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All Forums > Tech Talk > Tech Talk Forum Page 54 > Cable modems and "LAN" LED---advice
AuthorPost
driven
Member


73 Posts
9/03
Posted - Sep 29 2004 : 1:04AM
i have a cable internet connection and often do computer gaming and I have a problem where my connection cuts out at times. When this happens while I am gaming I experience it as lag. Simultaneous with this "lag out" the "LAN" labeled LED (light emitting diode) blinks out on my cable modem, which apparently means that a connection from my modem to the NIC in my computer can't be found (as if I had disconnected the cable running between them). This only happens sometimes, but sometimes when it does it happens for several minutes. Othertimes just a few blinks (cut outs) and it's solid again.

Anybody know if this is normal? Do you have this happen with your cable modem connection at times? Is this a sign of a shoddy NIC or cable modem? I got high quality cable connecting them. i got a com21 doxport modem and a 3com NIC. Why is this happening?

VStampede
Member

82 Posts
3/04
Posted - Sep 29 2004 : 6:51PM
Is it normal ? I couldn't know for sure, but I do know that it can happen for a few secs, but for several minutes... never heard of that.

The few blinks have happened to me once so far (been only a week since I have DSL).

Maybe someone else might have a better answer to this.

picman
Senior Member

Nothing says I love you so much as a tongue in the ass.
2884 Posts
1/03
Posted - Sep 29 2004 : 10:13PM
Maybe it's because the cable connection is a shared resource. If you're on a heavily used node your bandwidth decreases and that might be what's causing connection problems. Cable is faster than DSL when it's running optimally, but DSL is guaranteed bandwidth.
jamesn
Senior Member

Cambridge, MA
750 Posts
1/04
Posted - Sep 30 2004 : 12:00AM
in terms of leds, check out http://www.neotechcc.org/cablemodem.htm
and http://www.cbn.net.id/cbnweb/faq-3.asp?lang=en&fileid=81
for info on com21 modems. i'd pay particular attention to make sure that your signals are within the db ranges they should be via-the diagnostic page.

there's not much info about that modem, 3com makes some of the best affordable networking products out there though. i'd get a motorola if you're in the market for a modem soon.

there's always the chance it's your cat-5 needing replacement or that it's just stressful beyond what the connection is stable at. then there's always a chance some 14-year old in the ukraine is being sketchy, maybe try out etherreal and see what's really going on with your network if your isp won't freak. routers claiming stateful packet inspection under 300-dollars are useless without adding 2 hubs to either side of them, so don't assume that's going to get rid of nasty stuff.

driven
Member

73 Posts
9/03
Posted - Sep 30 2004 : 11:41PM
i bought a high end cat-5. beyond what I think my puter really needs. So I'm hoping it's not that that's causing it.

about the modem, you recommended a motorola: you think the Motorola SURFboard Cable Modem is a better modem than the the Com21 doxport? better like it will be faster or more reliable or something (not blink the LAN out)?

 
jamesn
Senior Member

Cambridge, MA
750 Posts
1/04
Posted - Oct 1 2004 : 11:53PM
the 5100's have a nice diagnostic page and are probably considered the most reliable modem out there. they also are supported by most cable companies and should run under 70 dollars-just check to see if it's supported and make sure to write down everything important before you swap them and you may have to notify your provider about a new MAC. unless you uncap it, your cable company dictates the maximum speed of the modem, but some are more stable than others. i tossed my d-link for the surfboard and it's rock-solid.

as long as you're under 100m and avoid kinks and frayed cable, you should be fine there.

etherreal is definetly worth playing around with, at least it'll let you know what your hard/software firewall fails at blocking.

driven
Member

73 Posts
9/03
Posted - Oct 2 2004 : 9:41AM
hmm. i think i may of solved the problem. i had a cat-5 running from my modem to my UPS, then another cat-5 running from my UPS to my puter. I changed it so the modem cat-5 runs directly to my puter (bypassing the UPS) and for the last couple days the LAN LED has been rock solid. Hopefully it will stay that way and running it thru the UPS is what was causing the blink outs.
All Forums > Tech Talk > Tech Talk Forum Page 54Cable modems and "LAN" LED---advice

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