[MLB-WIRELESS] GDW -> GHO

Richard Van Orsouw Richard.Van.Orsouw at optus.com.au
Thu Jun 12 08:42:07 EST 2003


Thanx rowan, I gave that a go this morning and it returned 100% packet loss,
whereas a normal 56 byte ping returns %5-10 loss. I won't bother playing
with any TCP/IP parameters, rather concentrate on efforts to increase
receive level from GDW. 

Cheers,

Richard 

> ----------
> From: 	Rowan Crowe
> Sent: 	Tuesday, 10 June 2003 4:22 PM
> To: 	melbwireless at wireless.org.au
> Subject: 	RE: [MLB-WIRELESS] GDW -> GHO
> 
> On Tue, 10 Jun 2003, Richard Van Orsouw wrote:
> 
> > Ok, must have something to do with sliding windows, and 3 way
> handshakes,
> > must try adjusting ttl timers and the like.
> 
> TCP is fairly robust unless there is a lot of packet loss. I don't think
> latency is your problem, TCP can still push through data at a reasonably
> consistent rate even if it's through an overloaded 56k modem @4000ms
> latency.
> 
> Try something like...
> 
> ping -c 200 -f -s 1460 <destination>
> 
> This will flood 200 packets of size 1460 bytes (plus IP+ICMP header) as
> fast as possible to the other end. Over a wired LAN, there should be 0%
> packet loss. I'm not sure what a typical result would be for a wireless
> connection, but if you have more than about 5-10% loss then TCP will start
> stalling and misbehaving...
> 
> Cheers.
> 
> 
> --
> Rowan Crowe - Melbourne, Australia
> www.camrecord.com  www.camdiscover.com  www.heyasl.com
> www.sensationbot.com
> 
> 
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