[lug] home network question

Davide Del Vento davide.del.vento at gmail.com
Fri Dec 21 17:52:39 MST 2012

Thanks to both!

More data collected. The phone is Android 2.3.6
A laptop cannot see the wireless network when the phone cannot, which
I believe point strongly versus the problem.

It did not look to have any grounding issue, in that connecting or
disconnecting the desktop (grounded) did not change anything and the
trick below (which did partially solve the problem) was performed on
an ungrounded laptop, in the same grounding conditions in which it was

According to the router web interface the wireless was enabled. I
played with many settings (including a few reboot of the box) without
any success. The odd thing is that the web interface does not show the
MAC address of the WLAN (let alone allowing me to change it). I then
disabled (reboot) and reenabled (reboot) the WLAN et voila' -- it is
now working. The odd thing still remains the same (can't see router
MAC, I guess I can connect the laptop and find it), but the web
interface does show the phone MAC address (?)

I suspect the issue will reoccur, so if you have other ideas (even
wild) please let me know.

Happy Holidays,

On Tue, Dec 18, 2012 at 10:17 PM, F.L. Whiteley <techzone at greeleynet.com> wrote:
> More data.
> I was troubleshooting an iPad wireless problem recently, perhaps if the
> phone is iPhone it might apply also.  Apparently the iPads do not like
> double-NAT WIFI connections, so setting up the router as an access point is
> preferred.  Is that your setup?
> Slightly different, but also WIFI. I've done some local support on Skybeam
> customers where they are on rural acreages with neighbors.  They call
> Skybeam, no trouble found with their service or radios, but performance
> remains terrible.  I show up, change the customer LAN addressing from the
> default and it just flows.  Now, is it a WIFI radio/radio issue or slightly
> upstream?  Some appear near enough, but others appear outside the range for
> radio/radio trouble.  Though the former seems most likely, I have this
> nagging feeling despite the MAC isolation that appears to be used on the
> network.  I advised Skybeam support.  These customers typically buy only
> from 2-3 brands of the popular WIFI routers from the big box stores, so the
> default LAN addressing is common among 10-20 neighbors.  Plus they are
> definitely sharing the same tower antenna.
> Frank Whiteley
> -----Original Message-----
> From: lug-bounces at lug.boulder.co.us [mailto:lug-bounces at lug.boulder.co.us]
> On Behalf Of Davide Del Vento
> Sent: Monday, December 17, 2012 8:06 AM
> To: Boulder (Colorado) Linux Users Group -- General Mailing List
> Subject: [lug] home network question
> Folks,
> I have a TRENDnet TEW 432BRP with firmware v2.00.19 connected via ethernet
> to another wireless+ethernet router. Then I have two PCs connected to the
> TRENDnet via ethernet and my wife would like to use its wifi for her phone.
> The trouble is, if the PCs are off, the phone always says the wifi is out of
> range, even when sitting in the same room where the router is.
> When the PCs are on, it's 50-50 (sometimes the wifi is out of range,
> sometimes is working). The PC always access the network fine.
> Do you have any idea of what's going on? I suspected something like power
> save, but couldn't find anything. Neither did Google. Do I have a defective
> unit, or is it anything else I could try? I'd be eager to try something
> hacky, but e.g.
> http://wiki.openwrt.org/toh/start#trendnet isn't supported.
> Even just suggestions about keywords to Google would be good.
> Thanks,
> Davide
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