Routers Are Losing Their Configurations Or Network Hangs
Jan 31, 2011
I'm trying to figure out what's wrong in a LAN having 70 computers.There are three routers in the same subnet with three switches (kinda crappy). DHCPs are off.The problem is that randomly the routers are losing their configurations or the network hangs a lot. There is no problem in the routers (tested many times).The thing is that when i start packet sniffing over the network using wireshark there's a big flood (over 10.000 packets in a sec) coming in a internal ip inside the network ex. 192.168.1.60.Next thing is that when one of the routers shuts down manually, the other one is losing it's config. Today, when i went to check 192.168.1.60 i saw the power plug was not connected, when i re-plugged it the flood was gone. (the computer was turned off).I enabled SPIs / firewalls in all of the three routers and there is no problem yet.
I have recently purchased a RVS4000 router and am experiencing major downtime.Almost everyday the RVS4000 router losing internet connectivity. I noticed that when this happens I cannot login into the router from my pc which is connected to the RVS4000 network.The only way to restore connectivity is to restart the RVS4000 by disconnecting power and powering back up.The router's WAN is connected to my Cable modem.The RVS400 has two PC connected to it. (port 3 & 4) I have a Cisco 8-port switch connect to the RVS4000 with 3 additional PCs/devices on it.
We are deploying over 20 RV180W Routers for a client and need to find a faster way to configure them for shipping.We have created a base image (all settings that will be shared between the 20 locations), we need an easy and quick way to make IP changes for the 3 VLANs and Local Security Groups for the IPSEC VPN.I tried to edit the CFG file by hand, but the checksum fails when it is loaded into the RV180W.How can I accomplish this? Can I manually create the checksum?Can I remove the checksum?
Few months back I had purchased this Router. But I did not use it till last week. Since the time I have installed it, it does freeze often (between 5 to 30 hours).
I can connect to devices within the subnet, but not elswhere. I have to remove the power and plug it back for it to respond. I have updated the firmware to the latest one that was on the Cisco site.
We are using router RV042 since last three it's working fine with single broadband connection but when we are using as a load balance it will hanged three or four time in a single day. I have updated firmware also but still my problem is not resolved
Below is my router detail. CPU: Intel IXP425-266 Firmware version : 1.3.12.19-tm (Feb 13 2009 13:03:21) DRAM : 32M Flash : 8M
Latest firmware is v4.1.1.01-sp.bin but it will required v3 hardware, I don't know how to check hardware version.
I was hoping that the latest firmware would fix my (2) 'bugs', but it did not. We are using the RV042s at our remote medical clinics as an end-point VPN router to our Nortel 1700 VPN router, replacing our old Nortel Contivity 100s.When I try and do a reset when connected remotely via the WAN interface, the RV042 hangs and will only reset by re-powering.
I'm moving into a new data center. I don't consider myself a network engineer or anything but I do understand the basics. The new data center I am moving into routes my network to me a bit differently than my old data center. The IOS on the Cisco 2621 is: c2600-i-mz.123-26.bin
I am assigned a /29 block which they configure as the routing network, it looks like this: Routing Network: A.A.A.0Routing Network Sub net Mask: 255.255.255.248Routing Network Def Gateway: A.A.A.1Customer Usable Address: A.A.A.4
I've been assigned a /28 block which is B.B.B.240/28. They stated that in order for me to use my allocated blocks, I had to act as my own gateway, routing the traffic through the routing network. This goes just a bit beyond my networking knowledge, though I still understand it, I just don't know exactly how to execute. I'm assuming my 2621 with 2 Fast Ethernet interfaces should be able to handle this routing scenario.
Any sample configs, or possible a link to a how to to get this setup? I was going to use FreeBSD to do the routing, but a appliance based Cisco router is much more attractive of an option to me.
My PC boots fine (via SSD) but as soon as it passes the login screen and brings me to the desktop, the network connection icon has a circle going around it for about 30 seconds. Except the circle isnt moving, or rotating as if it's frozen and when i click on it to go into the network and sharing settings, it hangs. While this happens i can access anything else fine except internet based apps. Once it connects, everything is normal.
I use a Netgear Power line Adapter and have been for years, and have never had a problem with it. I am running Windows 7 Enterprise 64 bit.
