Router keeps crashing

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Lorddave

  • 16441
Router keeps crashing
« on: May 15, 2013, 01:50:09 PM »
So I'm at my wife's parents house and the major problem they have is the router keeps crashing. It's a Jensin Scandinavia airlink 59300.

I've determined this:
The router is the problem.
You can ping the router but not anything else on the network.
The web interface fails to load.
DHCP stops working.
All lights are normal.
The router connects to another special router/modem which is connected to the fiber to Ethernet converter box.

The router crashes more often when more computers are in use. So if my sister-in-law is there using the net, it'll crash every two day while without her, maybe every week.

I'm guessing that something is overloading the router's memory but that's only a guess.
We''ve also tried it with a linksys and the same issues occur.
Thoughts?
I am a terrible person and I am a typical Blowhard Liberal for being wrong about Bom.

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Junker

  • 3784
Re: Router keeps crashing
« Reply #1 on: May 15, 2013, 04:49:38 PM »
I assume you have a done a factory reset.  Consumer grade gateways with routing functions are generally shit, but if you used a different router with the same results, it isn't likely the router.

Isolate the to problem to layer-2 or layer-3.  Disconnect the router from your WAN modem or whatever the ISP provides.  You should be able to plug all computers into the switchports and be able to ping everything on the same subnet as that does not require any routing (layer-3).  What model Linksys is it? You may be better off using that with DD-WRT.  Make sure there isn't anything on the network with a duplicate IP causing a conflict.  The list is exhaustive, need to know a bit more to isolate the issue.  If there are separate subnets for wired and wireless, there could be bridging issues.

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Lorddave

  • 16441
Re: Router keeps crashing
« Reply #2 on: May 16, 2013, 12:52:20 AM »
I assume you have a done a factory reset.  Consumer grade gateways with routing functions are generally shit, but if you used a different router with the same results, it isn't likely the router.

Isolate the to problem to layer-2 or layer-3.  Disconnect the router from your WAN modem or whatever the ISP provides.  You should be able to plug all computers into the switchports and be able to ping everything on the same subnet as that does not require any routing (layer-3).  What model Linksys is it? You may be better off using that with DD-WRT.  Make sure there isn't anything on the network with a duplicate IP causing a conflict.  The list is exhaustive, need to know a bit more to isolate the issue.  If there are separate subnets for wired and wireless, there could be bridging issues.
The house is all wireless, sadly. And it's the only house in range.
IP coflict isn't an issue. All DHCP addresses.
Once the router goes poof, it goes poof.  I can ping the router but that's it. (can even ping it wirelessly).  But can't ping on the same subnet.
I am a terrible person and I am a typical Blowhard Liberal for being wrong about Bom.

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Junker

  • 3784
Re: Router keeps crashing
« Reply #3 on: May 16, 2013, 10:45:13 AM »
I assume you have a done a factory reset.  Consumer grade gateways with routing functions are generally shit, but if you used a different router with the same results, it isn't likely the router.

Isolate the to problem to layer-2 or layer-3.  Disconnect the router from your WAN modem or whatever the ISP provides.  You should be able to plug all computers into the switchports and be able to ping everything on the same subnet as that does not require any routing (layer-3).  What model Linksys is it? You may be better off using that with DD-WRT.  Make sure there isn't anything on the network with a duplicate IP causing a conflict.  The list is exhaustive, need to know a bit more to isolate the issue.  If there are separate subnets for wired and wireless, there could be bridging issues.
The house is all wireless, sadly. And it's the only house in range.
IP coflict isn't an issue. All DHCP addresses.
Once the router goes poof, it goes poof.  I can ping the router but that's it. (can even ping it wirelessly).  But can't ping on the same subnet.

That is very odd.  It sounds like an ARP issue, or could be memory related.  It is consumer grade, so it probably doesn't have CAM/TCAM.  When a node on the same subnet/VLAN sends a frame to the switch, the mac address table is checked, if no corresponding entry is found, the frame should be flooded out of all switchports and the node should reply.  However, if there are no physical nodes and everything is wireless, it could be other issues as well.  Access points are susceptible to all kinds of wireless interference in the 2.4GHz range (assuming it is 2.4GHz).  Maybe try changing the wireless channel; usually channel 1, 6, or 11 on 2.4GHz.

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cmdshft

  • The Elder Ones
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  • swiggity swooty
Re: Router keeps crashing
« Reply #4 on: May 19, 2013, 09:22:08 PM »
Did you try checking the "special" box?

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Lorddave

  • 16441
Re: Router keeps crashing
« Reply #5 on: May 20, 2013, 03:23:27 AM »
Did you try checking the "special" box?
The modem? Or the fiber to Ethernet converter box?
I am a terrible person and I am a typical Blowhard Liberal for being wrong about Bom.

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cmdshft

  • The Elder Ones
  • 13129
  • swiggity swooty
Re: Router keeps crashing
« Reply #6 on: May 26, 2013, 09:50:16 PM »
Nevermind, I misread your post. Buy a DD-WRT compatible router. http://www.dd-wrt.com/site/index

Re: Router keeps crashing
« Reply #7 on: May 27, 2013, 09:28:32 PM »
I am glad that this is resolved.

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Lorddave

  • 16441
Re: Router keeps crashing
« Reply #8 on: May 28, 2013, 03:17:49 AM »
I am glad that this is resolved.
Its not. I just left the country so can't do anything.
I am a terrible person and I am a typical Blowhard Liberal for being wrong about Bom.