SNR And CRC - How To Maintain Connection
Feb 20, 2012
I got Serbian Orion Telekom ADSL Max packet (16/1mb, modem: tp-link td-8816 v5), and used it in Belgrade without any issues with speeds of 13.95mb / 0.86mb. Since I have moved to another city (with recently done all infrastructure) I got this sudden CRC problems, plus ADSL2+ connection problems. Currently at ADSL2+ Annex A. and here is my speed test: And now, what's constantly occuring and is annoying me to bits is the thing that at ADSL2 connection I connect at 10mb with SNR of 6db and it successfully hangs on to the connection, but on ADSL2+ (16mb, max 24mb) with SNR of 6.8db it drops every few minutes. How can I use my 16mbit normally instead of only 10? Maybe some kind of low SNR router could work? How to treat CRC? I have new telephone cable, checked the splitters and also in wall connector.
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Apr 18, 2011
I recently purchased the dir-632 and am having trouble getting my Apple Powerbook G4 to join the airport network. I get this message, you may have entered an incorrect password, (I know that I have not), network name (I know this is correct), chosen the wrong type of wireless security (here I think is my problem) or may be out of range of the base station, (impossible as I am 10 feet away, and my PC's all work in the same range).
-My settings are DHCP client
-cable status Connected
-network status connected
-801.11 mode 11bgn
I get a good strong signal from the airport but get a status connected to network and getting status message at the bottom, but the signal changes to not associated with any network every 30 seconds or so. this just cycles between the two messages. the signal does not maintain a connection.
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Jan 26, 2013
I borrowed a laptop from my sister while my laptop is out of commission. I've been trying to use the wifi, but the connection keeps dropping. I've tried following different pieces of advice from the internet, and I still can't get it working[CODE]
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Sep 5, 2011
I mostly use my computer in my house, so I am not sure if it is a network problem, or something is wrong with my laptop, but I am having a lot of trouble maintaining a constant connection lately. Often times, I try to load a page and it says "connection reset" or whatever.I have a Dell Studio laptop with an Intel WiFi Link 5100 AGN wireless card. I am using the Broadcom Netlink driver along with Microsoft Miniport Adapter (all of this info came from my Device Manager). I'm running Windows 7 Home Premium 64-bit, 4GB RAM, Intel Core 2 Duo T6500 2.10 GHz, Service Pack 1.
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May 30, 2012
So I recently had to get Comca$t xfinity cable internet due to Verizon Fios not being available in my new home.With Fios on my laptop, I didn't lose connection at all in 3 years.With Comca$t, I lose my wifi connection just about every other minute.It just keeps disconnecting and reconnecting.I'm running Vista.My Ipad is connected just fine and doesn't drop connection.This makes me think it has something to do with my laptop. They are the same distance from the wireless gateway.
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Oct 10, 2011
can't figure out what's killing my desktop's connection.I'm running Windows 6 Ultimate x64. I was using an Aztech Wireless-N WL522USB adaptor before, and it was working perfectly fine apart from the fact that it was a tad slow, which led me to buy a new Linksys AE1000 adaptor.I'm guessing I caused some kind of conflict, because after an hour or two of use (and after installation of the drivers), I started getting DRIVER_IRQL_NOT_LESS_OR_EQUAL BSODs, as well as my connection dying on me. I did not uninstall the drivers for the Aztech adaptor before installing the new one, and I have a feeling this might have something to do with it. Anyway, right now, I've switched back to the Aztech (intend to return the Linksys), and I'm still having connection problems. The tooltip of the wireless icon on the toolbar shows "No Network Access", while clicking on it shows "Limited Access". I have neither internet access nor local access to the router. The weird thing is that it works for a VERY short period of time after starting up, where I will have full internet access, and after which it will revert to the Limited Access state.
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May 7, 2012
I have a new DIR-815 router, with a network consisting of one HP desktop computer, one Sony VAIO laptop computer and one Samsung tablet computer.My problem is that I can't seem to maintain a constant internet connection requiring a new router setup at least once a week, sometimes more frequently.Also, even though the network I set up is called "HOME" my desktop, which is the computer connected to my cable provider, never shows any connection to that network. Both the laptop and the tablet connect to the :HOME" network while the desktop connects to something called "Network 5" which does not show up anywhere in my setup. As long as I have an Internet connection I really don't care what the connection is called, but I find it strange that I am connected to a network that apparently does not even exist
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Aug 3, 2011
I recently purchased an LG 42" LD550 Flat Screen TV. This TV is supposed to wirelessly connect to the Internet in order to stream Netflix, YouTube, Vudu, etc. I've purchased and connected the required LG AN-WF100 USB Adapter (dongle). My desktop computer is a Dell Studio XPS 435T/9000. My router is a D-LINK WBR-1310.
