Re: Router speeds...

[Roland Dobbins <rdobbins () cisco com>]

Antenna problems?

I have a Linksys WRT54G running a Sveassoft image, and I get around  
3mb/sec out of it (my DSL is only 3mb/sec) using an Apple 15"  
PowerBook.  I have 100% signal-strength throughout my apartment (no  
chicken-wire or rebar here, heh), FWIW.

On Nov 25, 2005, at 1:13 PM, Dr. Neal Krawetz wrote:

> On Fri Nov 25 13:25:34 2005, Roland Dobbins wrote:
> > You shouldn't notice a difference.
>
> Agreed -- I "shouldn't". :-)
>
>
> > My guess is that you may be experiencing spectrum collision from
> > other 2.4GHz devices such as phones, microwaves, or APs which belong
> > to your neighbors (assuming you live in a densely-populated area).
> > You might want to try changing the channels in use by your wireless
> > gear around to see if it makes any difference.
>
> The wireless router (all my routers) reside 10 feet underground, in
> a cage shielded by grounded rebar and chicken wire.
> (I'm not kidding here.  Most homes in Colorado have basements, and
> the chickenwire was for my own paranoia.)
> According to my wireless laptop, there is no ambient noise.
> And the Wifi drops off to zero outside of the cage.
> (Measured using iStumbler for the Mac.)
>
> But in any case...
> If I tell the Netgear or Linksys to not use the wireless network
> ("Which wifi? B, G, Both, or Disable", say "Disable") it does not  
> change
> the throughput.  NetGear and Linksys are both very slow -- half the
> speed of a 5 year old wired router, and less than half of a new wired
> router.
>
> Moreover, the Linksys seems inconsistent -- traffic bursts at 3Mb then
> fluctuates between 1 and 2.5.  But it never gets to the 6Mb like  
> the D-link.
> (If I turned off ALL filtering rules, it becomes more consistent, but
> not faster than 3Mb.)
>
> One other thing I just noticed with the Linksys wireless (using  
> iStumbler).
> If the Mac is across the room, the maximum signal is around 60%.
> If the Mac is 3" from the Linksys, the max signal is only 87%.
> And the strength does not change regardless of the channel.
> (I just tried all 11 channels.  No significant signal strength  
> difference.)
>
>
> Good thought, though.
> Other ideas?
>
>                                         -Neal
> --
> Neal Krawetz, Ph.D.
> Hacker Factor Solutions
> http://www.hackerfactor.com/

--------------------------------------------------------------------
Roland Dobbins <rdobbins () cisco com> // 408.527.6376 voice

 Algorithm agility is an essential feature in any Internet protocol.

                     -- Bruce Schneier



_______________________________________________
Fun and Misc security discussion for OT posts.
https://linuxbox.org/cgi-bin/mailman/listinfo/funsec
Note: funsec is a public and open mailing list.