Tinfoil works well :) If not that, some conduit will do too. If it's running on the outside of your house, I would put it in conduit anyway. ---- Julian
On Tue, Aug 2, 2011 at 8:03 AM, Anthony Q. Martin <[email protected]>wrote: > Oops....did it over with the bandwidth value set higher (50m). Got this: > > [3] Server Report: > [ 3] 0.0-10.0 sec 53.1 MBytes 44.6 Mbits/sec 0.522 ms 3813/ 41719 > (9.1%) <======= > > did it again with the same 50m but this time using a different PC on my > network. Got this: > > [3] Server Report: > [ 3] 0.0-10.0 sec 58.7 MBytes 49.2 Mbits/sec 0.694 ms 25/41892 > (0.06%) > > As can be seen, the second one is way under 1% (see below) while the first > is way over 1%. I'm losing lots of packets probably due to lack of > shielding. Crap! > > The cabling under the house is probably too close to something that is > spewing RF. I wonder if I can make some shielding to improve this? > > > On 8/1/2011 12:59 PM, Thane Sherrington wrote: > >> At 01:53 PM 01/08/2011, Anthony Q. Martin wrote: >> >>> What do you mean? they are the points where inference gets in? >>> >> >> That's where I run into connection issues. Other than the occasional >> problem where I go in to a spot where some idiot ran the cable and either >> ran it alongside power cables stretched it, most of the connection failures >> are at the ends. I think you can use iPerf to test data loss on Ethernet. >> Or get one of those high end cable testers from Fluke. >> >> > Following this site: > > http://openmaniak.com/iperf.**php <http://openmaniak.com/iperf.php> > > They say this: > > "The UDP tests with the -u argument will give invaluable information about > the jitter and the packet loss. If you don't specify the -u argument, Iperf > uses TCP. To keep a good link quality, the packet loss should not go over 1 > %. A high packet loss rate will generate a lot of TCP segment > retransmissions which will affect the bandwidth." > > In their example, they get this: > > ------------------------------**------------------------------ > Client connecting to 10.1.1.1, UDP port 5001 > Sending 1470 byte datagrams > UDP buffer size: 108 KByte (default) > ------------------------------**------------------------------ > [ 3] local 10.6.2.5 port 32781 connected with 10.1.1.1 port 5001 > [ 3] 0.0-10.0 sec 11.8 MBytes 9.89 Mbits/sec > [ 3] Sent 8409 datagrams > [ 3] Server Report: > [ 3] 0.0-10.0 sec 11.8 MBytes 9.86 Mbits/sec 2.617 ms 9/ 8409 > (0.11%) > > That last part is the # of packets that were lost and had to be re-sent. > They got 0.11% and 1% is the upper limit on a quality link. When I run > this test I get this: > > 3] Server Report: > [ 3] 0.0-10.0 sec 11.9 MBytes 10.0 Mbits/sec 1.711 ms 2/ 8505 > (0.024%) > > So, perhaps this is time dependent and/or condition dependent...or I'm just > barking up entirely the wrong tree. > >
