Cisco WAN :: 2811 Loss Of Connectivity Is For 30 Seconds
Jan 8, 2011
2 VLANS are configured on 2811 and terminated on 2960 switch on two ports, not a trunk configuration. Each Port is configured as a VLAN on the switch. Speed and Duplex is auto on router and switch still one port turns orange after few minutes. Loss of connectivity when port is turn orange. UTP cable is changed but still we got issue. Loss of connectivity is for 30 seconds then link is solid green for next 7 - 10 mins and back again orange (time out)
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Apr 14, 2013
We have a customer running a Asterisk based Phone system, using Snom 320 phones and a ESW-520-24P as their switch.
Recently we have been confronted with an issue where every 35 seconds their is a very obvious drop of audio for both parties of a call. We know it is not the phone system as we have run tests directly over the BT copper lines that have no drops what so ever. Unfrotunately when we introduce the LAN in any way, we get the drops every 35 seconds.
We are running the whole solution on 1 vlan, yes I know probably better to use two, but the Cisco cannot automatically detect the Snom 320 phones to swap it to another VLAN, which complicates using a VLAN setup.
I really need to work out how to stop these packet drops, but I am new to the world of Cisco and dont really know where to look or what to try.
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Mar 29, 2010
I have a 2921 series router w 15.1M series IOS. The platform has HWIC-2SHDSL module installed, which is used for point-to-point G.SHDSL connectivity. When I apply a service-policy on atm pvc, after 10 to 20 minutes I lose IP connectivity on ATM interface and tunnel interface also goes to down state. If I remove the service policy on ATM PVC IP connectivty returns back.
Interestingly I use exactly the same config on 2821 platform (w. WIC-1SHDSL installed) and I do not live such an issue on that platform.I tried to carry the Qos config on to Tunnel interface with shaping enabled and "no qos-preclassify" command issued, but the result is the same.
policy-map MetroDSL-llq
class sna-dsl
bandwidth percent 10
class netbios-dsl
bandwidth percent 10
[code]....
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Oct 20, 2012
I have an issue with a loss of connectivity after 10-15 seconds. I have a Cisco WLC 2504 controlling a Cisco 1242AG AP. The following is the topology.
Wireless Client -> 1242AG (AP) -> Port 3 WLC 2504 -> Port 1 WLC 2504 goes to fa0/2 on 3560. Port fa0/1 goes to ASA5505 (Inside)
All devices are on VLAN 10 10.50.1.0/24. AP is getting DHCP just fine and is associating with the WLC just fine. I connect my laptop to it and it connects just fine.
I then ping the gateway (ASA) 10.50.1.1 or the layer 3 interface on the switch 10.50.1.7 and it is fine for about 10 seconds, then it just dies then comes back in a few minutes and then goes away again. I have looked for duplicate IP's and can find none in any arp table.
It I just ping the controller 10.50.1.20 it is completely stable. I have moved the WLC directly off the ASA5505, moved the switch port, changed cables and the problem follows. I have even moved the AP to be directly off the switch instead of the WLC and the problem still occurs.
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Aug 17, 2011
After upgrading an RV042 from 1.3.12.19 to 1.3.13.02, it loses connectivity after several hours. RV042 WAN1 is connected to cable modem (WAN2/DMZ is unused), configured to obtain IP Address.
Cold booting all devices, RV042, AP & Cable modem, re-established connectivity. Only to lose connectivity again several hours later.
Reset RV042 to factory default via reset switch and cleared log. Minimal configuration applied (domain name, hostname, ntp, WAN1 bw=8000).
Checked early this morning and no connectivity. Summary screen showed the same IP on WAN1 port. All appeared normal. Clicked renew, and connectivity was re-established. Same IP as before.
The RV042, when running 1.3.12.19, would run for many months without a hiccup.
This is the log entry when I clicked 'renew':
Aug 18 04:12:40 2011
System Log
DHCP lease info: ip[68.202.x.x] mask[255.255.240.0] gw[68.202.x.x]
[Code].....
