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Topic # 114935 7-Mar-2013 21:55
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Have decided now I dont have other people working in my shed on occasion, I dont need to have a seperate WLAN for it, so decided to move that stuff all onto my house lan on the snap connection. It previously was on the slingshot connection since one of the guys who did some work for me loved to hog data.

Anyway. its going to the shed on a WDS bridge on a pair of cheap micronet 300 meg N routers, all configured up and working nicely passing traffic. Almost as soon as I plug it into the fritzbox network, I get a massive packet storm happening, cant ping the fritz or the internet, but can ping everything else on the lan.

wideshark shows massive blocks of protocol Homeplug AV  60 bytes long, info is MAC Management, central coordination Discovery List Request.

Flood happens for a few seconds, then stops. Not sure if its the storm control on the switches killing it or what, but it is cyclical.

Turn either end of the WDS bridge off, and it stops. I cant see anything coming from the mac addresses of the 2 routers doing the WDS bridge, but that may just be that they dont get to the PC thru the inbetween switches.

The destination of the offending flood packets is AtherosC_00:00:01 - which is pointing to the WDS bridge because that has mac addresses that are showing as AtherosC_otherthings in wireshark.

So should I get some captures and send them off to fritz AU or snap since they sold me the vdsl router?




Richard rich.ms

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  Reply # 776507 7-Mar-2013 22:00
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That sounds a bit like a network loop of some kind...



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  Reply # 776522 7-Mar-2013 22:11
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Thats what I initially thought, im over it for tonight since I am still recovering from a cold or flu or something.

Which reminds me the whole reason I wanted to get the PC in the shed on the house lan was so I had some tunes while I was cleaning up and trying to find the power supply for that damn netgear nas I have to courier. Bugger.




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  Reply # 776524 7-Mar-2013 22:13
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Heh, I know THAT feeling! I'd start a continuous ping, then start unplugging individual devices / connections one at a time until you find the offending device / connection.



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  Reply # 776529 7-Mar-2013 22:17
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Its devinatly a combination of the WDS bridge between the 2 routers and the fritzbox, since I tried it with nothing plugged into the shed end and had the WLAN light going crazy.

I got a pair of $9 routers off PBTECH on their last sale, which claim WDS so I will swap them over at some stage and see how they do. Failing that I will just have to drag a cable thru the conduit again somehow. The one I had came off when I was trying to pull some more cables thru a few months back which is why I bought the AP's to use as bridges. Have a wad of insulation tape in the middle of the conduit so I was going to try waterpressure to blow it out but never got round to it.




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  Reply # 783836 19-Mar-2013 11:03
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Does water run end to end through the conduit? If so, get some builders string and tie a little bit of plastic bag on the end. Then run water down the pipe feeding the string in. You will feel it getting pulled through. I have done this on damaged ducting and it works a treat. Takes a bit of patience though.



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  Reply # 783861 19-Mar-2013 12:16
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I expect it will, its just there is a wad of insulation tape in the middle of it that is stuck quite well. Im regretting only springing for 25mm stuff now.




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