Cisco Router 1941W - WAN Keeps Disconnecting Randomly?
Oct 23, 2012
We are using Cisco router (1941W model) and our the WAN interface keeps going down randomly (sometimes happened twice within 1 hour, sometimes worked fine for 2-3 days before getting disconnected). After getting disconnected, if we unplug the cable that connects our router to the fiber terminal and then plug in back, everything works fine immediately.
We had asked our Internet Provider to come 3 times to check the network line, renew the fiber terminal and do some investigations, they said there should be no issue on their side. If it's true then there must be something wrong with the router.
We also enabled ip accounting on the router and saw very low rate of small packets coming to WAN interface.
During the downtime, LAN interface still worked fine.
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Jan 9, 2011
For the past few months my router has been randomly disconnecting me and everyone who is connected to the router from the internet from anywhere between 10 seconds and 1 min and i can't seem to figure out what has been causing this. It can happen multiple times a day or it can go for a week without happening. it makes playing online games extremely annoying.
Hardware Version: A4
Firmware Version: 1.32NA
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Jan 21, 2013
My new router has started to disconnect for a second or so from the internet then reconnect. I have been unable to see the issue and changing the frequency was unsuccessful. This has also been happening when connecting both wired and wirelessly
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Feb 19, 2012
I have an E1200 and its been doing wired things like disconnecting itself randomly and i also need to set it so that the NAT type is open
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Nov 26, 2012
It's plugged in via an Ethernet Cable from a Homeplug Adapter, since the modem is not in the same room as me. Basically, I've been having problems with the internet randomly disconnecting and for no reasons. There's some days where it'll go fine, no problems at all, other than a few things that always disconnects it, then there is days like today, where it keeps connecting every time I try to go to a webpage. I cannot seem to upload anything to the web (Youtube, Mediafire, etc.) without the internet disconnecting before it uploads. The only other problem that I've had constantly, even if it is working fine, is I cannot seem to do a video call on Skype or really use my webcam to broadcast online without my internet disconnecting. Also, when I play games via Steam such as TF2, Call Of Duty, etc., I have no problem with the internet at all, it works smoothly and never crashes when I play games. And the desktop is the only thing that ever has this problem. We have 1 other desktop, and 3 laptops (all connected wirelessly) and they do not disconnect from the internet at all. This has been going on for quite a while, and I'm still not certain on what is triggering it.
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Apr 13, 2011
My internet will disconnect and reconnect randomly, nothing works every time to fix it, the time online and offline is random, sometimes it works when i turn on the computer, sometimes it doesn't , sometimes it stops after a while, sometimes restarting works.
I am running Windows XP on a desktop computer with the most current service pack installed and I have a linksys wireless router installed in the computer. I know the router isn't linksys, I think it may be netgear. I have no way of connecting wired to the router. My bf's laptop running windows 7 is used wirelessly in the same room as my desktop and rarely has any problems connecting. I should mention that this problem also occurred on this computer while living in other locations and using different routers, but it was never this sporadic. It was best when used in conjunction with the linksys WRT54G router.
I realized today looking at the status of the wireless network connection that the network name and signal strength will disappear and reappear randomly, all while still saying I am connected and that I have sent and received packets, and sometimes randomly changing connection speed as well. Sometimes an alert bubble will pop up saying that my internet connection is connected and that I have excellent signal strength, with varying speeds, but the internet still doesn't work. Or sometimes it does work. How to access it.
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Sep 6, 2011
When I click on certain links, the webpage doesn't load, and I can't access that page only until going to it later.
Sometimes it says "no data received" and sometimes it gives the usual page for no internet connection
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Jun 23, 2012
I'm no good with computers, or anything like that; but this since about two days ago, my internet has been cutting in and out. One minute it will work fine, then a few minutes later it will disconnect, and then reconnect a few minutes later.I noticed that the globe symbol on my router either flashes when this occurs, or the power button turns orange. Why this is happening, and why it is happening all of a sudden ?
