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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-855L => Topic started by: judolphin on December 14, 2013, 09:06:02 AM

Title: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: judolphin on December 14, 2013, 09:06:02 AM
Title describes the problem.

Every 2-3 days, all wired ports on my DIR-855L lose Internet access. When this happens, the wired clients still have local network access.

Funny enough, wireless clients still have Internet after the wired clients lose it.

The problem temporarily goes away when I power cycle the device, but again, it has to happen every two days.

I don't want to get a smart power switch because I can buy a new switch that doesn't have this problem for cheaper.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on December 14, 2013, 10:14:48 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.

So wifi clients still have access to router and internet however LAN wired doesnt...I would turn OFF ALL LAN wired clients and test with just one client at a time or gradate them...

You don't have any filters set or anything to prohibit LAN computers from connecting do you?

Swap LAN cables to be sure between router and clients.
Ensure LAN NIC drivers are up to date on each client.
3rd Party Security Software Configurations
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on May 02, 2014, 08:44:30 AM
Any status on this ?   ???

Title describes the problem.

Every 2-3 days, all wired ports on my DIR-855L lose Internet access. When this happens, the wired clients still have local network access.

Funny enough, wireless clients still have Internet after the wired clients lose it.

The problem temporarily goes away when I power cycle the device, but again, it has to happen every two days.

I don't want to get a smart power switch because I can buy a new switch that doesn't have this problem for cheaper.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: whatthbuck on June 02, 2014, 06:38:04 PM
I'm having this problem as well. 

I have a cable modem. Motorola Surfboard SB6121
15mbps Down, 2 mbps Up

My router is FW 1.03 Hardware A1
DIR-855L
Located in Indiana

I'll try to go through and make these changes.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on June 02, 2014, 06:51:38 PM
Let us know...

Thanks.

I'm having this problem as well. 

I have a cable modem. Motorola Surfboard SB6121
15mbps Down, 2 mbps Up

My router is FW 1.03 Hardware A1
DIR-855L
Located in Indiana

I'll try to go through and make these changes.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on June 04, 2014, 08:01:06 PM
Any status on this?

I'm having this problem as well. 

I have a cable modem. Motorola Surfboard SB6121
15mbps Down, 2 mbps Up

My router is FW 1.03 Hardware A1
DIR-855L
Located in Indiana

I'll try to go through and make these changes.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: whatthbuck on June 18, 2014, 10:46:41 AM
I tried everything you asked an it has not fixed the issue.  working on RMA now with vendor.  i'm switching to another brand.

Thanks for all your help.

Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on June 18, 2014, 10:52:34 AM
Good Luck.

I tried everything you asked an it has not fixed the issue.  working on RMA now with vendor.  i'm switching to another brand.

Thanks for all your help.


Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: whatthbuck on June 18, 2014, 11:09:49 AM
I would really like to keep it as I like the features and speed when it works.  Any other tips.

it takes about 5 days for the wired ports to fail.  I have my xbox 360, a desktop pc, NAS, and ooma attached.  when this fails incoming audio on my phone stops working about 15 sec into phone calls, outgoing continues to work.  desktop is unable to surf the internet but i can browse the NAS files. 

Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on June 18, 2014, 11:15:06 AM
It would be helpful to us if you could run thru and give answer to my post to the OP. Any and all information there would help us get a better idea of your situation and helps us give better feedback and suggestions. Please copy and paste.

One thing I would do is to use this and reload firmware code using this process:
FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Are you using CAT 6 LAN cables? Have you swapped out to test?

You can take the router to a different location, i.e. friend, or familys place and see if problem follows.

Any external network switching being used? Disconnect them while testing.

Later on, Maybe someone can review your router settings with you using Link> teamviewer (http://www.teamviewer.com) if your interested. Its safe and secure.


I would really like to keep it as i like the features and speed when it works.  Any other tips.


Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: whatthbuck on June 18, 2014, 11:23:57 AM
ok I'll try and start this tonight.

