[plug] Wireless-N router for faster wireless....

[William Kenworthy]

You use google just the same as I can ... or can you?

BillK

On Tue, 2009-01-20 at 16:29 +1100, Daniel Pittman wrote:
> William Kenworthy <billk at iinet.net.au> writes:
> > On Tue, 2009-01-20 at 15:27 +1100, Daniel Pittman wrote:
> >> William Kenworthy <billk at iinet.net.au> writes:
> >> 
> >> > Yes, you have to separate the bandwidth - if you have two groups of
> >> > machines on different channels, you will need to bridge them - I think
> >> > upnp needs to be on the same subnet.  2nd cheap access point may be
> >> > the way to go?
> >> >
> >> > Also, if you can design it to be a totally isolated link, you might be
> >> > able to turn off WPA and gain quite a lot of bandwidth.
> >> 
> >> What?  Can you back up that assertion?  WPA should have *no* effect on
> >> available bandwidth, in general.
> >> 
> >> Some specific hardware may not perform well, but that is more an issue
> >> with the encryption algorithm than WPA itself — especially since TKIP
> >> uses the WEP algorithm, rekeyed automatically.
> >> 
> >> Specifically, some hardware may fall back to software / firmware when
> >> using AES encryption with WPA2, but none of it should show any
> >> significant degradation when running TKIP.
> >
> > Encryption has overhead which can drastically cut into the available
> > throughput.
> 
> Do you mean on the NIC or as part of the "wire" 802.11 protocol?
> 
> > Further, cheaper 802.11 devices (mainly older ones Ive looked at) can
> > get cpu bound (or results that look like that) that also seem to cut
> > throughput.
> 
> Using TKIP or AES encryption?  WPA1, WPA2, personal or enterprise?
> 
> > These issues (the available embedded cpu's at the time) were why WEP
> > was originally specified, even though they new it was weak even as the
> > standard was ratified.
> 
> Yes.  On the other hand, here we are some 12 years later, in which time
> the processing capabilities of embedded chips have ... expanded
> somewhat.
> 
> So, are you asserting that most, or even many, modern wireless chipsets
> are still restricted by CPU power for the embedded device when running
> WEP encrypted traffic?
> 
> Regards,
>         Daniel
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-- 
William Kenworthy <billk at iinet.net.au>
Home in Perth!