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Jul 16, 2011
A couple of months ago my internet (Insight Broadband) began to randomly disconnect and reconnect, and recently it has become more frequent (every 5-10 minutes). I connect to my internet wirelessly through a linksys router. It's not my laptop because our desktop and xbox experience the same frequent disconnects and reconnects. I've tried the dns flush with no success. Ive also changed the wireless channel to 1 to prevent any interference. Also, our linksys router is about 4 years old, which could be the cause, but I'd like to eliminate all other possibilities first. And finally, every time i click diagnose connection I receive the error " Your computer appears to be correctly configured, but the device or resource (DNS server) is not responding.
And just recently our internet has become very slow (youtube videos taking longer to buffer with many pauses). I eliminated the possibility of my router itself being at fault as when I plugged my xbox or laptop or desktop directly into the modem the same frequent disconnects and reconnects occurred. Here's a copy of my ipconfig /all: [code] Also, sometimes when I diagnose the connection I don't get this error but the random disconnects and reconnects still occur.for the past couple of days or so I'm no longer getting the first error message about a DNS server, however the disconnects are still occurring as often.
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Oct 12, 2012
I have a 2nd computer wired up to my modem, but the LAN keeps randomly dropping every 2-5 hours It never drops for my main computer.I tried swapping cords and ports, but it still disconnects, while my main computer remains connected The internet worked fine when connected to another modem in another house.Do you think this is a problem with the modem or Windows7?I hard-reset the modem to factory settings, but it still happens.the modem is a Motorola Surfboard SBG6580
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Jan 4, 2013
Belkin N750 Part # F9K1103 v1000 disconnects me randomly. It's get really annoying do to I keep having to re-log into a session after disconnecting etc.
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May 28, 2013
I've had a N5010 laptop from a few years without many problems, using Win7 60b. Just a few days ago the wireless connection started failing saying there is no network available and that "there was a problem", what I had to do is right click the icon on the task bar, select the troubleshooting option that windows offers to fix it automatically, and after a minute or so the wireless is activated and working again, but just for a while since it lasts about 3~20 minutes and the problem starts again.
Other devices (like phones or other laptops) don't have this problem, so it's not a router issue.I've tried updating windows, re-installing the official drivers, rebooting the system, etc. I've also discovered that ethernet connection is just not working, as if it weren't there. There is no device shown on the windows device manager for ethernet.
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Oct 27, 2011
I recently purchased a 1941W Router and upgraded it to IOS15.2T. After upgrading I was disapointed to see that it didn't have IPSEC VPN capability. What do I have to do to get this support activated/installed on this device?
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Mar 2, 2012
Our boss decides to purchase 1941w Router & he asked me to do the necessary configuration. my knowledge in CISCO router is a CCNA level & i've never configured an embedded AP or ADSL line on a router before.
the topology is as the following: as for the wired Network, we have one LAN (192.168.1.0/24) connected to GE0/0 (192.168.1.254/24) on router & has the ability to access the internet which is ADSL configured as ATM0/0/0
As for the wireless network ( now here is the problem) what i want is the following:
I want the wireless network to share the same network with the wired which means 192.168.1.0/24 i want to use WPA encryption how to configure the AP?!
this is a true challenge for me. After a lot of searching, most of the sample configuration over there is about creating two VLANS!!! & two DHCP Pool.
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Oct 24, 2011
Can the embedded AP be configured as a standalone AP without configuring the router's functions? I need to configure one temporarily until we get the 1252AP for the location.
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Aug 28, 2012
I have vlan 1 in 192.168.5.1 255.255.255.0 and bvi1 192.168.5.2 255.255.255.0. It was working before but something happened and I cannot figureout what. Vlan1 cannot ping bvi and viceversa.
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Sep 18, 2011
I have a copper over ethernet connected to an adtran 908e connected to an ASA 5505 with a port 192.168.150.254 connected to the router on the Gigabitethernet 0/0
I can ping to internal and external ip addresses but when a device is connected through the wireless signal then the device cannot ping anything; what could be stopping the device from pinging any ip addresses internal and external?
I posted my current config for the router and ap:
Router:
Current configuration : 2245 bytes
!
! Last configuration change at 16:03:06 UTC Tue Sep 6 2011
[Code].....
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Feb 2, 2013
From the router I can ping the 2nd router, all its host and all of the 1941w interfaces.