Clicking 'renew' did re-establish connectivity, but I'm not sure if it's a dhcp issue or not. If I read the log entry correctly, the router has the IP lease for an hour, which means it renews several times successfully. Connectivity is down in the morning after several hours go by without use. I'm not sure if that has anything to do with it. Again, nothing changed but the code and the RV042 ran without problems for months with the 1.3.12.19 code.
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Feb 24, 2012
Intermittent loss of connectivity in two level router network.Static ip address from DSL modem into WAN port of linksys wrt4g, LAN port to WAN port of dlink dir-615. All pcs, printers ans a NAS connected to the lan side of dir-615 using 16 port splitter box. Wifi set up on both routers. Router 1 is 'public' to the building, router 2 is private to the non profit org. Inermittent(1 or 2 times a week) loss of connectivity to the network and to internet.
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Nov 1, 2012
Laptop: Inspiron 1525 (2008 vintage); Network Adapter Card: 1395 WLAN 802.11g minicard driver version 5.30.21.0; W7 operating system.
Connectivity has been intermittent the last few months and now none at all. Laptop can see the router but can't connect. Tried connecting via hard-wire to the router but no connectivity 2) tried downloading a driver update but resulted in a message saying "software can't be installed hardware doesn't exist". Check of the adapter through the device manager shows "device is working properly". Have two other dells on the same router and neither have any connectivity issues.
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Apr 8, 2012
Randomly when I try to access to 2950 from management tools, switch is unreachable, I have to access from other switch and reload 2950.
Problem only is from managemt tool to managament vlan 1 2950.
The strange thing is that management interface is encountering a very fast increase of throttles, broadcast and ignored packets:
2950#show interfaces vlan 1
Vlan1 is up, line protocol is up
Hardware is CPU Interface, address is 0023.3488.fd65 (bia 0023.3488.fd65)
Internet address is xxxxxxxxxx
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
[code]....
It could be a hardware problem?, IOS has been upgraded.
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Sep 6, 2011
My WMP600N has been giving me some trouble. It randomly, meaning I have been unable to predict the loss in connectivity, drops all wireless connectivity. During one of these blackouts, the device registers as functioning correctly in the device manager. Installation went fine when I bought it last month.I have only noticed this rude interruption during a game of Rift, probably because its impacted so heavily by the interruption.
Further detail:
- The wireless icon continues to display during the loss of connectivity.
- I have another compute and a smart phone which remain connected during the loss of connectivity.
- The duration of the loss of connectivity is approximately 25-30 seconds.
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Aug 6, 2010
As I continue to have various issues with my revision A version of the DIR-825, does an updated firmware is in the works? Or has revision A been DE-supported by Dlink?
I'm still having issues with: Share port printer no longer being recognized/usable until router rebootedLoss/overload of router which causes all clients (wired and wireless) to loss connectivity Router rebooting itself periodically
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Jun 13, 2011
I have configured Cisco 2811 and 3825 routers to connect the main and remote sites as per the attached topology. At the main site, the Cisco 3825 router is equipped with SFP ports (HWIC-1GE-SFP with GLC-LH-SM=) for fiber optic connectivity and also has a HWIC-1CE1T1-PRI installed The Cisco 2811 routers at the remote sites are each equipped with a WIC-1SHDSL-V3 module for SHDSL connectivity and with a WIC-1B-S/T-V3 for backup ISDN connectitivty.
In normal time the routers are using the SHDSL to Fiber optic connectitivty for communication. This has already been configured and is working. Now, there is a need to implement a backup connection between these sites such that in case the SHDSL or fiber optic connectivity fails, the routers should automatically dial up the backup ISDN connectivity so as to ensure business continuity.
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Aug 15, 2012
In the existing network we have Cisco 2811 router connected to Corporate MPLS cloud. Cisco 2811 is connected to Catalyst 6509 switch(set based IOS with MSFC card). Along with that we have two Catalyst 5509. We are upgrading the access layer by replacing catalyst switches with Nexus 5548 & 2248.
