Fragmentation

anyone know what the fragmentation / RTS CTS settings are useful for in WIFI
land?

Actually i'm asking because I'm having frequent dropouts at public access
points my wireless card (MSI USB6823) defaults to 2305 Fragmentation and
RTS/CTS...

is there an optimal way to determine a good setting?

is there anything else I can fiddle around with to get a more stable
connection?

on with threshold: allows you set the control of which packets (over a
certain size, i.e. the threshold) are announced and cleared to send.
Collisions affect larger packets more than smaller packets, setting the
RTS/CTS threshold to work only when a node wishes to send packets over a
certain size.
The setting will optimise the throughput of your WLAN while preventing
hidden node problems

M.

"F..." <(E-Mail Removed)> wrote in message
news:Lsmpb.42389$(E-Mail Removed)...
> anyone know what the fragmentation / RTS CTS settings are useful for in
WIFI
> land?
>
> Actually i'm asking because I'm having frequent dropouts at public access
> points my wireless card (MSI USB6823) defaults to 2305 Fragmentation and
> RTS/CTS...
>
> is there an optimal way to determine a good setting?
>
> is there anything else I can fiddle around with to get a more stable
> connection?
>
>

try to leave default...

--
robee


"F..." <(E-Mail Removed)> wrote in message
news:Lsmpb.42389$(E-Mail Removed)...
> anyone know what the fragmentation / RTS CTS settings are useful for in
WIFI
> land?
>
> Actually i'm asking because I'm having frequent dropouts at public access
> points my wireless card (MSI USB6823) defaults to 2305 Fragmentation and
> RTS/CTS...
>
> is there an optimal way to determine a good setting?
>
> is there anything else I can fiddle around with to get a more stable
> connection?
>
>

The threshold is the packet length at which the client starts using RTS
(Request to Send) messages to reserve the network for itself. When it gets a
CTS (Clear to Send) from the AP, it sends. This scheme co-ordinates access
to the network and avoids collisions when you are sending and receiving
long packets. There is overhead in sending CTS and waiting for RTS, so it
actually degrades performance for shorter packets. Also, if there are
"hidden nodes" (stations that don't have line-of-sight to you, or are
blocked by walls or other obstructions) they will not hear your RTS and so
may transmit while you are waiting for CTS. This situation is not uncommon
in hotspots, which are not designed to optimize LOS between clients.

Also, if you lower your threshold, even if it does improve your performance
a bit, it may degrade everyone else's performance.


"F..." <(E-Mail Removed)> wrote in message
news:Lsmpb.42389$(E-Mail Removed)...
> anyone know what the fragmentation / RTS CTS settings are useful for in
WIFI
> land?
>
> Actually i'm asking because I'm having frequent dropouts at public access
> points my wireless card (MSI USB6823) defaults to 2305 Fragmentation and
> RTS/CTS...
>
> is there an optimal way to determine a good setting?
>
> is there anything else I can fiddle around with to get a more stable
> connection?
>
>

Any suggestions on what to set it to if Your experiencing dropouts?

basically you would get connected to the ap but it will randomly disconnect
you

Actually, I doubt that RTS/CTS will fix your problem. Your default setting
is average, a little more than half the maximum payload size. If you're
disassociating from the network frequently, then you have signal strength or
interference problems. That's not unusual at hotspots. I hate to say this,
but the solution will probably be to move around until you find a place
where you get reliable connection. Public hotspots were not designed to be
wifi friendly, and have lots of obstructions that can mess up the net. Plus,
unless they paid someone to do a professional install, I doubt if much
thought was put into router or antenna placement. You can bet the router is
somewhere where the public can't get at it, so getting closer to the bar or
the service counter is probably not a bad idea.

"F..." <(E-Mail Removed)> wrote in message
news:ZmIpb.43857$(E-Mail Removed)...
> Any suggestions on what to set it to if Your experiencing dropouts?
>
> basically you would get connected to the ap but it will randomly
disconnect
> you
>
>

Could it be my wifi (USB version) adaptor I've been noticing that alot of
people with the built in wifi don't have the same problem when we're sitting
right next to each other...

Also at home with my home wifi dropouts never happen.


"gary" <(E-Mail Removed)> wrote in message
news:UFIpb.2432$(E-Mail Removed) ...
> Actually, I doubt that RTS/CTS will fix your problem. Your default setting
> is average, a little more than half the maximum payload size. If you're
> disassociating from the network frequently, then you have signal strength
or
> interference problems. That's not unusual at hotspots. I hate to say this,
> but the solution will probably be to move around until you find a place
> where you get reliable connection. Public hotspots were not designed to be
> wifi friendly, and have lots of obstructions that can mess up the net.
Plus,
> unless they paid someone to do a professional install, I doubt if much
> thought was put into router or antenna placement. You can bet the router
is
> somewhere where the public can't get at it, so getting closer to the bar
or
> the service counter is probably not a bad idea.
>
> "F..." <(E-Mail Removed)> wrote in message
> news:ZmIpb.43857$(E-Mail Removed)...
> > Any suggestions on what to set it to if Your experiencing dropouts?
> >
> > basically you would get connected to the ap but it will randomly
> disconnect
> > you
> >
> >
>
>

Sure, your adapter could make a bad situation worse. Maybe the guy next to
you at the hotspot has an adapter with a more sensitive receiver, or a
diversity antenna. At home, your adapter presumably has no other signals to
interfere, and you have good line of sight, so it works okay.

"F..." <(E-Mail Removed)> wrote in message
news:%80qb.45973$(E-Mail Removed)...
> Could it be my wifi (USB version) adaptor I've been noticing that alot of
> people with the built in wifi don't have the same problem when we're
sitting
> right next to each other...
>
> Also at home with my home wifi dropouts never happen.
>
>
> "gary" <(E-Mail Removed)> wrote in message
> news:UFIpb.2432$(E-Mail Removed) ...
> > Actually, I doubt that RTS/CTS will fix your problem. Your default
setting
> > is average, a little more than half the maximum payload size. If you're
> > disassociating from the network frequently, then you have signal
strength
> or
> > interference problems. That's not unusual at hotspots. I hate to say
this,
> > but the solution will probably be to move around until you find a place
> > where you get reliable connection. Public hotspots were not designed to
be
> > wifi friendly, and have lots of obstructions that can mess up the net.
> Plus,
> > unless they paid someone to do a professional install, I doubt if much
> > thought was put into router or antenna placement. You can bet the router
> is
> > somewhere where the public can't get at it, so getting closer to the bar
> or
> > the service counter is probably not a bad idea.
> >
> > "F..." <(E-Mail Removed)> wrote in message
> > news:ZmIpb.43857$(E-Mail Removed)...
> > > Any suggestions on what to set it to if Your experiencing dropouts?
> > >
> > > basically you would get connected to the ap but it will randomly
> > disconnect
> > > you
> > >
> > >
> >
> >
>
>