP, I haven't changed anything in the EWS (there's not much in there anyway!)
Lastly, I haven't tried scanning when it disconnects, but i will get you an answer for that and question 6 when i get a spare moment.
Thanks
Kenny Dee

Calls Constantly Drop Then Recall (Disconnects the...

Its only with skype. When I'm on the internet (like Mozzila Firefox or playing an online video game) its fine, but im having problems with skype calls. They keep dropping in mid sentence and then do the disconnecting sound then wait a few seconds then rejoins the call. I have no idea whats going on or why its happening.
I have skype for windows 8 desktop

I'm experiencing exactly the same problem with my Sony Laptop (AW31XY-Q) running Windows 8 using the Desktop Version 6.5 I believe and in general have no other programs including Outlook 2013 or I.E. 10 running at the same time as Skype. We only use voice communication and do not use the Video application when using Skype.
I’ve amended the details as suggested in your other posts with the exception of changing “any port between 1024 and 65535” and yet the problem persists in dropping my call and as I’m in Bahrain trying to talk to my wife in the UK this is now becoming a joke especially as I’ve paid for the World subscription for the third year running.
My wife has now changed to the “Skype for Windows App” on our brand new Sony all-in one PC as of last night and it seems as if she’s got no further problems apart from my apparently showing as having dropped off-line.
Both units have Norton 360 Premier Edition as the main Anti-Virus program, Firewall etc which we’ve been using for three or four years without any difficulties whatsoever in relation to Skype.
An obvious question arises in that is there a major flaw in the Skype Desktop Application which is causing so many problems for a variety of people reporting the same issue?
I look forward to receiving your opinion in how to resolve this issue.

WRT310nv2 Network Drops Frequently

I'm using the WRT310nv2 router with the latest firmware and I am connected wirelessly. The network adapter is a Dlink DWA-552 installed in a Windows 7 Pro 64bit desktop pc, also with the most up to date drivers and OS.
The Wireless network for the past 5 or 6 days has been down rather frequently. I'm lucky if I can get 20 minutes of use before it boots me off the network. I've tried resetting the router and reinstalling the firmware, but no luck.
At first I thought it might be the adapter itself, but I've ruled that out when I noticed all devices connected wirelessly (two other machines, both with different intel wireless chipsets) were also getting disconnected. Range isn't an issue either as while one machine is one floor above the router, the other two were in the same room. I tried dropping the MTU but still no luck. The encryption on the signal is WPA-2.
If anyone has any suggestions on what I could do., it would be most appreciated.
Thanks.
*note* Only wireless connectivity is dropped. The computer that is wired remains connected to the internet.
Message Edited by Tenly Rodrigues on 03-10-2010 06:57 PM
Message Edited by Tenly Rodrigues on 03-10-2010 06:58 PM
tenlyappan

As you upgraded the router,Reset the router and re-configure the router from scratch.
Also,On the router setup page,Under the Wireless tab..Click on the subtab Advance Wireless Settings...Change the Beacon Interval to 50,Change the Fragmentation Threshold to 2304,Change the RTS Threshold to 2304 and Click on Save Settings...
Now see if you can locate your Wireless Network and attempt to connect...
Power Cycle the router and check...

Frequent WLan disconnections on Equium M40X-230

My laptop suffers frequent disconnections from the internet and it is getting very annoying. Situation is the laptop connects wirelessly to the net via a Belkin router. The router is working ok, and I use Aol for ISP.
Our second laptop, also a Toshiba but a Sattelite A30-203 does not suffer the problems despite using the same router.
Both laptops have service pack 2 on and the M40 is mobile centrino whilst the Sattelite has a wireless adaptor card installed (also Belkin).
If I watch the connection speed it varies between 54mbps and 1mbps and still says that the signal strength is excellent no matter what the speed is.Does this mean the problem lies with the laptop or its settings, or does it need chipset drivers to be upgraded?
Any help would be appreciated as the slow performance especially when loading pages on the net is driving me daft.

Hi
You should know that there are different WLan standards which supports different properties.
The standards are 802.11 A, B or G. At this time the wireless 802.11 G standard supports the fastest connection.
The best combination is the using of the router and Wlan card which supports the same standard.
You have suggested that the Satellite A30 uses the Belkin WLan adapter. I assume there is the best compatibility between Belkin router and Belkin WLan card. Therefore you will get the best performance.
However, on your Equium you should check the WLan card properties. There you should find some options which could increases the card and connectivity performance.
Important: The power saving option should be disabled in the card properties. Try also to set the WLan range to the highest level.
Additionally its advisable checking the WLan card driver updates. If you use a Intel WLan card check the Intel page for updates.

IPv6 Dropping Frequently Causing Disconnects

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