The TV simply won't maintain a connection with my network. Sometimes it will find the network just fine for several days -- then it disappears (in the list of networks, only my neighbors' networks show up, not mine).
I follow the steps in the LG manual: I go to "Network" and select "Wireless"
It then shows the AP List. My AP (SSID) is almost NEVER listed, but when it occasionally is, I select it and type in my Security Key. It then proceeds to scan, and 95 percent of the time, it comes back with the error message, "Connection is Failed. Going Back to the List". The other 5 percent of the time, it ACTUALLY CONNECTS for a while (sometimes a few minutes, sometimes a few days). Then it disappears, and the whole cycle starts again
It's been a week now since I actually got connected! Is it the TV or the router? My router works with other devices (laptop, Nook eReader, second desktop computer), so it HAS to be set up right, doesn't it? The entire reason for buying the TV was so that I could wirelessly stream from the internet, and I feel cheated.
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Feb 26, 2013
I need to know if i can connect RAP to RAP and maintain redundancy with connection to WLC.
I have one 1552 with the gigabit ethernet connected to the gigabit ethernet to another device that has a point-to-point link with another device where have a ethernet connection with a switch in the same broadcast domain where i have my WLC.
Next to this 1552 i have another 1552 that have the same situation, both with omnidirectional antenna.
I would like to have a Mesh connection with these two 1552 in 5Ghz, because if some point-to-point link is down i need redundancy to the WLC and my network, because i have some clients connected in the 2.4 Ghz in both Access Points.
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Sep 23, 2012
I'm using is the Netgear WNDA3100v2.What happens is when I attempt to connect to the internet I have to reset the adapter multiple times before it even recognizes my internet. And then once that happens it takes a few more tries to actually connect. And when I'm connected the speed is fairly decent (around 15-30 Mbps). Problem is, every 5 minutes maybe even less, I disconnect. Then I have to go back through the process of restarting the adapter and whatnot until I reconnect. I've been dealing with this problem for a few months now and have neglected to post about it anywhere because I didn't think it to be this unique.
I have tried just about every other "solution" I could find on the problem and none have worked. Also, if this says anything, I have a laptop setup literally 1 foot or less from my desktop and it connects perfectly well and good using the same adapter. Also I recently purchased another adapter (Linksys AE3000). I figured this might solve my ailment but of course, the same thing happens as the Netgear, except possibly worse. And that adapter works fine on the laptop as well. I also just yesterday completely reformatted my computer hoping it would work, but of course didn't. [code]
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Jul 11, 2011
I have been working with my ASA 5505 VPN Concentrator to maintain a connection with one of my remote sites. I have several tunnels that work fine and dont have any issues at all, but one tunnel with outside IP ending in 146 and inside LAN 192.168.3.0 goes down every 24 hours. Attached is the config from the concentrator. I changed around the Security Association Lifetime Settings and the tunnel would drop after that amount of time expired. If I set it to 24 hours, the tunnel would drop every 24 hours. If I set it to 8 hours it would go down every 8 hours.
I have swapped the router a few times, double and triple checked my key settings, disabled keep alives on both ends, and this problem just started happening a few weeks ago after working fine for years. I also get the following e-mail error every time it goes down:
<161>Jul 10 2011 16:19:47: %ASA-1-713900: Group = xxx.xxx.xxx.146, IP = xxx.xxx.xxx.146, construct_ipsec_delete(): No SPI to identify Phase 2 SA!
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Jul 17, 2012
I've recently picked up a E4200 to build a dual band network which is targeting to link up (TV, media server, ps3, laptops) then (maintaining phones etc which only has b/g). While currently only laptops.Before doing any of these I have another cisco modem router DPC3825 which worked fine with giving wireless access.I first attemped to leave the modem router has is and connected the E4200 (ethernet 1 to internet), and changed ip to x.x.0.1 and x.x.0.2 while disabling wireless on the dpc3825 and the DCHP on the e4200 and have default gateway to x.x.0.1. My laptops can connect to wireless on E4200 but it couldn't get internet access.
Then I tried turning the modem to bridge mode & resetted E4200 (factory setting x.x.1.1, auto DHCP), and then connected my devices to both wireless bands. At this point I see router status obtained ip from ISP and Internet reached full speed per ISP's mark but the connection only held up for about 1 minutes. I noticed all the devices still maintained connection to router wirelessly but the router loses internet connection (lost the ip and couldn't get it back).
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May 14, 2012
I have a Belkin Wireless G Router. Whenever I set up a wireless password and network name, within a few hours, the router resets its self to its factory settings. The router will not let me maintain a secure network because of this. How do I make it so that all the settings that I set will stick?