I will reflash the firmware leave everything default and see if it breaks.  This is extremely frustrating.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on June 18, 2014, 11:30:15 AM
Understand. We are here to help figure it out with you. It could be just a faulty unit. We haven't seen much of any of problems like this so it just could be one bad unit. However, lets try what I suggested in meantime, post and give some feed back on the questions presented when you can. We'll figure it out one way or another.  ;)


What region are you located?
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: alback on September 04, 2014, 03:43:23 AM
I am having a similar issue.  I have been using this router for about 6 months.  In the last couple of weeks, it has started to drop the Internet.  At first random, now multiple times every day.  The green Internet light stays on, the lights on my cable router do not change.

I contacted my ISP - who checked their router and did not see any loss of signal at their end.  They could view their data and see that I had reset their router several times along with the D-Link 855L.  They suggested to reset the 855L only to isolate the issue.  I did this and it would re-connect with every power off reset.... but only for a half hour or so.

Hardware A1
Firmware was 1.00 until a few days ago, then 1.02
Download speed 12.5 M/Bs, Upload 1890 K/bs (today using 655)

I read this thread to ensure my settings followed your suggestions - still dropping. 

I kept my older D-Link 655, and replaced the 855L - it has only been 12 hours, but so far the internet has not dropped.

I suspect the 855L has become faulty but I do not understand why.

Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on September 04, 2014, 07:12:16 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

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


Internet Service Provider and Modem Configurations

What Rev model is the 655 and what FW version is currently loaded on it?

I am having a similar issue.  I have been using this router for about 6 months.  In the last couple of weeks, it has started to drop the Internet.  At first random, now multiple times every day.  The green Internet light stays on, the lights on my cable router do not change.

I contacted my ISP - who checked their router and did not see any loss of signal at their end.  They could view their data and see that I had reset their router several times along with the D-Link 855L.  They suggested to reset the 855L only to isolate the issue.  I did this and it would re-connect with every power off reset.... but only for a half hour or so.

Hardware A1
Firmware was 1.00 until a few days ago, then 1.02
Download speed 12.5 M/Bs, Upload 1890 K/bs (today using 655)

I read this thread to ensure my settings followed your suggestions - still dropping.  

I kept my older D-Link 655, and replaced the 855L - it has only been 12 hours, but so far the internet has not dropped.

I suspect the 855L has become faulty but I do not understand why.


Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: alback on September 04, 2014, 08:10:24 AM
I am located in Ontario Canada,  Cable service, Rogers ISP.

All computers use static addressing in modem, Windows settings on each computer is IP automatic assigned.
Speeds as noted earlier 12.5M down 1800kb up.
Modem is Dlink 855L, A1, original firmware 1.00
Using Cat 6 cable - same cable used for the past 6 months - problem started about 2 weeks ago.  Progressively gotten worse.  Original firmware was 1.0, now 1.02 - no factory reset done before or after firmware update.

MTU set at 1500.

D-link reconnects to internet after each power-off, then disconnects again, about 1/2 hr later.

I hope this answers your questions.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on September 04, 2014, 08:17:14 AM
What ISP Modem Mfr. and model # do you have?

What is the WAN Ports speed set for now on the 855L? Try 100 or 1000Mb if your ISP modem supports 1000Mb on the connector.

For doing any FW updates, please do a factory reset, send the FW file and let it process then factory reset the router once more and set up from scratch.

There is v1.03 FW for the 855L now...

Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: alback on September 04, 2014, 10:31:14 AM
My modem is SMCD3GN in bridge mode only.
Yes speed was set at 1000Mb

I have done a factory reset and re-installed the D-Link 855L from scratch.  Annoying that the 855L requires so many reboots that take 45 secs each.  Reboots on 655 were only about 10 seconds.

Are there are benefits to updating FW 1.02 to 1.03 regarding this issue?

Using it now, still 1.02 FW.

BTW, the D-link 655 did not lose any internet connections.

I will advise within a day to see if this has fixed the problem.

Thank you for your help.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on September 04, 2014, 10:49:05 AM
Reboot times go up with new features with in the router and the way the HW is designed. Not much can be done about that. I usually can access the web page about 5-10 seconds before I see the UI timer run out. DIR 655 series didn't have much features and remember, the 855L is dual band, the 655 is 2.4Ghz only. So it doesn't have to load all the extra stuff that the 855L has.  ::)

There is a security enhancement in v1.03. Not sure if anything related to disconnects.

