[manchesterwireless] Warrington Wireless - interference?

[Andy Gauton]

Getting mixed reports on SuperG. Some say it can be channel configured,
others saying not. Some say it uses 2 full channels, others say 1 and 2
halves. Anyone have the definitive answer?

Andy :)

On Thu, October 27, 2005 10:08, Andy Gauton said:
> 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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