| SBG6580 wired connection problems Let me summarize:
1. The wireless connection works.
2. The WAN (cable modem part) works.
3. The wired connection is spotty.
Basic topology:
I had the whole house wired for coax and ethernet, and I have a central cabinet in which the SBG6580 sits. All house ports go into a Netgear GS108. In the living room I have several devices so there's another GS108 in there. Same goes for my office.
Two days ago I got home and my office desktop (Win7 x64) couldn't get an IP address. The bedroom desktop (Win7 x64) could, as could my laptop (WinXP x86) through my office switch. Everything in the living room was also fine. After switching wires, ipconfig all over the place, trying a static IP, etc., it suddenly started working. I figured it was some sort of hiccup; this computer (HP xw8600; Win7 x64) always lags in getting an IP address.
Yesterday everything was fine.
Today I am having the same problem. Except my laptop cannot get an IP from the wired connection through the office switch or the living room switch. The bedroom desktop still works fine, as do all the other devices in the living room. I have tried everything, including powering down everything in the cabinet during dinner, and no go. If I assign a static IP to the office desktop and try to ping the router I get "destination host unreachable". I'm dumbfounded. I've tried deleting/recreating dhcp reservations in the SBG6580, etc. Nothing works.
There's zero support from Motorola---and by that I mean the manual is a joke and there's nothing online. If I have to sit on the phone with them I will go buy a modem and router right now and just forget about it.
I have not reset to factory settings yet. I guess I'll go try that now.
My questions:
1. Anyone seen this? Basically, *some* wired connections work, others don't? And it seems that the ones that work are the ones that have had IP addresses through the last few days---like the devices in the living room that are always on. So I don't think this is a physical problem (dead ports or the like).
2. How in the world do you diagnose anything network in windows 7? Even XP, for that matter. |
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| I reset factory settings (via the HTTP interface, not the button) and it didn't do squat for my office desktop.
Then I connected the laptop with a cable directly to the SBG6580, and it got an IP.
At that point I was ready to blame the switch in the cabinet. I restored factory settings and subsequently lost connectivity with the wire directly from the laptop to the SBG6580.
Needless to say, this is intriguing. |
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| Just now I turned on the office desktop and it immediately got an IP; not even the lag as usual. At first Internet access seemed spotty; the first try at speedtest.net gave me a latency error. I ran it again and I got 35 Mbps download and 2 Mbps upload (I'm convinced the ISP caches this). |
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| you do know that the SB6580 does nat don't you?
did you disable bridge mode? |
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| said by ajwees41:you do know that the SB6580 does nat don't you? Don't all routers do NAT? I don't understand what you're implying?
said by ajwees41:did you disable bridge mode? Why would I have it in bridge mode? It's the only router I have. |
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| how is the modom hooked to the switch which port?
»www.ehow.com/how_6917637_do-up-n···es_.html |
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| I don't think any modern devices have uplink ports due to auto-MDIX.
Physically there is no distinction between any ports on the GS108 or the SBG6580. |
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 NickPurveyor of common sensePremium,VIP,MVM
join:2000-10-29
Smithtown, NY | reply to pelesl
SBG6580 has several different modes of operation actually. It can be set to do bridging or act as a gateway (In the lab I do it with snmp but then again I provide the configuration file and provisioning services to it). If it's doing bridging only then you will need to have multiple IP addresses or another router behind the SBG6580.
If it's set to gateway then you should be able to get 192.x addressing from it for all of your devices.
What you're describing sounds like you actually have it set to gateway mode. So your setup should work fine (I'm assuming at least 2 or 3 devices can get an IP) Also since you say everything else works fine you may have a problem with your computer more than the SBG6580.
--
-Stupidity, like hydrogen, is one of the basic building blocks of the Universe.
-Insanity: doing the same thing over and over again and expecting different results.
Misc |
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| reply to Nick
Re: SBG6580 wired connection problems Hey guys, I've got a similar problem. All of a sudden (in mid-Netflix), my wired connections crapped out. After reseting the sb6580, the wireless works, but none of my wired connections are working. What the hell? Anyone have any ideas? I've tried reseting about 30 times. |
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