From the 1941w AP i cannot reach the 2nd router or any of its host, but I can reach the interface that is connected to the 2nd router but only one side of it.
Attached are both my router and ap configs. At the moment I am just trying to reach the 2nd router and its host so I can update the AP IOS image but cannot reach the tftp server.
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Apr 20, 2013
open specific ports on 1941w Integrated Services Router.This specific router is a wireless VPN router that has a wired module and a wireless module and VPN so I'm getting 3 subnets on my network - 192.168.1.. for the wired connections, 10.100.1.... for wireless LAN connections and 10.100.2... for VPN remote connections.I know that by default all connected computers can access my Linux server data through telnet so the telnet port is open by default, the problem is that I have some other software licensing system on my Linux box that needs to be accessed through port 27000 and most of my users are using wireless connections and can't access that license because post 27000 is closed.what is the comand to open this post or any other port that I need to be open on the wired module, wireless module and VPN or at least poit me to somewhere where I can find all the commands that I can use for this router?
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Dec 26, 2012
how to debug why sometimes the dot11radio0 / 1 go down? Sometimes, the lights on the router indicating the radio status go out. Usually, a reload of the ap will bring them back up...Maybe hardware is starting to fail? Just unsure on how to debug to find out why it turns off sometimes.
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Oct 10, 2011
I am currently working on a 1941w router. The problem that I am having is that I am unable to ping the switch that is directly connected to it and I am unable to ping from the switch to the router. If I take the address off of vlan 1 and move it to gi0/0.1 the pings work, but then client traffic on the wireless ap inside the 1941w fails.
Here is the releveant config off of the 1941w
version 15.0
no service pad
service timestamps debug datetime msec localtime show-timezone
[Code].....
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Jun 5, 2013
Setting up a new 1941w router. Already have another one offsite that's working great. Based the new configuration on the one I have working and can route traffic, etc. My problem with this new one is that I cannot get into the embedded AP to configure. My configuration follows this question. I have checked status of the interfaces and everything is up except VLAN2. I've used the command no shutdown within the VLAN2 interface, but the operational status is still reading down. The admin status is reading up. All other interfaces are up and up. [code]
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Sep 7, 2012
I'm having a problem with port forwarding on my 1941W router.I would like to forward ports 8001 and 2001 TCP from Internet to a local host on the internal network.I am able to connect to the local host from the internal network, but it does not work from the Internet.
Here is my config:
version 15.0
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router1
[code].....
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Aug 20, 2012
trying to configure a 1941W router... Spent many hours on these forums... The only thing I'm still stuck on is that, I'm not able to get an IP through DHCP on the BVI1 interface of the embedded AP.
Here is my router config:
Current configuration : 3490 bytes
!
! Last configuration change at 22:00:35 PCTime Tue Aug 21 2012 by root
[Code]......
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Apr 27, 2013
I loaded the following MIB into PRTG 'CISCO-WAN-3G-MIB' hoping to record RSSI and ECIO values on my 3G 1941W cisco router. RSSI is now recording using 'c3g current gsm rssi' however ecio isn't recording using 'c3g current gsm ec io' or 'c3g notif ec io'.[URL]
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Feb 20, 2013
can assist with a Cisco 1941w configuration problem.I have just installed a 1941W onto our network. It handles the routing of our block of IPs onto the internet through our ISP using 2 x ADSL2+ interfaces. his all works. For the sake of privacy, lets say that our block is 100.101.102.128/25.I am now trying to get the 1941Ws Wireless AP working.I have set up the management VLAN on a private range (192.168.1.0/24), the AP on 192.168.1.2 and can now access the AP interface on 192,168.1.2 from anywhere on our LAN.This tells me that the cisco is routing everything to and from the AP on the management network (192.168.1.0/24).
I have set up VLAN 2 on the AP, configured it to use WPA, set the key, created an SSID and assigned it to VLAN 2. I am having some trouble assigning both 2.4 and 5GHz radios to the SSD. For some reason after setting up everything using the express setup I could not save Beacon Mode unless I disabled Radio1-802.11N5GHz and now I cannot re-enable because the web interface claims that this interface is not enabled for the VLAN... but that's another question.When I try to access the AP, I am authenticated but never get an IP address. My best guess is that DHCP on the router is not responding perhaps because VLAN 2 is not routing to the main network.
