OT: Wireless Network Strength Dependent On Wired Network?
bruns at 2mbit.com
Sat Jun 20 08:21:39 UTC 2009
On 6/20/09 12:47 AM, Neil wrote:
> Now, a former electrical engineer is claiming that if we improve the wired
> network so that the signal comes across better, then computer2 won't drop
> the wireless connection so frequently. (He says that the signal emitted by
> the wireless router will be improved by feeding it a better source signal.)
He doesn't know what he's talking about. The two signals have nothing
to do with one another - there is no direct connection between wired
ethernet and wifi. You can not just plug an antenna into the end of a
cat5e cable and expect it to work.
In an easier to visualize path... if you have an ethernet card, and a
802.11g card in your desktop, yes, they may be attached to the same PCI
bus, but the packets still have to come in one interface, be handled by
the hardware on the card, passed down the PCI bus to the CPU where the
software handles processing of the data, then passed back down the PCI
bus to the other card, processed by that card, then transmitted by that
card over whatever transport it uses. There's a few conversions going
on during the path, throwing out garbage data, retransmitting, etc.
If you shut off the antenna of the wifi card, it doesn't affect the
ethernet card, and it will continue passing data for the computer to the
LAN. If you unplug the cat5e, the wifi can still pass data between
devices that communicate over wifi.
I can go into alot more detail here, but moral of story, is don't let a
electrical engineer that has no clue about how ethernet and wifi work
tell you how packets get from one place to another, and how ethernet
relates to wifi.
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