I recommend that you have your ISP check the cabling going to the ISP modem, check signal levels going to the ISP modem. For DSL or Fiber service lines, ensure that the ISP is using good working phone or cable lines to the DSL modem and that the phone lines are filtered correctly. For cable Internet, RG-6 coaxial cable is needed, not RG-59. Check for t.v. line splitters and remove them as they can introduce noise on the line and lower the signal going to the ISP modem. I recommend having the ISP service physically check the lines going from the out side to the ISP modem. Connecting to the ISP modem could result in a false positive as the signal to the modem could be just enough to that point then adding on a router, could see problems. The router operation is dependent upon getting good data flow from the ISP modem and the modem is dependent upon getting good signal from the ISP Service.

I'd look into a new modem as well. This model is a few years old and has draft wireless support that probably wasnt' certified. I know you have it in bridge mode however doesn't mean other items on this modem could be a cause and if the DIR 655 is from same era with same draft N design that you never updated FW on, probably works well however the 855L is new generation with certifications and newer design and networking.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: alback on September 04, 2014, 12:19:09 PM
The 855L failed its connection once again.  I really believe it must be defective.

1. The 655 has not failed even once - same cables, coaxial set-up, SMC modem etc.  I did an upload download speed test today, there is zero performance benefit for download or upload using the 855L over the 655.  Its wireless is considerably improved over the 655 but I have an Asus AC68U in AP mode to supply my home with wireless, direct wired into 855L or now 655.
2. The 855L worked fine for approx 6 months, until a couple of weeks ago, it has since gotten progressively worse.
3. Your comments on SMC are correct, except if there were compatibility issues, I would have realized them before 6 months use.  I also see by this thread that this problem with the internet dropping has happened to other 855L router users.


Once again, thank you for your help, I appreciate your time and quick responses.  I am going to contact D-link for a return.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on September 04, 2014, 12:32:38 PM
Sounds good. Ask for level 2 support and for an RMA.

Let us know how it goes.

Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on September 22, 2014, 09:08:06 AM
Any status on this?  ???

The 855L failed its connection once again.  I really believe it must be defective.

1. The 655 has not failed even once - same cables, coaxial set-up, SMC modem etc.  I did an upload download speed test today, there is zero performance benefit for download or upload using the 855L over the 655.  Its wireless is considerably improved over the 655 but I have an Asus AC68U in AP mode to supply my home with wireless, direct wired into 855L or now 655.
2. The 855L worked fine for approx 6 months, until a couple of weeks ago, it has since gotten progressively worse.
3. Your comments on SMC are correct, except if there were compatibility issues, I would have realized them before 6 months use.  I also see by this thread that this problem with the internet dropping has happened to other 855L router users.


Once again, thank you for your help, I appreciate your time and quick responses.  I am going to contact D-link for a return.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: pctech4747 on November 12, 2014, 12:16:07 PM
nooo I just started having this problem.  I bought my router refurbished from ebay.  probably from the guy that never responded back lol. 

My router was working fine until last few days.  Wireless works fine, my hdhomerun which is wired was working fine.  Had to reboot router cause my main wired pc wasnt responding, not even to my modem 192.168.100.1 .   modem logs not showing any problem when this outage occured. 

wierd issue.   I rebooted the router and its working again.

Getting to the point of ditching this router for my old one.  I need N wireless for gamestream. 

I was hoping for a solution to the problem here. 
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on November 12, 2014, 12:54:34 PM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)





Internet Service Provider and Modem Configurations

nooo I just started having this problem.  I bought my router refurbished from ebay.  probably from the guy that never responded back lol. 

My router was working fine until last few days.  Wireless works fine, my hdhomerun which is wired was working fine.  Had to reboot router cause my main wired pc wasnt responding, not even to my modem 192.168.100.1 .   modem logs not showing any problem when this outage occured. 

wierd issue.   I rebooted the router and its working again.

Getting to the point of ditching this router for my old one.  I need N wireless for gamestream. 

I was hoping for a solution to the problem here.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on November 12, 2014, 12:55:46 PM
Any status on this?  ???

