On Sun, 26 Feb 2012 20:07:15 -0500, "JohnJ" <email@example.com>
>Here is a novice question.
Then ask a novice.
>My Gateway laptop, model MT6451 from 2007, has a
>Broadcom 802.11g Network Adapter, driver version 188.8.131.52, dated
>10-24-2006, on a broadband (Comcast) connection. I'm now using a Netgear
>WNDA3100 dual band USB adapter and sitting close to the router (Netgear
>N600) I get readings of 270.0 Mbps on the Netgear, and 54.0 Mbps on the
>Broadcom. For best performance should I leave both radios active or should
>I disable the Broadcom,or doesn't it matter?
One radio at a time. Since they're both connected to the same
wireless router (Netgear N600), they'll both be on the same channel
(if they both connect on 2.4GHz), and therefore interfering with each
>I don't know how Firefox or
>Internet Explorer gets fed web pages and streaming video to know if keeping
>the Broadcom active influences the laptop to use the slower adapter rather
>than using the faster Netgear.
I don't know what algorithm is used. Obviously, if the client adapter
(i.e. Broadcom) can only do 2.4GHz, the router will use 2.4GHz. I
vaguely recall that you can specify which band to use on the WNDA3100,
but I'm not sure.
>Of course the Netgear adapter is a dual
>band, G and N speeds. Will the laptop always choose the N speed even when
>both G and N speeds are available?
That's a setting in the N600 router. The router and client will try
to negotiate the highest connection speed possible. If there's no
traffic being passed, the speed will usually show as something very
high, such as the 270MBits/sec that you're seeing. Once the traffic
starts moving, and the errors start to appear, the router will try to
slow things down. If the error rate is sufficiently high, it will
drop to G speeds.
>With 3 avenues available, with the
>Broadcom adapter active, does the laptop just pick whichever it wants? And
>how does it do that?
Well, if you must know, it's set by the route metric. Run:
and look at the metric column.
Note that the automatic metric is set by connection speed.
>I got the Netgear so that I could stream Netflix wirelessly but even at
>270.0 Mbps the streaming is so choppy as to be unwatchable.
There's no way to tell from that if the congestion is on your Comcast
connection, somewhere on the internet, in your router, wiring,
wireless client, TCP/IP configuration, or computah. The easiest way
to troubleshoot this is by substitution. Try your laptop via the
wired ethernet connection. Try dragging you laptop to some other
internet connection and see how it performs.
>I guess the
>graphics card (ATI Radeon Xpress 1150) and the CPU (AMD Turion(tm) 64 X2
>TL-50 chip, 1596MHz) is a bit too slow to keep up regardless of how fast my
>Internet connection is, eh?
Maybe. If you're trying to stream uncompressed HDTV at full 1080i
resolution, your Comcast connection won't deliver the necessary speed.
Netflix automatically adjusts the resolution depending on the
available download speed. It usually shows up as a blurry picture,
not a choppy picture or lost frames.
Jeff Liebermann firstname.lastname@example.org
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558