For a purpose of testing I have connected 5548 & 2248. Created cPC and ether channels between two. SVI and HSRP configuredon 5548. I am terminating 2651 (test router) on 2248 port 101/1/1. On 5548 I have enabled EIGRP on vlans. I am unable to ping to 2651 from nexus switch 5548 and vice-versa. I can see both devices on CDP but I do not see eigrp neighborship formed.
What configuration should go in 2248 and 2651 in order to establish a connection between two? If test is successful then I will connect 2811 to 2248 during actual migration. I assume that in testing if it works for 2651 then it must work on 2811 router.
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Jan 30, 2011
For a wile now our internet keeps cutting out usually lasting 1-2 seconds we don't get any internet.We have ADSL2+ with Internode.I have done speedtests/pingtests etc. and they are not very useful.
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Feb 21, 2011
I recently got a computer, and it's all running fine, except for the internet.My internet connects through wireless to a box, I have no idea what you call it. Router?The house has three active laptops, all of which are working perfectly fine. This new computer,however, is a desktop, and I am trying to connect to my house's internet through a USB stick device that transmits the signal (D-link, model DWA-110). I know for a fact that this device works for two reasons. Firstly, I've used it in another laptop, and more strangely, it works on this new computer sometimes too.After about half an hour of random methods to make a connection stick, it might connect. And it lasts until the computer goes to standby, or is turned off. This is just random stuff through the network and sharing centre part of the control panel.Nothing ever works twice, and I haven't been able to replicate it for about a week. It successfully connects, and the connection is real because I can access the internet momentarily. But it always just disconnects again. I've tried it in every USB port, too.The signal strength is excellent, and when it connects it works great. It just almost always fails to.
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Jan 9, 2013
I first noticed it in games, and decided to ping my router in CMD. I see the occasional "request timed out", and not sure how to fix it.My other computers connected to the network are working fine, and I've tried USB Wireless adapters in my laptop which work fine, which implies the problem lies with the inbuilt adapter itself.I've tried reformatting, and updating drivers, but to no avail.I thought maybe the adapter might just be faulty, but then I decided to test it on Linux. I pinged the router in the terminal and... it seemed to work fine. I thought maybe some background process in Windows might be doing something to cause the problem, so I started in safe mode (with networking)... still the problem remained.
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Jan 25, 2011
first I couldn't even connect the thing to the internet, now every time I try to download something, like a youtube clip, patch for a game or even a tiny download the speed seems to crap out and then slow to absolutely nothing after just 2 or 3 seconds.. also sometimes I can't even connect to my router with 192.168.2.1, the page is just blank, half to disconnect router and reconnect.. Some days I can't even download a website without having to constantly refresh the page.for a youtube video if I just keep refreshing the page it downloads a part at a time till it gets the entire thing.. My internet speed is around 15 MB/s, before the download quits the speed is always fast..
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Dec 29, 2011
we recently got a new wireless modem and its working fin with great download speeds and all.. but when i play warcraft online(not sure about other games, havent tried) i get this constant 2 second lag spike every 5 second
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Feb 5, 2012
I do a lot of gaming, as does my fiance. We've gone through Time Warner and Suddenlink without problems that weren't fixable. Over the past 2 weeks with WOW! we noticed our games will stutter for a second about ever 10-15 seconds, sometimes less. I called them and told them the problem and they told me, after saying everything is good on their end, to get the port numbers for the games so the can add them to "something I stopped paying attention to after thinking this is BS".
I've never had to do this at any other ISP in any other location, so why do they need it? Is there something else it could be? My DL is showing up at 15.85 and UL is 1.11... 25 ping.
