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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-826L => Topic started by: jimerman on July 17, 2013, 06:53:35 AM

Title: Unstable over multi-week periods of operation
Post by: jimerman on July 17, 2013, 06:53:35 AM
I have found the 826L to be very unstable over multi-week periods of operation.  It will become slow performing as a router, and very slow serving up admin web pages.  So, I have to go through this painfully slow process of logging in, navigating to the admin page, and clicking Reboot Device.

What I would really like to be able to do is schedule regular reboots, like:

[X] Scheduled Reboot
Reboot Every:  [X] Sun [ ] Mon [ ] Tue [ ] Wed [ ] Thu [ ] Fri [ ] Sat
Reboot at:      [ 2 ] : [ 00 ]  [ am ]
  [--Save--]

Title: Re: Unstable over multi-week periods of operation
Post by: FurryNutz on July 17, 2013, 07:03:14 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=41537.0)

Internet Service Provider and Modem Configurations

Router and Wired Configurations
Some things to try: - Log into the routers web page at 192.168.0.1. Use IE, Opera or FF to manage the router.

Wireless Configurations
Links>Wireless Installation Considerations (http://forums.dlink.com/index.php?topic=48327.0) and Managing Signal Congestion (http://forums.dlink.com/index.php?topic=53228.0)

3rd Party Security Software Configurations


I've used my 826L for months and never have to reboot it. There is something else going on I presume as any router should not need to be rebooted unless your doing configurations changes. Let us know the results of the suggestions and questions so we can get a better idea of your situation.
Title: Re: Unstable over multi-week periods of operation
Post by: OC-Carl on July 19, 2013, 07:45:14 PM
Actually it was my previous Linksys router that experienced the very same symptoms that you described that caused to investigate what was going on and the reason why I ended up with a DIR-826L router.

In MY case, I discovered several things: there are between 8 - 11 other 2.4GHz radios operating in close proximity to my house, the 802.11 channel width is greater than the frequency difference of each channel, which means that only channels 1, 6, 11 are free from interference from each other.  (Channels 2, 3, 4, 5, 7, 8, 9, 10 all "bleed" into each other.)  I have also noticed that over the last few weeks, 4 of my neighbors now operate on channel 1, 4 are on 6 and 3 are set to channel 11.  So no matter what channel I choose, there is "interference".  Using speedtest.net I was getting ~3Mbps via wifi.  The 2 computers that are wired to the the router would get in excess of 27MBps. 

According to specs, the router and the device negotiate down to the slowest speed there is a stable connection.  But have you ever noticed how a radio will fade in and out when you are on the edge of the range of the transmitted signal?  So either the router and the device are smart enough to renegotiate, which seems to cause loss of syncing when I am streaming, or new interference disrupts the currently "stable" signal.  Either way I experienced random, slow, apparently unstable, operation.

Enter the DIR-826L 5GHz radio.  Voila!  Wifi speeds same as wired.  Solid, stable operation while streaming.  So nice NOT to see the wheel start whirling during a particularly intense scene!

So that is my experience.  I found an article titled "10 Reasons Why Your Wifi Is Slow" to be incredibly helpful.  I'm sure you could find such info with Bing, Google, Dogpile, etc.
Title: Re: Unstable over multi-week periods of operation
Post by: OC-Carl on July 19, 2013, 08:03:56 PM
Quote from: jimerman on July 17, 2013, 06:53:35 AM
I have found the 826L to be very unstable over multi-week periods of operation.  It will become slow performing as a router, and very slow serving up admin web pages.  So, I have to go through this painfully slow process of logging in, navigating to the admin page, and clicking Reboot Device.

When "serving up admin web pages" and rebooting are you wired or wireless? 

If it gets "very slow serving up admin web pages" while you are wired, is this something that is cumulative over time?  Like is it fast right after rebooting, but slows down, slower and slower as the weeks go on?

If it gets slower over time, I wonder what logging you may have set?  I remember in another router  forum a person complained of a slow down of router operation over time and he was advised to turn off all logging and especially turn off any debugging features.  Never heard if it fixed his problem or not.  My guess is it did, since most people usually come back with "tried <whatever>, still broke".  Just a suggestion.
Title: Re: Unstable over multi-week periods of operation
Post by: FurryNutz on July 20, 2013, 12:12:53 PM
Links>Wireless Installation Considerations (http://forums.dlink.com/index.php?topic=48327.0) and Managing Signal Congestion (http://forums.dlink.com/index.php?topic=53228.0)
Quote from: OC-Carl on July 19, 2013, 07:45:14 PM
Actually it was my previous Linksys router that experienced the very same symptoms that you described that caused to investigate what was going on and the reason why I ended up with a DIR-826L router.

In MY case, I discovered several things: there are between 8 - 11 other 2.4GHz radios operating in close proximity to my house, the 802.11 channel width is greater than the frequency difference of each channel, which means that only channels 1, 6, 11 are free from interference from each other.  (Channels 2, 3, 4, 5, 7, 8, 9, 10 all "bleed" into each other.)  I have also noticed that over the last few weeks, 4 of my neighbors now operate on channel 1, 4 are on 6 and 3 are set to channel 11.  So no matter what channel I choose, there is "interference".  Using speedtest.net I was getting ~3Mbps via wifi.  The 2 computers that are wired to the the router would get in excess of 27MBps. 

According to specs, the router and the device negotiate down to the slowest speed there is a stable connection.  But have you ever noticed how a radio will fade in and out when you are on the edge of the range of the transmitted signal?  So either the router and the device are smart enough to renegotiate, which seems to cause loss of syncing when I am streaming, or new interference disrupts the currently "stable" signal.  Either way I experienced random, slow, apparently unstable, operation.

Enter the DIR-826L 5GHz radio.  Voila!  Wifi speeds same as wired.  Solid, stable operation while streaming.  So nice NOT to see the wheel start whirling during a particularly intense scene!

So that is my experience.  I found an article titled "10 Reasons Why Your Wifi Is Slow" to be incredibly helpful.  I'm sure you could find such info with Bing, Google, Dogpile, etc.