The 855L failed its connection once again.  I really believe it must be defective.

1. The 655 has not failed even once - same cables, coaxial set-up, SMC modem etc.  I did an upload download speed test today, there is zero performance benefit for download or upload using the 855L over the 655.  Its wireless is considerably improved over the 655 but I have an Asus AC68U in AP mode to supply my home with wireless, direct wired into 855L or now 655.
2. The 855L worked fine for approx 6 months, until a couple of weeks ago, it has since gotten progressively worse.
3. Your comments on SMC are correct, except if there were compatibility issues, I would have realized them before 6 months use.  I also see by this thread that this problem with the internet dropping has happened to other 855L router users.


Once again, thank you for your help, I appreciate your time and quick responses.  I am going to contact D-link for a return.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on November 25, 2014, 10:19:47 AM
Any status on this?  ???

nooo I just started having this problem.  I bought my router refurbished from ebay.  probably from the guy that never responded back lol. 

My router was working fine until last few days.  Wireless works fine, my hdhomerun which is wired was working fine.  Had to reboot router cause my main wired pc wasnt responding, not even to my modem 192.168.100.1 .   modem logs not showing any problem when this outage occured. 

wierd issue.   I rebooted the router and its working again.

Getting to the point of ditching this router for my old one.  I need N wireless for gamestream. 

I was hoping for a solution to the problem here.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: jayc0523 on January 31, 2015, 11:33:23 PM
I do not think this is just a single incident because my unit ALSO have the same problem.
However, my unit's issue is more server. The LAN port drop signal very often on some days (more than once per hour.) I have to restart the router constantly for it to work properly. My wireless devices used to have the same problem too but upgrading the firmware was able to solve the issue.
I have been using D-link routers for yeas and was happy with their quality until now.
Very disappointed at the Quality of my DIR-855L.
Going through RMA right now and might consider other brands for my next router.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on February 01, 2015, 11:52:24 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

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

Internet Service Provider and Modem Configurations

I do not think this is just a single incident because my unit ALSO have the same problem.
However, my unit's issue is more server. The LAN port drop signal very often on some days (more than once per hour.) I have to restart the router constantly for it to work properly. My wireless devices used to have the same problem too but upgrading the firmware was able to solve the issue.
I have been using D-link routers for yeas and was happy with their quality until now.
Very disappointed at the Quality of my DIR-855L.
Going through RMA right now and might consider other brands for my next router.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: WhippyLizard on April 11, 2015, 02:18:36 AM
I have the exact same issue, after two days the wired ports on the device die, a reboot fixes it for the next 48 hours then they die again, reboot fixes it, die. repeat.

Hardware Version: A1 (DIR-855L)
Firmware: 1.03 , 07, May, 2014
North America
Factory Reset: No on original 1.0 firmware as it was new, YES on 1.03

Working before?: No idea item was new and firmware updated for security features.

ISP: WoW Cable
Modem: Self owned, Motorola Surfboard SB6121
IP is always Dynamic
Upspeed: 5Mbps
Down speed: 110Mbps
CAT6 is in use
MTU set according to ISP (AUTO, 1500)
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on April 13, 2015, 06:54:43 AM
Lets try a reload of the FW code and see if it does anything using the following process:
>FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Factory reset, send the file, the reset once more then set up from scratch. Don't load any saved config files.


I have the exact same issue, after two days the wired ports on the device die, a reboot fixes it for the next 48 hours then they die again, reboot fixes it, die. repeat.

Hardware Version: A1 (DIR-855L)
Firmware: 1.03 , 07, May, 2014
North America
Factory Reset: No on original 1.0 firmware as it was new, YES on 1.03

Working before?: No idea item was new and firmware updated for security features.

ISP: WoW Cable
Modem: Self owned, Motorola Surfboard SB6121
IP is always Dynamic
Upspeed: 5Mbps
Down speed: 110Mbps
CAT6 is in use
MTU set according to ISP (AUTO, 1500)
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on April 13, 2015, 06:55:20 AM
Any status on this?