I'm running Win7 and have recently had problems at startup. Initially I thought this was a Skype issue as removing it seemed to work, but alas the problem remains with it uninstalled. The PC boots ok and I can open programs quickly enough, but if they need internet access they hang for 5mins or so before the block clears and all is well. I have recently changed ISP provider to BT Broadband (UK) and have a new router which sets itself up and had been working fine.
I was working as IT Support in an encoding company. I support over 500 desktop users. my problem is about in entire network because i always encounter hang network in my grave yard shift. Our network system set up have domain server, antivirus server, database server, 4 PC's use as backup servers and 3 unit of network attached storage and approximately 500 units of desktop use for production in encoding. I always experiencing network hanging then after all system will be freeze, so i suggest to shutdown all pc for usually in 5mins then turn on again. In an hour the problem is still exist again and again. I did all possible way to make the production smooth run for my whole shift but still after some hours it occurs again. I dont know what would be the possible reason why the network hangs and stuck up. The network attached storage did not reach the entire capacity, the antivirus server is still updated, the domain and database server are working properly even the PC's use as backup server. There is no internet connection we use in production, so i assure that no virus we encounter in all pc. Is it the cabling? or is it the switches?
Firmware version 1.3.3.5 STAR 9202 Chipset 64 MB DRAM 8MB Flash DOS, Block WAN Rq, Remote mgmt all OFF IPSec Tunnel none used
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Every day or so the Router becomes unresponsive to the HTTP mgmt interface, as well as it no longer offers DHCP services.then this happens the only remedy is to power reboot.
Everything comes back online just fine, however, the LOGS are initilaized so no data to figure out what`s going on.My next step is to setuo a syslog server and have the logs copied out.( No, I have no Torrents running at all, but I do have several devices like AppleTV, PS3s etc that run streaming Video plus I have the SPA3102 )
I have a wi fi sky adapter,and when i plug it in,it says installing driver software. But..then it just hangs there,and eventually leads to-driver was not sucessfully installed(that is when i plug it out,but i waited more than an hour before that)I tried uninstaling and updating the driver for it,but it didnt worked.When i tried to uninstal the driver,again it just hanged.That is untill i unpluged the adapter..I have manually downloaded the latest driver,and when i check in properties it says that device is working properly.
It is set to dummy mode so it should just pass through to the WRTG54S router which handles the DHCP.2) I have 6 computers sucking the internet off of the router. One is wireless.3) I have been set up for about 6 months this way. 4) I use to drop the DSL connection about twice a day. I would unplug the WRTG54S and plug it back in and everything would reset and work. Then, recently it has gone to about 15 times a dayThen, we have to make a major electrical change in the building, which required us to go to generator power only for 5 days. For 5 days, we never dropped the DSL connection a single time. Power was restored. Generator sent back home. Problem is back. Dropping DSL connection again.5) Hooked up APC battery backup power smoothing device to 3 cpus, WRTG54S, and DSL modem.
I have noticed that I have to reset the power on my srp527 more and more often, at first I thought it may be a glitch with my service provider but this is now happening more and more regularly. The internet just goes off, the network still exists and all the lights remain on (both adsl lights stay on) all the computers on the network (3 computers) cannot access anything on the net. A simple power off/on of the router restores everything but surely you do not need to do this everyday?
I have a problem with my home network (diagram attached below). I sporadically lose connection between my Router and the devices behind the switch. I have replaced the Ethernet cable between the 2 so I don't think the problem's there. It will work for a week or so, then just lose the connection. I then try a combination of rebooting all of the devices on the network and/or unplugging and re-plugging the cable connections and sometimes that works. It's a relatively new router, but can a router be "underpowered" for pushing a signa
ive been having a problem with my router since ive been using it for its wireless capabilities. it is a linksys wrt120n router. our internet comes from our local cable provider and it is good internet (10Mb download speed). running to our old router that split the connection between my xbox and our desktop computer worked fine and even for a large amout of time after i switched to this wrt120n there were no internet problems. now all of a sudden the router drops connection multiple times a day which can become a hassle when i'm doing something importaant and lose connection. and just a little bit of extra information i cycle the systems every time it does it and theres no fix.