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Jan 6, 2013
I am trying to figure out whyt my DPC3825 does not maintain a FTP session I did not really want to post this message rather I am trying to figure out how to search this board.
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Jun 27, 2012
I am upgrading the network equipment at my place of employment. We use Cisco C3560, 2960, 4506 and I was noticing that IOS 15.0.x is available. After doing some reading it appears that Cisco is going to a pay for the licensing functionality that you want. Do I need to purchase licenses to upgrade from IOS 12.X to 15.0.x to maintain functionality?
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Mar 6, 2013
When we originally deployed our Cisco Prime NCS and MSE Virtual Appliances, the VMsphere server they were on was not able to assign us the level of resources we requested. We installed the MSE as "LOW" system due to the memory and CPU requirements. It has a 2000 CAS element limit. At the time we were licensed for 1000, so no huge problem.
Now, we purchased a Cisco UCS C240 server to run our Prime NCS and MSE on, which gives us our own environment where we have plenty of resources. I also bought 6000 CAS element licensing.
The catch is, how can I either do a fresh install, using the same UID, on our new UCS server, so that our licensing is still valid when we move the box, or, is it possible to do some sort of platform reinstall or upgrade after moving our original MSE VM guest over to the UCS server? Sadly, I can't even utilize the additional 1000 CAS element licensing at this time because it won't allow me to add the 6000 license and use only 2000, on the LOW appliance. So I've got to get these VM guests moved, but maintain any UID's so that the licensing still works.
Is it possible to disconnect the licensing we have, from the UID, and move it to a different UID?
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Oct 14, 2012
N+ requires constant reboots to maintain speed. When I reboot the router F5D8235-4 v3 it will run at top speed of 10mbps, after a day or two it slows to about 2mpbs. A reboot will speed it up again. I would prefer that it run fast all the time. Firmware 3.00.15
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Sep 19, 2011
After reading the post titled "ASA 5520 nat access-list query for internet access" I realized the object-group command could and should be used to make a more efficient and cleaner configuration. My current environment is very small and straight forward consisting of one FTP server in the DMZ. Though the guide: [URL] is straight forward, my inexperience hinders me from seeing how to use the commands effectively. A summary of the configuration is at the bottom of this post
Question: How can I clean up my current configuration? I have two references to the same server, dmz-rdp and dmz-ftp, created for port forwarding ports 3389 and ftp through the outside interface. I can combine them into one object statement, right? for each port I want to forward through the outside interface?
object network dmz-rdp
host 10.10.10.4
nat (DMZ,outside) static interface service tcp 3389 3389
[Code]....
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Nov 15, 2012
I have an Acer 7750G, running Windows 7,connected to our home network using a Dynex router. At the moment this is the only laptop in the house that is having problems with connectivity. Starting yesterday, it only connects intermittently. When I run diagnostics, it says the following problems have been fixed but it either solves the problem for a few minutes only or not at all: "Problem with wireless adapter or access point" or "Default gateway is not available".
IPV6 connectivity also shows 'no internet access' and sometimes IPV4 reports no internet. I've unplugged and rebooted the modem and router a few times but that hasn't solved the problem.
Edit: I ran troubleshoot again, and it says the following issue is not fixed: "Wireless Network Connection 2 does not have a valid IP configuration".
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Feb 3, 2011
I have a Cisco 3725 running IOS 12.3. I have three WAN connections (2 x 100Mb and 1 x 2Mb serial) and I need to replace the 2Mb serial connection with a further 100Mb connection. However, I have not got any spare 100Mb sockets.My plan is to use a switch that supports VLANs, connect the three WAN connections to the switch, each in their own VLAN, then connect the switch to one port on the router, configuring the switch port as a trunk (so that it passes all three VLANs across the link) and configuring the router so that for that single Ethernet interface, it has three subinterfaces each configured for a VLAN that matches the VLAN used for the corresponding WAN connection.
I am a bit rusty on my IOS so I wanted to run this all past the community for feedback. [code] Any thoughts on whether or not that will work? Are there any commands from the original interface configurations that I CANNOT use when moving them to a subinterface? I'm thinking that the speed & duplex commands need to be removed?
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Dec 18, 2011
We're getting "Connaction Timeout / Connection Failure" error messages several time per day. Here is our setup:
Verizon FiOS Internet (ONT Box) --> Cisco ASA 5505 --> EdgeMarc 4500 Router --> Cisco 300-24G Switch --> Dell PE1950 Servers
From past few months, we keep getting Connection Timeout and Connection Failure error messages in our vendor application which connects to SQL Server 2005. Also Terminal Server 2003 keep disconnecting for every few hours.After several days of troubleshooting, we come to know that this Cisco ASA 5500 is not working properly. When I access the ASDM, it shows several warning messages.I know there is a setting option to configure TimeOut, but is there anyway to test and track the ASA 5500 regarding this Timeout issues?