I do not think this is just a single incident because my unit ALSO have the same problem.
However, my unit's issue is more server. The LAN port drop signal very often on some days (more than once per hour.) I have to restart the router constantly for it to work properly. My wireless devices used to have the same problem too but upgrading the firmware was able to solve the issue.
I have been using D-link routers for yeas and was happy with their quality until now.
Very disappointed at the Quality of my DIR-855L.
Going through RMA right now and might consider other brands for my next router.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: WhippyLizard on April 13, 2015, 02:10:05 PM
Upon doing this, when the router performs it's initial setup the following is displayed on the last page:
The input data has illegal programming language!

The router allows me to log in though and I will attempt to use it for the next two days and let you know what happens if anything.


Lets try a reload of the FW code and see if it does anything using the following process:
>FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Factory reset, send the file, the reset once more then set up from scratch. Don't load any saved config files.

  • Check cable between Modem and Router, swap out to be sure. Link> Cat6 is recommended. (http://en.wikipedia.org/wiki/CAT6)
  • WAN Port Speed set to Auto or specific speed? Some newer ISP modems support 1000Mb so manually setting to Gb speeds can be supported by the router. Advanced/Advanced Networking/WAN Port Speed

I have the exact same issue, after two days the wired ports on the device die, a reboot fixes it for the next 48 hours then they die again, reboot fixes it, die. repeat.

Hardware Version: A1 (DIR-855L)
Firmware: 1.03 , 07, May, 2014
North America
Factory Reset: No on original 1.0 firmware as it was new, YES on 1.03

Working before?: No idea item was new and firmware updated for security features.

ISP: WoW Cable
Modem: Self owned, Motorola Surfboard SB6121
IP is always Dynamic
Upspeed: 5Mbps
Down speed: 110Mbps
CAT6 is in use
MTU set according to ISP (AUTO, 1500)
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on April 13, 2015, 02:15:30 PM
Can you do the same process accept for use the prior version of FW? Or the shipping FW thats on the web site? Try v1.00 and see if the input data message still appears. Please use IE or FF with browswer add-ons disabled.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: WhippyLizard on April 19, 2015, 12:18:48 AM
The reinstall failed with the same issue, the wired ports disable after 2/3 days.
later today I will install 1.00 and report back what happens.


Can you do the same process accept for use the prior version of FW? Or the shipping FW thats on the web site? Try v1.00 and see if the input data message still appears. Please use IE or FF with browswer add-ons disabled.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on April 19, 2015, 10:43:47 AM
Let us now now v1.00 does for you, if it still happens, I recommend that you phone contact your regional D-Link support office and ask for help and information regarding this. We find that phone contact has better immediate results over using email.
Let us know how it goes please.

The reinstall failed with the same issue, the wired ports disable after 2/3 days.
later today I will install 1.00 and report back what happens.


Can you do the same process accept for use the prior version of FW? Or the shipping FW thats on the web site? Try v1.00 and see if the input data message still appears. Please use IE or FF with browswer add-ons disabled.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: WhippyLizard on April 25, 2015, 02:19:30 AM
I reverted to version 1.01 before I attempted the stock firmware.

1.01 has been running fine for a week+ now. I have had no disconnecting issues with the hardwired ports now. There appears to be an issue with the Beta firmware for the device. Since the beta for the device was released a some time ago, any chance that the technicians over there can look at the firmware for this router and fix whatever may be causing the wired ports to disable after a few days?


Let us now now v1.00 does for you, if it still happens, I recommend that you phone contact your regional D-Link support office and ask for help and information regarding this. We find that phone contact has better immediate results over using email.
Let us know how it goes please.

The reinstall failed with the same issue, the wired ports disable after 2/3 days.
later today I will install 1.00 and report back what happens.


Can you do the same process accept for use the prior version of FW? Or the shipping FW thats on the web site? Try v1.00 and see if the input data message still appears. Please use IE or FF with browswer add-ons disabled.
Title: Re: DIR-855L *wired* ports lose Internet but not local network. Wireless is fine.
Post by: FurryNutz on April 25, 2015, 02:43:36 PM
Ok. I'll forward this to D-Link and have them review this...Keep us posted if you notice anything else or if it keeps working well.