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Dec 27, 2011
So I got a computer upgrade for Christmas. Basically, what it did was replace my crappy onboard graphics card for a decent card to play games better. I also replaced the 250W power supply with a 430W supply (the card needed 300W). Ever since I upgraded, my internet goes on and off all day, only for me. (everyone else doesn't seem to have the problem) We did not touch the internet router at all, and it's wireless by the way. Something must have changed when I put the upgrade in, but I don't know what. the worst thing is, I can't play any multiplayer games now because when I go into a 60-90 ping server I end up hitting 250 ping and teleporting all around. I can't do youtube anymore because my internet goes off and on and off and on. My computer is now basically useless. I'm not allowed to touch the router, but I doubt it's the internet's fault considering it's only me. As I'm typing this, I'm copying the message in case the internet goes down again.
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May 22, 2012
i have ASA 5520 , some times the CPU Spikes above 90% for 5 Seconds then it went down to 35 - 40% ,but what happened when it shoots to 90% all connection go through this ASA gets drops then i receive complain since application traffic traverse this FW ,so how can i see the CPU History for last 1 week , i need to see the times and the date WHEN THE CPU went above 90% for 4 seconds.
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Sep 5, 2012
i have fire wall install pf sense software and sever using ops 2008 R2.sever is ruining ghost convey, and my internet always goes off and on for few seconds
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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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Feb 27, 2013
I'm currently setup with a modem > router > wifi/cable(makes no matter, same issue).If I use the cable straight from the modem into my PC, there are absolutely no issues. Working perfectly.Alright, so to my issue. If I play any games on my PC/PS3, I will suddenly lose my connection for a second or two. Not long enough for me to disconnect from the game. But rather, what should have occured during that time, will just fly by in a split second. This happens, maybe, 2-4 times per hour. I haven't changed much more than the password in the router since i bought it about 3 months ago.Should add that I have a 100/100 fiber connection from Telia, and I drop like 2-3mbit/s from using the router, compared to going straight from the modem.
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Jun 9, 2012
whenever i try to play a online game (Gw2 Beta, Diablo3, LoL etc) it goes fine for a few minutes but then the game "freezes" for a few seconds. Meaning everything on screen stops. I.E my character keeps running on the same spot and so on.I tried checking if i lose the connection at the tray bar, but it says its connected during the "freeze" ingame.
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Dec 29, 2011
I'll start with the beginning of the problem to see if there is a way to fix this.At Christmas I got a graphics card upgrade and power supply upgrade to play games better on my computer. Roughly, from what I can tell, ever since then my computer and my computer only has been having this horrible internet problem. The internet constantly either slows down or totally goes off for seconds or minutes when loading websites, watching youtube, and playing online games. I got this upgrade to play games like Battlefield 3 and various higher requirement games, most of which were multiplayer. Now I cannot play any of them because when I go into an american server with 60-90 ping, I get 200-400 ping and teleport all around like crazy. Makes playing the game impossible. When watching youtube, the video will stop buffering and my whole internet for my computer will shut down and about 1-5 minutes later, it will come back up and load the video.
I might just even be on the web and I try to load a page and bam, Firefox could not load page. I use firefox, windows 7 home premium 64 bit. Model is HP pavilion p6654y. It is not the internet causing the problem from what I can tell because we have not touched the router or modem or anything. Sadly, I do my school online and if I cannot get this fixed by tuesday when school starts next week I am totally dead. I have tried updating drivers, updating java and flash player, using different web browsers,(which wouldn't work anyway because my games would still work badly) I have also scanned multiple times with Kaspersky anti-virus 2012. I know that my computer hasn't slowed down, it's the internet on my computer that has. Singleplayer or non-internet activities work faster than ever of course
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May 21, 2012
However, only some of them remain, so I will describe them again here.My router (Belkin) was working fine for over a year. Everything seemed to be working just fine, then this happened to me once but the problem disappeared itself. However, day after that, it happened again after I restarted my notebook.Basically, my connection drops out for few seconds every few tens of seconds. This means that I get regular lags several times within every single minute. Here is screen from "ping [routerIP] -t".imgur: the simple image sharerQuite frustrating, huh... This is only wireless-related issue, connecting to the router directly using RJ-45 solves the problem.