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Nov 26, 2012
I have a problem with my computer connections.When I plug in a network cable to access LAN, a wireless Internet connection gets disconnected.When I unplug the cable internet connection through wireless comes up.Some computers can support both connections cable for LAN and wireless for Internet.Other computers do not support both connections.
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Mar 21, 2011
I just bought a "DLink Xtreme N Gigabit Router DIR-655" I configured it correctly. It works well for the wireless connection but my Lan connection (wired connection) does not work. The Lan computer connects to the router but cannot access the internet. All of my machines work OK with a Netgear G router, including the Lan computer.
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Jun 25, 2012
I am trying to confgure a VPN connection on a Cisco ASA 5505, and I am supposed to translate the inside network from 10.200 76.0 to host 10.1.4.204, and then from that scheme establish a VPN with the host 66.179.80.108 on network 192.168.50.0/24. I was told that this Cisco ASA appliace would be able to translate the network address as a mask in order to make the necessary connection with the other site connection.
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Nov 5, 2011
I have problem with my Internet connection. Recently my Internet connection often get slow. There are 3 connections on the server running Windows Server 2003. 1st is External, 2nd is Internal and 3rd is VPN (please see attahement). There is nothing to do with External and Internal connections, and everytime the Internet connection get slow, I have to disconnection VPN (connection) and connect it again.
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Jan 20, 2013
After connecting to the internet on my laptop, the internet connection will work great for 10 minutes or less than it slows down drastically or essentially not working at all. If I disconnect and reconnect it will work again but just for a short amount of time. The wireless connection works great on iPod, IPhone, and tablet. Downloaded Kaspersky Antivirus which said it fixed some viruses but internet got worse after that. Tried restoring the computer to factory settings and the internet stays connected for what seem a few minutes longer.
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May 13, 2012
Every time I boot up my computer, everything will be working fine for about 5 -10 minutes, but after this, all my browsers will lose connection to the Internet. All of them: IE, firefox, chrome, even the steam browser, all of them just lose connection.The weird thing is, my net connection is perfectly fine: I can still play online games, still use online chat services, still open and use programs like utorrent. It's like something is just blocking all my browser connections.When I run a network troubleshooter, it says "your computer appears to be correctly configured, but the device or resource (Microsoft Corporation: Software, Smartphones, Online, Games, Cloud Computing, IT Business Technology, Downloads) is not responding."I googled this and came across some apparent fixes like flushing and re-registering my dns and restarting my modem, niether of which has worked.In addition, this problem is showing up on two totally separate shared networks and has only affected my computer. Other netwworked devices, like friends/families computers and my iPhone (which I am using to type this) work fine.
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Jun 26, 2012
My hp laptop will no longer connect to the internet thru both a wifi connection or cable connection. I've also tried to do a system restore to an earlier date and it will not let mme do this either
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Nov 29, 2012
so I would like to know if I have a cisco 800 series lets say with interface fa0/0 being my public interface.can I have on this interface an easyvpn connection to a hub and a crypto map xyz connection to another hub?all the tests I've done using gns3 indicate no. when I have both on the same interface only eazyvpn works. when I remove the eazyvpn from the interface then site to site works.I know with a crypto map I can have different tunnels but my question is a crypto map and an eazyvpn on the same outside interface can it work.if yes, do you have a configuration example of the 2 hubs and the spoke?
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Aug 9, 2011
i have cable internet. and im supposed to get up to 15Mbps. but i only get that on a good day. i average around 10Mbps.but im paying $60 a month for the 15Mbps. i can get at&t u-verse at 18Mbps for $39.95 a month for 12 months. then it goes up to $44. does any one her use U-Verse? and do you think its a better deal then cable?
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Aug 31, 2011
Our PC and Modem were in storage for several months. When we unpacked and re connected everything, we could not get conected through our 2 wire modem. We have checked cables, brought other machines into the house , and still cannot get a DSL connection. We tried the proxy settings others have posted. I have not had a chance to see if I can ping any internet suppliers, but to me it seems like a problem with the modem itself.I am not very tech savy, but I am able to follow directions, to trouble shoot.Oh yeah called my Internet provider, and they said it was phone line problems, but phone works great. Didn't even walk me through testing the modem.
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Sep 18, 2012
How to run different different Net connection run in one pC
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Mar 7, 2011
I need to run a windows hyper terminal program between my POS register which has a serial RJ11 port to my PC db9 male port
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