[MLB-WIRELESS] GHO-South

[Steven Haigh]

ghomobile is an omni antenna that was placed at the site on a  
separate channel with the idea to help with aiming and reality checks  
when it comes to link establishment.

While it can handle traffic etc, and it is linked to everything else,  
being an omni, it is there for people who can use it but can't use  
either north or south (which is preferred if you can get a stable  
connection to it) or simply to aid aim equipment.

It's on separate channels than the other gear, so the noise factor  
for adjacent operations should be minimal, as well as being polarised  
differently to minimise any interference as much as practical.

On 18/01/2006, at 10:50 PM, rick wrote:

> what is ghomobile
>
> and what is it for and who is it for is it just creating noise that  
> will
> affect the southern link?
>
> Dan Flett wrote:
>> Hi All,
>>
>> As you may all be aware, we currently have three wireless  
>> interfaces up at
>> Node GHO.  They are GHO-North - pointed at the Northern Suburbs,  
>> GHO-Mobile
>> which is an Omnidirectional antenna, and GHO-South, which is  
>> pointed at the
>> Southern Region.
>>
>> At the moment, we in the Southern Region are having trouble even  
>> getting a
>> sniff of the GHO-South interface.  We're not sure if this is a  
>> hardware
>> issue - possibly water damage - or if it is simply due to the  
>> interface
>> being overwhelmed with too many clients.  We need to work out what  
>> the
>> problem is so we can re-establish the link to the Southern Region.
>>
>> I will shortly be "locking-down" GHO-South by restricting access.   
>> I want to
>> see if it is possible to re-establish the link to the Southern  
>> Region by
>> reducing the number of clients on GHO-South.  Sorry to anyone who  
>> this may
>> disadvantage, but the ugly fact is that 802.11b has it's limitations,
>> especially in long-range, outdoor applications.
>>
>> If it is indeed the case that GHO-South is suffering too many  
>> clients, I
>> will look at ways to allow multiple clients - such as RTS/CTS and/or
>> Frottle.  This will require that each client meet certain  
>> conditions to be
>> allowed access.  The general idea is that GHO is supposed to be a  
>> backbone
>> node, not a general-access node - people that access GHO should be  
>> looking
>> to share their GHO connection in their local area.  As new clients  
>> are added
>> I will monitor the impact on throughput.
>>
>> Of course, the short-term result may be that kicking people off  
>> GHO-South
>> may not re-establish the link to the Southern Region.  If this is  
>> the case I
>> will still keep the interface locked-down and try to find the  
>> source of the
>> problem.  If and when we fix the problem I'll look at re- 
>> introducing other
>> clients to the GHO-South interface.
>>
>> Cheers,
>>
>> Dan
>>
>> -------------
>> View my blog:
>> http://freenetjazz.blogspot.com
>>
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>>
>>
>>
>
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--
Steven Haigh

Email: netwiz at crc.id.au
Web: http://www.crc.id.au
Phone: (03) 9017 0597 - 0412 935 897