I have tried restarting and reconfiguring the router, including changing SSID, Channels, turning off security, restarting and restoring factory defaults.My notebook seems to be the only PC having this issue (however, I have not been able to test that out yet, but the problems seemed to come exactly after a PC restart, very unlikely a coincidence). I have tried removing windows network profiles, restarting several times, setting a static IP and removing browser proxy settingsI have been trying to google the solution, but all I found were already known (and not working) solutions, also, everyone seems to be having a less frequent drops (few times in a day, or an hour, I would love that xD).
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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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Jan 7, 2012
im on widows seven and it is a lenovo laptop. It cuts out every minute or so. it say not internet access in my network connections. my router is netgear swell i think. its security type is WPA2-PSK. It mainly happens when i go to play an online game called roblox but also happens when i open up any normal pagge as well. I looked for the WZC but I coudnt find it.
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Dec 26, 2012
The problem I am having is my wired internet connection is going out every minute or so and stays out for about 1-2 seconds at a time sometimes it stays out for around 3-4 mins usually twice a day. This problem has been occurring everyday for the past 2 or so years some days it is worse. I have power cycled the modem and router many times, replaced the router, replaced the modem bypassed the router and it always does the same thing. I have gotten cox cable to come out many times, once was to replace the modem, and it conveniently does not have problems when they come then i look stupid. I have showed them the screen shots of the outages from pinging multiple points on the network as shown in the attached screen shot, as you can see in window labeled 1 is a continuous ping of google.com, window 2 is the first hop on the tracert as shown at the bottom of the picture, window 3 is my modem, and window 4 is my router.
As you can see I never lose connection to my router or modem and it is the same when i run tests from other devices. Every time I call them or show them this picture the only response I get is there are no reported outages and to try to reset my modem and router or they can send a tech. When the tech comes there seems to be no problems and I show him the screen shots and he writes it off as peak hour malfunctions even though it does it at non-peak hours as well. Then when he leaves It starts to freak out again I have gone through this scenario at least 3 or 4 times and at this point am getting very frustrated. Even though it is not very noticeable with normal web browsing in gaming and streaming it is a nightmare. I would have already switched service providers if there were any other that service my area.
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Sep 29, 2012
So lately I've been having this problem where my internet decides to stop working for about 5 seconds every half an hour or so which gets kind of annoying if i'm in the middle of an online game or anything else that requires an uninterrupted connection. When it occurs none of the lights on the modem change and all of the other computers connected to it do not disconnect, only my computer is disconnecting.
So far I have tried changing the ethernet cord, switching ports on the modem, updating all of my drivers, and going into the device manager to disable the cut power to device option on my ethernet card. but none of these seem to alleviate the problem.
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Apr 15, 2013
I have an odd problem where http downloads will stop after a few seconds. I can stream video, do anything else with the internet perfectly. It's just when downloading files from websites will this happen.I use a wired connection. I have tried Firefox, Chrome, and IE10, and this problem happens in all of them. I use a WRT54GS router. I have tried downloading files in Ubuntu 12.10, Windows 7 using wireless, and WinXP, and they all can download files perfectly. Only Windows 8 seems to have this problem. Another thing is that my Windows 8 is a fresh install.I have also tried disabling Windows Firewall to no avail.
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Jun 12, 2011
my internet has recently been spiking every 10-15 seconds constantly. Wired and wireless both experience the spike. My modem is SMCD3GN-RRR. Heres a ping to google.ca: I've called my ISP and they said everything was fine after they ran some tests. What could be causing this and how can I fix it?
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Jan 2, 2012
Every 5 minutes or so I keep getting disconnected from the internet for about 30 seconds. It gives me the error "Error 105 (net::ERR_NAME_NOT_RESOLVED): Unable to resolve the server's DNS address." This is in Google Chrome. This occurs when i'm playing Star Wars: the Old Republic.
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