|>> Re: Losining Wireless Connection
Can you diagram the topology of how your routers, switches, interconnections, and computers are all set up?
In the meantime, here are some GENERAL thoughts. They are separate factors that COULD affect wireless electronic devices...
It sounds like you have quite a few computers/network-devices attached to the network. If several of them are currently continuously connected to the network 24 hours per day, you might experiment with 100% disconnecting them from the network one by one for a day or two at a time, and see if the network behavior changes. If it doesn't change when you disconnect one device, then disconnect another device and proceed until you either find a possible culprit or nothing changes. <Alternatively, you could start by stripping your network down to the bare minimum (e.g. your wireless modem/router and 1 wirelessly connected computer) and progressively add more devices to the network until the failure re-appears. Leave the hardwire connected devices off the network until you have the wireless portion running error-free.>
Disable ALL power management on ALL devices. System level power management and all device (e.g. HDD) power management. No timed power off, hibernation, or sleep modes. Note that for some hard drives you may have to use a drive-specific utility to disable "Advanced Power Management". Before you do anything document your current settings so you can return to them if desired.
Consider also your wireless network may be getting interference at certain times of day. You might try plotting the times. It could be coming from other networks or the frequency range might be simply being swamped by high-power RF emitting devices (e.g. high-leakage microwave ovens, 2.3GHz/5GHz portable phones (not cellphones), wireless cameras and/or "video senders", etc). Neighbors' equipment could also contribute. The interference could result in totally unpredictable behavior, including network shutdown (depends on hardware, firmware, and drivers).
Someone may also be trying to hack your system, piggy-backing, etc and causing your network to crash.
If you aren't using AC power conditioning, you might give that some consideration as well. One (or more) of the devices on your network may not react well to poor quality AC power and contribute to the problem in an unpredictable manner.
More difficult technical assessments:
Check the voltage output of all the "wall-wart" power supplies for your equipment. Check for both the DC output level and verify that there is no signfiicant AC component. For example, if you have a 5VDC unit, verify that it's 4.5-5.5VDC. Then check that the AC component isn't more than perhaps 100mV. Be aware that many cheap units may be unregulated and voltage readings may only be valid while in use, so unplugging the unit and connecting a voltmeter to the power plug may yield false readings. For example, an unregulated 5VDC unit when NOT connected to the device it powers, may actually measure 10VDC...but when connected and powering the device the load causes the voltage to drop back down to about 5VDC. Usually when a device uses an unregulated power "wart" it either has its own internal voltage regulator or it's designed to be somewhat tolerant of input voltage variations.
added wireless cams and video senders to list. (for example, I've had problems with network interference to and by "X10" wireless video cams/senders)
|>> Re: Losining Wireless Connection
If your power dips for a millisecond (meaning you don't see it but it happens) and your router turns off and on; it is loosing conection with your modem and then everything has to be reset.
You have a power problem.
Get a UPS for your modem and router, and it does not have to be the super expensive kind because your wattage is probably less than 100 watts.