I've got a linksys router with two desktops running on it fulltime. One is hardwired (Win 7), the other is wireless (Vista). Normally, they have no problems with connecting. But I just got a laptop (Win 7) that is causing the whole network to go down for about 15-20 minutes then it will come back up for all my PCs but still drop out sporadically causing another 15-20 minute wait Both my desktops are unable to connect during this time. I also just got an old refurbished XP laptop from work, and it connects flawlessly. Then we had a friend come by and try to connect to our network and her laptop had the same problem.
My desktop is connected to the internet via cable modem, then to my laptop via network bridge between the LAN and wireless NIC, then through to the laptop via wireless ad hoc network.
The problem I'm having is that my laptop loses connectivity every 5 minutes, though it doesn't show a dropped connection. The desktop does not show any connections to the current network at anytime, however I still get connectivity on the laptop albeit only 5 minutes at a time.
I have, on both systems, disabled power saving for the wireless and wired connections; and also that they have the most current drivers.
It does not have to be idle to lose the connection either, I can be in the middle of something when it drops.
it shows that it is Online getting an Excellent Connection thru my Home Network... I go Online using Firefox with it at home.. stays up for a few minutes .. can get onto the internet...then loses the ability to stay connected.... it still states it's Connected though ... kind of baffling... like something is timing out then blocking it...I tried shutting down my AVG Anti-Virus.. also shut down Windows Firewall... it still continues to lose the Connection while stating it's connected getting a good signal... both of these are configured correctly as far as I can seeI've re-installed my Wireless driver thru the Acer Recovery Management included on the Netbook.. still no good..
I have 2 older xp pro tough books that connect to my domain via a pair of versa vx 400 access points. automobile technicians use these computers to communicate with cars via a separate wireless card and WiFi device (SPX MVXI) that broadcasts a wireless signal.they always connect just fine to the network but sometimes they drop there connection and don't rejoin which screws up my scheduled tasks (nightly upload). They will reacquire the connection every time if i select it again manually in the windows wireless config.here is what I have done so far
1. set up exclusion range in DHCP distribution on my DC
2. set the laptops up with static IP's within the exclusion range.
3. configured the laptops to auto connect to the network even when its not broadcasting
4. set the access points on channel 7, and the devices on 1 and 11.
I have done a lot of research on this issue, a rep from versa told me that Intel proset wireless isn't very compatible with there product which i this is BS since it does the same with with the netgear WiFi PC cards.
I have three computers on my network. Two are wired and one is wireless. I continually run into the probably of getting a limited connection after the computer goes to sleep and I wake it up. I attempt to automatically correct it, but this doesn't work. I try to use the command prompt with ipconfig/release ipconfig/renew and it doesn't work. Then I try to disconnect the adapter and it doesn't work. I also reset the modem and the router with no resolve. Most of the time the only thing that works is restarting the computer. In addition I do use DHCP static addresses for the computers on the network. What is causing this and how do I fixt it without restarting the computer?
lose network connection on htc one v. At settings, mobile network says radio turned off. Could I have done something to cause this. I`ve had this phone for 4 months. This problem just started.
I have been using DIR 615 at home for around one year. Now I notice that after some time of continuous usage (say around 3 4 hours) the Wireless network is lost. Thereafter only reboot brings it back. I checked for any latest firmware upgrade from admin page, but it says device already has the latest.
I am having a very frustrating problem with my new Dell XPS 8500's wireless connection - Dell Wireless 1703 802.11b/g/n (2.4GHz). Basically, I am losing my network connection every couple of minutes. The process goes something like this:
1) Not connected - Connections are available
2) My network disappears completely (yet all other local networks are still visible) for a matter of seconds then reappears
3) I try to connect and receive "Windows was unable to connect"
4) I press "Troubleshoot problems"
5) "Resolving problems", "Resetting network adapter", "Troubleshooting has completed"
6) Problem with wireless adapter or access point - Fixed
7) I am reconnected to the network/internet with a full 5 bars
8) Process repeats itself five minutes later
I have been able to come to a conclusion that is not the adapter, or the router, but some sort of compatibility issue as:
a) I have tried connecting to a different wireless network and it has worked fine
b) There are other systems in the household that connect to the network and are not experiencing the same issue
It is not a distance issue as router is 2 meters away from the adapter with nothing in between, the other systems that use the network are much further away.