The VLan2 interface on the router side is definitely enabled and set to 192.168.2.1. I have set up a DHCP pool on 192.168.2.1 that is assigned to Vlan2 (I did manually because CCP claimed there was an overlapping region.. even though there wasn't). I can ping 192.168.2.1 (or any other internal address) from the AP. VLAN 1 and VLAN 2 are set up the same way (no ACLs, both in in-zone, both with NAT off)So... why isn't the router giving the wireless client an IP address? Is there a way to simplify the AP so that VLAN 2 routes directly onto my main IP range?
As an aside... between CCP not wanting to add a DHCP range (claiming an overlapping region but manual entry worked), the AP web interface's complete lack of responsiveness (it's horribly slow) and the AP interfaces inability to provide a useful error message... this has been THE most frustrating thing I have ever had to configure.. With the rest of he industry making everything easier to use, Cisco seems to be moving in exactly the opposite direction.
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Mar 23, 2013
I own a 1941w that is covered by a service contract and I'm entitled to download software for it. But unfortunately I don't see any option to download AP software for it. I need an upgrade for the internal AP to connect it to a virtual WLC.Apparently I need ap801-rcvk9w8-tar.152-2.JB.tar to get this done.I can find it under the 800w series, but I don't own a service contract for that so I can't download anything.
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Aug 25, 2011
I currently have:
- 1941 (not wireless) router
- 1140 Access Point
It looks like I got the controller-based AP instead of the standalone. My question is, does the 1941 (not 1941W) have a wireless controller? If not, is there a controller module that I can add to my router? Or should I return the AP I have for the standalone version (or the 1941 for the 1941W)?
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Aug 7, 2012
We let cisco professional to configure 1941w router with EHWIC-3G card. So the Gig 0/0 and wlan clients could communicate the internet over 3G.So we bought another 1941w and copied the config over to new one. Can ping from console but not from client pc. The only differents between old and new is "ip source-nat" line. New router just don't save it to running-conf. No errors also.
Router#show run
Building configuration...
Current configuration : 3238 bytes
!
! No configuration change since last restart
version 15.2
[Code].....
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Dec 27, 2012
I'm currently trying to get up to speed on a 1941W ISR. I belive i have most of the configuration correct based on reading the documents on this site. However, i'm noticing that my lan to lan network performance is very slow. Peaking out about 3mbs. I was reading some documentation that suggested MGF (MultiGigabit Fabric) might resolve this problem.
I have a basic setup in my test environment trying to emulate a branch deployment. 1941W connected to a access switch (3400).
- I'm getting slow perfomance (thoughput) between the vlans 66,30,10. Will MGF fix this problem? How do i configure it?
Building configuration...
Current configuration : 7474 bytes
!
! Last configuration change at 09:26:04 PCTime Fri Dec 28 2012 by xxx
! NVRAM config last updated at 09:26:05 PCTime Fri Dec 28 2012 by xxx
[Code]......
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Jan 14, 2013
Feature AIR-CAB020LL-R AIR-CAB050LL-R AIR-CAB100ULL-R AIR-CAB150ULL-R Cable Length 20 ft (6 m)50 ft (15 m)100 ft (30 m)150 ft (46 m) Transmission Loss 1.3 dB3.4 dB4.4 dB6.6 dB for Cisco 1941W router with external antennas?
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Apr 16, 2013
I have a customer who wants to do a static mapping in order to prevent any downtime for one of his public web servers. Any good example to follow? FYI, the edge device is:
CISCO1941W-A/K9 (configured as a zone based firewall)C1900 Software (C1900-UNIVERSALK9-M), Version 15.1(1)T
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Jan 2, 2013
Something strange is happening to my Cisco 1941W. Every time I reboot the router i loose the running configuration of the service-module (Access Point module). The weird thing is that the router's configuration remain the same. I made sure i save the configuration by issuing the wr command on the service module console but still happens. My router's current IOS version is 15.0(1)M1 and my AP's is 12.4(21a)JA1.
I also did another test by making sure the startup-configuration was identical to the running configuration and when I reload the router still happens.
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