[manchesterwireless] Warrington Wireless - interference?

[Andy Gauton]

Quick Google search shows the BT Voyager capable of SuperG mode.

Just read up on how SuperG is enabled. SuperG bonds with the whole of Ch6,
half of Ch1 and half of Ch11 usually, but the whole bonding channel looks
like it can be altered (therefore effecting overall performance, if moved
away from the 3 separate channels: 1, 6, 11)

Now, I can't confirm whether the BT Voyager is running SuperG mode, but
this might just explain everthing?

Any, thoughts please
Regards
Andy :)

On Thu, October 27, 2005 9:13, Andy Gauton said:
> Hi All,
>
> Warrington Wireless celebrated it's 1yr anniversary of success. Over a 12
> month period, running all 3 routers in WDS mode, they had only a couple of
> minor issues - solved by router reboot, usually remotely using Telnet :)
>
> However, just as we were about to celebrate this achievement in style
> (champagne cooling nicely), the network has been experiencing some major
> problems.
>
> About 2 weeks ago, I (2 hops away from internet facing router) started
> noticing serious bandwidth issues. Usual ADSLGUIDE speed test comes in
> over 2MB, 1MB under load. But recently 15k (yes not a typo!) -> 900k, with
> the occasional 2MB+
>
> Initially thought it was Les (hop2) using the bandwidth, so we
> disconnected his home network. Speed test shot up, but only briefly (5
> mins) and shot back down. At this point we thought water in the system?
> But 2 days later, whole network enjoying 2MB+  .... in heavy rain, so that
> theory out of the window, then back to me getting very poor figures. Then
> Les experiencing problems. Ping times 10ms to 4885ms, and the net went
> down. All routers still connected in WDS but signal noise figures for both
> routers seem to be around the same and quite low - BB (broadband) router
> is x2 distance that Andy -> Les.
>
> Network being:  Andy -> <- Les --> BB due to LOS issues.
>
> I don't have signal / noise figures to hand. Will post well routers back
> in lofts.
>
> Anyway, last night all 3 routers were pulled down and set back to factoy
> defaults and reflashed and "kitchen table" tested. Each pinging 2-3ms.
> Good, so the routers seem OK.
>
> Went round the road with a laptop. We were on Ch6 (changed last night to
> Ch1). Netstumbler picked up a VERY STRONG BT Voyager router signal on Ch8,
> which seems to be in the path of Andy -> Les. Could this be the cause of
> the network going up and down like a yoyo? It's 11g, but for the signal to
> be so strong, I'm wondering whether it's running at 108mb? And I assume
> this would be created by combining frequency from neighbouring channels?
> Why would it effect Les -> BB? I'm guessing due to being in WDS mode the 3
> routers are classed as one entity?
>
> BT Voyager router seems to be always on. I'm guessing when a client is
> switched on, the signal it emits increases. At a guess, I'd say this
> router was new (few weeks old), or a change to it has been made recently.
>
> Les was doing some monitoring yesterday. I had no net access, Les couldn't
> even ping me. Les to Steve was 2MS for about 10hrs, then at about 17.30,
> very poor pings and then network went down and stayed down.
>
> My initial thoughts. BT Voyager owners coming home from work and switching
> wireless PC on? At this point, the signal is so strong it wipes Andy ->
> Les, and then slowly effects Les -> BB
>
> When I say strong signal, no figures on me, but netstumbler real time
> signal graph was covering 75% of the graph!! This was walking the road
> between Andy <-> Les   ... it was looking like a game of tetris in the
> last few seconds before you die.
>
> Apologies for the lack of figures. The routers have been setup as Ch1 now.
> Andy and Les are pinging each other (make of that as you wish!) 2ms
> average. This was at 07.30 this morning. BB router will hopefully be
> connected up later today.... but I haven't got much faith in the network
> staying up....
>
> Figures to be released once testing has been done over the next few days.
>
> Your thoughts please.
>
> Andy :)
>
> --
>
>
>
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