[gentoo-user] WLAN speed either 800KB or 3MB

[gentoo-user] WLAN speed either 800KB or 3MB

[Adam]

Downloads over my 802.1g WLAN seem to always be at either of these two
speeds. Billon ADSL+WLAN router one end, Intel 5100 on the laptop. Any
ideas on how i stop it falling back to the slower speed?

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Volker Armin Hemmann]

On Sonntag 25 April 2010, Adam wrote:
> Downloads over my 802.1g WLAN seem to always be at either of these two
> speeds. Billon ADSL+WLAN router one end, Intel 5100 on the laptop. Any
> ideas on how i stop it falling back to the slower speed?

look for a not contested channel?

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Adam]

>> Downloads over my 802.1g WLAN seem to always be at either of these two
>> speeds. Billon ADSL+WLAN router one end, Intel 5100 on the laptop. Any
>> ideas on how i stop it falling back to the slower speed?
> 
> look for a not contested channel?

I had assumed that congestion would reveal itself as varying speeds, as
expected with multiple users on a shared medium, not step jumps between
the two speeds that i'm seeing... Am I wrong?

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Volker Armin Hemmann]

On Sonntag 25 April 2010, Adam wrote:
> >> Downloads over my 802.1g WLAN seem to always be at either of these two
> >> speeds. Billon ADSL+WLAN router one end, Intel 5100 on the laptop. Any
> >> ideas on how i stop it falling back to the slower speed?
> > 
> > look for a not contested channel?
> 
> I had assumed that congestion would reveal itself as varying speeds, as
> expected with multiple users on a shared medium, not step jumps between
> the two speeds that i'm seeing... Am I wrong?

depends on the situation and the other people's reaction ;)

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Mick]

[-- Attachment #1: Type: Text/Plain, Size: 1065 bytes --]

On Sunday 25 April 2010 12:02:08 Adam wrote:
> >> Downloads over my 802.1g WLAN seem to always be at either of these two
> >> speeds. Billon ADSL+WLAN router one end, Intel 5100 on the laptop. Any
> >> ideas on how i stop it falling back to the slower speed?
> >
> > look for a not contested channel?
> 
> I had assumed that congestion would reveal itself as varying speeds, as
> expected with multiple users on a shared medium, not step jumps between
> the two speeds that i'm seeing... Am I wrong?

Check that you have disabled 802.11b on your router, or you may find that an 
adjacent client who's running 802.11b will drag your router down to 11Mb/s max 
(the actual throughput will be lower).

While you're experiencing the lower downloads you can run iwlist <iface> scan 
to see the speed at which your NIC is connecting at.  If it is 802.11g it'll 
say so:

Bit Rates:54 Mb/s
Extra: Rates (Mb/s): 1 2 5.5 6 9 11 12 18 24 36 48 54

Also, iwconfig <iface> will show you IEEE 802.11g or IEEE 802.11b/g 
accordingly.
-- 
Regards,
Mick

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 198 bytes --]

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Adam]

> Check that you have disabled 802.11b on your router, or you may find that an 
> adjacent client who's running 802.11b will drag your router down to 11Mb/s max 
> (the actual throughput will be lower).

Router is already fixed to g only.

> While you're experiencing the lower downloads you can run iwlist <iface> scan 
> to see the speed at which your NIC is connecting at.  If it is 802.11g it'll 
> say so:

Thanks, i can see my own router (Cell 01) and three others, looks like I
should try channel 13. I can't see the speed shown in the output tho.

wlan0     Scan completed :
          Cell 01 - Address:
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=69/70  Signal level=-41 dBm

          Cell 02 - Address:
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=32/70  Signal level=-78 dBm

          Cell 03 - Address:
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=60/70  Signal level=-50 dBm

          Cell 04 - Address:
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=48/70  Signal level=-62 dBm

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Mick]

[-- Attachment #1: Type: Text/Plain, Size: 1478 bytes --]

On Sunday 25 April 2010 13:19:51 Adam wrote:
> > Check that you have disabled 802.11b on your router, or you may find that
> > an adjacent client who's running 802.11b will drag your router down to
> > 11Mb/s max (the actual throughput will be lower).
> 
> Router is already fixed to g only.
> 
> > While you're experiencing the lower downloads you can run iwlist <iface>
> > scan to see the speed at which your NIC is connecting at.  If it is
> > 802.11g it'll say so:
> 
> Thanks, i can see my own router (Cell 01) and three others, looks like I
> should try channel 13. I can't see the speed shown in the output tho.
> 
> wlan0     Scan completed :
>           Cell 01 - Address:
>                     Channel:1
>                     Frequency:2.412 GHz (Channel 1)
>                     Quality=69/70  Signal level=-41 dBm
> 
>           Cell 02 - Address:
>                     Channel:1
>                     Frequency:2.412 GHz (Channel 1)
>                     Quality=32/70  Signal level=-78 dBm
> 
>           Cell 03 - Address:
>                     Channel:6
>                     Frequency:2.437 GHz (Channel 6)
>                     Quality=60/70  Signal level=-50 dBm
> 
>           Cell 04 - Address:
>                     Channel:6
>                     Frequency:2.437 GHz (Channel 6)
>                     Quality=48/70  Signal level=-62 dBm

Try channels 11 and 13, unless they are already congested.
-- 
Regards,
Mick

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 198 bytes --]

Re: [gentoo-user] WLAN speed either 800KB or 3MB

[Stroller]

On 25 Apr 2010, at 10:07, Adam wrote:

> Downloads over my 802.1g WLAN seem to always be at either of these two
> speeds. Billon ADSL+WLAN router one end, Intel 5100 on the laptop. Any
> ideas on how i stop it falling back to the slower speed?

Move the laptop closer to the access point.

Stroller.