What I have tried so far: - Changing the channel from "Auto" to a set number
I have Sky Fibre Optic Broadband, with a router supplied by Sky, (You can't use any other router, as username/password for internet is already put into router & they will not give you details when you phone them). The router they supply has only four Ethernet ports on. One is used by Sky to give you Fibre Broadband, thus leaving you with three.I have five devices that must use Ethernet, as they do not have wireless.How do I get more Ethernet ports available to use, without losing the Sky router, as Sky will NOT let you use any other router.
We are running Sharepoint 2007(sp3 and wss sp3) on a dell pe2950 running Server 2003 std x64 sp2, 4 146gb 15k sas raid 10, 16gb ram, dual xeon 516 3ghz. the network card is a quad port intel 1gb pci-x server nic. Was running broadcom net xtreme dual port onboard, and had the same issue.
We are losing partial network connection, after about 14-15 hours of the machine working correctly. What happens is that it cannot ping, or access, any machines not on the same network segment(this machine is on 192.168.3.* and cannot access machines, or be accessed from 192.168.2.*, 192.168.4.*, etc, etc). what i have found is that when i try to ping 192.168.2.210(our dns, dhcp server). its times out about 20 times and replies 2-3 times, and then repeats the cycle all over again. i have done a winsock reset on the machine, and sometimes it starts back up and works again, sometimes it doesn't.
There are 3 laptops in my house including mine, and i keep losing network/internet access every couple of minutes so I have to go to the router, unplug the device, and plug the device back in every couple of minutes, usually 10-15, although it varies, and the same has been going on with the two other laptops, so it's not just my laptop.
I have a Windows 7 PC and a Windows XP PC that I’m sharing files on. All was well for a while, but I’ve started to lose connectivity between computers when one goes into sleep mode. Not sure at this point if it’s the XP machine or the Windows 7 Machine that’s causing the problem.
i have a Dell Inspiron 1440 notebook and it keeps either shutting off the wifi or losing the connection to the network i have replaced the WiFi card with a new one and tried a couple of other settings and it did great for a week and now its doing it again and also it doe's not go to sleep when you close the lid and i have it set to do that .
I have an Inspiron 1520 which, approximately once per day, is losing the network connection. Basically I can be right in the middle of something then all of a sudden anything internet related (eg browser, email, skype, other software) stops working, and then a few seconds later the little globe disappears from my network icon at the bottom of my screen.
The only way to get my connection back is to reboot my computer. I've tried the "repair connection" tool, but that doesn't work. I've tried waiting, but that is futile (and impractical)
This happens whether I am directly attached to the router via cable, or I am going through wireless.
Other devices are unaffected at the time. It is only my computer that loses the connection. The two phones, two other laptops, desktop and tablet all remain connected. (Hmmm - I seem to have far too many devices!)
Do I have a failing part? Or is this maybe a software issue? I'm thinking perhaps it is software because after a reboot everything returns to normal and the problem tends to go away for 24 hours or so.
our autonomous 1252APs. It loses network connectivity irregularly and ends up disconnecting everyone. It may stay up from a few days to a few weeks. I don't see any log messages that give any clues to why it is doing this. We have 30 of these working worldwide (on the same software level and same config) and this is the only one having the problem.
Things I have tried: Changing software levels - there is a code level where it didn't seem to have this issue, but I can't run it because then I'm unable to monitor it in our monitoring system. Swapping out wireless access pointsRe-terminating the cable on the AP side, it was really difficult to get the network cable into the AP while swapping it outBlocking a company test piece of equipment from connecting using the mac address filtering (it connects with one of their test IPs - weird) – I still see it connecting though I don't see high utilization on the switch port when the issue happens I had a few cases open with TAC, and they were unable to find anything wrong - gave them sh techs of prior to the event and after the event. It was one of those where the tickets were open for a weeks with no updates.
I was using a netgear wndr 3400 and my network stream never failed. i bought a e4200 v2 and my tv loses streaming capabilities after about 10 to 15 minutes.i have to turn it off to get them back and then it does it again in 15 minutes. i know it is not the tv it wprked fine before the new router.
