[Hidden-tech] Network question

Daniel Lieberman daniel at daniellieberman.org
Mon Dec 5 17:18:54 EST 2011


The answer was a pair of daisy chained 10 mbs hubs in the line. I swapped
them out for a 10/100 switch and all is well.

Many thanks for all the kind words and helpful suggestions.

Best Regards,

Daniel Lieberman
Daniel Lieberman Digital
413 489 1818

On Sun, Dec 4, 2011 at 11:29 AM, Daniel Lieberman <
daniel at daniellieberman.org> wrote:

> Thanks, everybody, I've determined that there's 25 megabits getting to the
> back building so the problem is downstream from there. I've been in touch
> with the guys who did the wiring and network setup & we'll have a solution
> soon!
>
> Best Regards,
>
> Daniel Lieberman
> Daniel Lieberman Digital
> 413 489 1818
>
> On Thu, Dec 1, 2011 at 11:08 AM, matt lampiasi <mattl at florenceit.net>wrote:
>
>>   ** Be sure to fill out the survey/skills inventory in the member's area.
>>   ** If you did, we all thank you.
>>
>>
>> That's interesting that 1000BaseT uses all 8 wires didn't know that.
>> fortunately haven't had to make any cables in a few years. ;)
>>
>> Matt
>> On 12/1/11 10:59 AM, Tom Kopec wrote:
>> > just to clear (or muddy) the waters on some technical details.
>> >
>> > 1) gigabit ethernet uses all four pairs; 10M and 100M ethernet
>> > generally use fewer pairs.
>> > 2)ethernet hubs are 'bad', because when you have hubs you can have
>> > collisions and backoffs. Hubs can multiply the effect of a bad cable.
>> > any modern ethernet switch, however, will never have a collision on
>> > any port.
>> > 3) a bad cable can raise heck, because it may 'kind of' work. In some
>> > of my work, we push ethernet to its limits, and I've had to deal with
>> > the bizarro effects of bad cables more often than you'd believe.
>> > 4) Matt is dead on as to process: start from the uplink and work
>> > backwards, and ditch any hubs. Be careful when measuring throughput
>> > that there is no other traffic.
>> >
>> > ...tom
>>
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