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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-868L => Topic started by: myrok24 on June 19, 2015, 03:03:05 AM

Title: Connection loss
Post by: myrok24 on June 19, 2015, 03:03:05 AM
Hi there,
I have bought an new dlink868l. But something strange is happing with the connection. On my macbook pro, the 5ghz network is sometimes gone in the list, or it won't connect at all.

Another, maybe related, problem: on the third floor the the network is visible, but is just won't connect, says the password is incorrect while it isn't..

By the way, i replaced a TL WR1043ND v1.0 , not with the same problems...

THnx alot!
Title: Re: Connection loss
Post by: FurryNutz on June 19, 2015, 06:56:16 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)


Internet Service Provider and Modem Configurations

What OSX version are you using?
What is the distance between the router and the Mac?
Best placement of the router is on the main floor and central to the building...

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) and Good Neighbour Policy (http://forums.dlink.com/index.php?topic=10634.0)

Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.
http://www.smallnetbuilder.com/wireless/wireless-basics/31083-smallnetbuilders-wireless-faq-the-essentials (http://www.smallnetbuilder.com/wireless/wireless-basics/31083-smallnetbuilders-wireless-faq-the-essentials)
Title: Re: Connection loss
Post by: FurryNutz on July 25, 2015, 11:48:38 AM
Any status on this?  ???

Quote from: myrok24 on June 19, 2015, 03:03:05 AM
Hi there,
I have bought an new dlink868l. But something strange is happing with the connection. On my macbook pro, the 5ghz network is sometimes gone in the list, or it won't connect at all.

Another, maybe related, problem: on the third floor the the network is visible, but is just won't connect, says the password is incorrect while it isn't..

By the way, i replaced a TL WR1043ND v1.0 , not with the same problems...

THnx alot!
Title: Re: Connection loss
Post by: MadLojo on September 30, 2015, 12:22:39 PM
I just got a 868L a couple of days ago. My ISP is the same as it was before, cable.

Installed 2.03 (have revision B) and the connectivity issues are incredible. This is my 4th D-Link router, the more expensive one and never had such a bad experience.

Disabled QOS, disabled firewall options, no filtering. Still get connection issues. For example Netflix, I get maximum 20 minutes of HD streaming  before it has to fill the buffer (never had such problems with previous routers, not even with a slower ISP).

With QOS or firewall activated, the connectivity is even worse.

In the computer, need to use the refresh button from time to time because some pages won't load.

Just talking about LAN connections here. I'll have to put the WLAN connections to the test but it would be the first time I see a router performing better on WLAN than LAN.
Title: Re: Connection loss
Post by: FurryNutz on September 30, 2015, 12:37:17 PM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

  Link> >FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

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. Besure to log into the Admin account on the router.


Quote from: MadLojo on September 30, 2015, 12:22:39 PM
I just got a 868L a couple of days ago. My ISP is the same as it was before, cable.

Installed 2.03 (have revision B) and the connectivity issues are incredible. This is my 4th D-Link router, the more expensive one and never had such a bad experience.

Disabled QOS, disabled firewall options, no filtering. Still get connection issues. For example Netflix, I get maximum 20 minutes of HD streaming  before it has to fill the buffer (never had such problems with previous routers, not even with a slower ISP).

With QOS or firewall activated, the connectivity is even worse.

In the computer, need to use the refresh button from time to time because some pages won't load.

Just talking about LAN connections here. I'll have to put the WLAN connections to the test but it would be the first time I see a router performing better on WLAN than LAN.
Title: Re: Connection loss
Post by: MadLojo on September 30, 2015, 03:55:57 PM
I am putting my sights into a temperature issue. :-X

Just made a measurement of the external case (top part) and got 39º C. The insides must be crispy (working max temperature is listed as 40).

Is there anyway to get internal temp measurements?

In the meanwhile, will have to try to change my whole setup and look for a better ventilated place  ;D
Title: Re: Connection loss
Post by: FurryNutz on October 01, 2015, 07:03:53 AM
You can install a laptop cooler under the router to help provide better ventilation. I recommend using a LT cooler with any wifi router now days. Regardless of designed cooling of the case.  ;)

What is 39C = to in Fahrenheit?  ???

Also be sure to answer the questions. The more we know, the better we can give feedback and suggestions. Thank you.

Title: Re: Connection loss
Post by: MadLojo on October 01, 2015, 07:41:26 AM
Quote from: FurryNutz on October 01, 2015, 07:03:53 AM
You can install a laptop cooler under the router to help provide better ventilation. I recommend using a LT cooler with any wifi router now days. Regardless of designed cooling of the case.  ;)

What is 39C = to in Fahrenheit?  ???

Also be sure to answer the questions. The more we know, the better we can give feedback and suggestions. Thank you.

102.2 degrees in Fahrenheit.

I will try first to see if I can get a better ventilated location, I have big hopes that it is exactly the reason for my issues. Maybe I can do some experiments with some coolers I have around.

I'll come back with results in a few days.
Title: Re: Connection loss
Post by: FurryNutz on October 01, 2015, 07:52:25 AM
I believe that's in the designed temp range. However seems high. I recommend placing a LT cooler at any rate. Temp will degrade electronics over time.

Other factors maybe at play as well. Run thru some of the suggestion and please give feed back. The more you can give feedback the better we and can help you.

Title: Re: Connection loss
Post by: MadLojo on October 02, 2015, 03:15:18 AM
Moved the router to a more open place. Nothing around it in at least 3 inches.

Also raised the router an extra 0.5" to facilitate air circulation for the vents underneath. Which got me a reduction of 33ºF (1º C).

Ran several stress tests last night (dozen devices pulling and stretching the bandwidth) for a few hours.

The temperature is now steady around the 91º F (33ºC), that is 50º F (10º C) over room temperature.

Even turned QOS on and all devices stayed connected, not even a single connection drop.

Still have gaming and firewall tests to do but so far, I am delighted with the performance of the router.

It appears temperature was the reason for my issue. Since the router would disconnect, looks like it is done of purpose, there should be some temp managment chipset/logic. I would suggest dlink to include such events in the Syslog (disconnect due high temp or/and reaching critical temp threshold) or add the information to the GUI in the advanced settings.
Title: Re: Connection loss (RESOLVED)
Post by: FurryNutz on October 02, 2015, 06:49:19 AM
Sounds like you found the problem.

I would recommend using a laptop cooler as additional cooling. Over time heat will degrade electronic parts. Nature of the beast.
Just curious, where was the location of the router placed initially?

The addition of temp logic is a neat idea, however I believe that D-Link designes home class routers for the average user and in most cases, this isn't an issue or cost effective for D-Link. I presume maybe in business class HW may need this as they are used with more HW in there surroundings. I've seen rooms with HW and when the power goes out, batter back up kicks in and the doors have to be opened and fans put in place since the AC isn't on backup. Get very warm fast. Home class routers don't have this issue. Theres only been a couple of cases where heat design was a problem. This is the first case I've seen with the cylinder style case though. Seems like your initial placement for this case was a factor now that you moved it to a different, more open place and it's working better.
Title: Re: Connection loss
Post by: MadLojo on October 02, 2015, 01:49:13 PM
I had the router in a middle shelf and since this router goes up, doesn't lays flat like my previous ones, it meant the top side had just a couple of inches to breath.

It is now on a table with several feet of free cool air up to the ceiling.

The additional cooler could be a factor to consider but the new home of the router is at one of the coolest spots, even in summer.
Title: Re: Connection loss (RESOLVED)
Post by: FurryNutz on October 02, 2015, 01:52:35 PM
Should work well then.

Enjoy.  ;)