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[Trippler]

Hi, i have a DIR-655 router, and am mostly happy with it. When under heavy load though, it crashes and completely shuts down.

A little more information:
The load i am talking about is me uploading files from one computer on the network to another with filezilla over sftp. The connection route goes like this: #1 Pc uploading files-> #2 D-Link switch-> #3 DIR-655 Router-> #4 File server.

The file server has a network card that supports 100MBit which is 12.5MiB/s if my math is correct. So theoretically i wouldn't expect any problems before reaching those speeds. Now to the main problem. If i limit filezilla's speed to 12MiB/s the router will crash fast, after like a minute. When limiting to 5MiB/s it will stay up a few minutes before crashing (i have it at 5MiB/s now and it has crashed 4 times while writing this post).
When limiting to 3MiB/s it is stable almost 15 minutes before crashing.
The acctuall speed output from my computer is hovering around 3000 to < 3200 KiB/s

What happens when it crashes?
All connections get broken. Every other computer on the network gets cut off the net. No connections can be established to computers inside or outside the network. Can't connect to the router controllpanel (192.168.1.1 in my case).

I'm running Hardware version: A4 and Firmware version: 1.31EU.
The router does not seem 'too hot' when this happens, maybe 30ish degrees C.
The files i am uploading are flac files, often a few (like 20)GiB at the time.
I do not have the wireless net activated.
edit: I just flick the power switch off and on to make it work again.

My question: Does anyone know what causes this? Does anyone know how to fix this?

Thanks,
Niklas

[thecreator]

Hi Niklas,

I don't understand the complain? You changed the Router IP Address to 192.168.1.1.

What you can do, is go with the D-Link Router's Default IP Address of 192.168.0.1.

Then see if you can connect after a crash.

[Trippler]

I have now changed router ip address, gonna try to stress test it to see if it still falls.

edit: after about 15 minutes it crashed again. I was not able to connect to router interface (192.168.0.1) or internet after it happened (had to restart it with power switch).

[FurryNutz]

Does this issue occur if you xfer files using Windows Explorer say over a mapped network share connection?

[thecreator]

Hi Niklas,

How are you connected to the Internet? FIOS, DSL, Cable?

You just stated File Server.

Are you certain the Router is crashing or the Switches are crashing.

Remove the Switches and try again.

[Trippler]

I am connected to the internet through DSL, but with a modem from my ISP between the router and the internet. (Router -> Modem -> internet). Since i can only get it working again after i restart the router i assume it is the router that is the problem, and not the switch, i will try to remove the switch though.

edit: FurryNutz: i run linux and dont have a samba server installed (windows network share).
2. It just crashed again when going from #1 Pc -> #2 Router -> #3 Server.

[thecreator]

I am connected to the internet through DSL, but with a modem from my ISP between the router and the internet. (Router -> Modem -> internet). Since i can only get it working again after i restart the router i assume it is the router that is the problem, and not the switch, i will try to remove the switch though.

edit: FurryNutz: i run linux and dont have a samba server installed (windows network share).
2. It just crashed again when going from #1 Pc -> #2 Router -> #3 Server.

Hi Niklas,

What is the Server?

Where is the DSL Modem in the equation?

http://192.168.0.1/Advanced/Network.shtml

Enable Multicast Streams : Have you checked this?

[Trippler]

I have not enabled multicast streams.

Into my house comes a DSL cable. This goes to the DSL modem. This goes to the router.
The router has 3 Network cables doing out from it: One from the DSL modem (the line above), One to the server, One to the switch.
The Switch goes to my main computer and every now and again side-computers.

edit: The server is a linux server running Debian 6.0.

[FurryNutz]

Can you remove the cable going to the server from the router and put in on the switch that your PC is connected too?
How about removing the switch and connecting everything to routers LAN Ports?

[Trippler]

The router is about 15m away from the switch and i only have one cable that is that long so i cant really test changing out the cables.

And i did remove the switch (after suggestion from theCreator), it didnt work, and that was all connected to lan ports.

[FurryNutz]

Ok so we can probably rule out the switch.
Is there a way you can set up a network share on the server that Windows will be able to connect to and try to do a file xfer using Explorer?

Also instead of using SFTP can you switch to just FTP and see if you see any differences?

[thecreator]

I have not enabled multicast streams.

Into my house comes a DSL cable. This goes to the DSL modem. This goes to the router.
The router has 3 Network cables doing out from it: One from the DSL modem (the line above), One to the server, One to the switch.
The Switch goes to my main computer and every now and again side-computers.

edit: The server is a linux server running Debian 6.0.

Hi Niklas,

Have you tried to Enable Multicast Streams to see what effect it would have?

Multicast Streams
    The router uses the IGMP protocol to support efficient multicasting -- transmission of identical content, such as multimedia, from a source to a number of recipients.

    Enable Multicast Streams
        This option must be enabled if any applications on the LAN participate in a multicast group. If you have a multimedia LAN application that is not receiving content as expected, try enabling this option.

[Trippler]

Enabled multicast stream - same crash happened 5 minutes later. Gonna try to set up a windows share now, got a windows box up and running.
Update got the windows share up and running, Uploading about 60GiB of files now, gonna see if it stops.

Ok: wierd thing just happened. When transfeering over the windows share my net went down / crashed like usual. The file transfeer kept going though so i figured it was just choking all my net. Then i stopped the file transfeer, everything was still down, couldn't connect to router or anything i could however resume the file transfeer.

Now im seriously confused as to what is going on.

Edit: This file transfeer went from a windows box to another windows box, both with gigabit cards so this went a lot faster then the normal speeds i can use to upload files (my debian server has a 100Mib card). I now achieved about 42MiB/s and it took about 10 minutes before everything shut down. I let the file transfeer go another 10 minutes before i paused it to check if it would restore my net (which i assumed it would)(I also checked connection speed to see if there were any background transfeers going on, there wasn't and my upload was hovering around 0.3KiB/s), but it didn't restore and after a few minutes i tried to resume the filetransfeer. That worked for some reason but to get the rest of my net up i had to switch the power of the router off / on.

[FurryNutz]

Are you using DHCP auto Ip addressing or Reserved IP addressing on the router for your devices?

[Trippler]

DHCP auto ip, they seem to get the same every time though.