Please help! 100BaseT 100m distance limit

Dear all,

I have a network with 20 PCs, I would like to add 2 more PCs to the
network, but I find that the distance from the existing switch is more
than 100m (it is about 160m), would it be a problem ? e.g. slow or
unstable network, etc. Because I know there is a limit for 100BaseT
network that 100m is the maximum distance.

Could you suggest me any ideas of what I should do ? Add 1 more switch
between the existing switch and the 2 new PC ? or others ways ?

Thanks so much.
Marcus

On 29 Sep 2004 09:33:00 -0700, (E-Mail Removed) (Marcus) wrote:

>Dear all,
>
>I have a network with 20 PCs, I would like to add 2 more PCs to the
>network, but I find that the distance from the existing switch is more
>than 100m (it is about 160m), would it be a problem ? e.g. slow or
>unstable network, etc. Because I know there is a limit for 100BaseT
>network that 100m is the maximum distance.
>
>Could you suggest me any ideas of what I should do ? Add 1 more switch
>between the existing switch and the 2 new PC ? or others ways ?

One can not predict boundary effects. The two added systems may work fine, may
work marginally, may not work worth a spit. YMMV...

Uplinking a small switch (NOT a HUB!) would indeed be the most expedient way
to deal with it. The switch effectively acts as a repeater and adds another
100 meters to your network span...

/daytripper

Thanks, daytripper.

Mmm... I am just thinking of another question, if you know, please
teach me, thanks.

I know there are some switches out there have fiber options, I am just
thinking of, in what circumstance I need to use fiber optic line to
connect 2 switches, when the second switch connect so many PCs ? (e.g.
30 ?) or other reasons ?

Thanks so much.
Marcus



daytripper <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>. ..
> On 29 Sep 2004 09:33:00 -0700, (E-Mail Removed) (Marcus) wrote:
>
> >Dear all,
> >
> >I have a network with 20 PCs, I would like to add 2 more PCs to the
> >network, but I find that the distance from the existing switch is more
> >than 100m (it is about 160m), would it be a problem ? e.g. slow or
> >unstable network, etc. Because I know there is a limit for 100BaseT
> >network that 100m is the maximum distance.
> >
> >Could you suggest me any ideas of what I should do ? Add 1 more switch
> >between the existing switch and the 2 new PC ? or others ways ?
>
> One can not predict boundary effects. The two added systems may work fine, may
> work marginally, may not work worth a spit. YMMV...
>
> Uplinking a small switch (NOT a HUB!) would indeed be the most expedient way
> to deal with it. The switch effectively acts as a repeater and adds another
> 100 meters to your network span...
>
> /daytripper

On 30 Sep 2004 08:39:38 -0700, (E-Mail Removed) (Marcus) wrote:

>daytripper <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>. ..
>> On 29 Sep 2004 09:33:00 -0700, (E-Mail Removed) (Marcus) wrote:
>>
>> >Dear all,
>> >
>> >I have a network with 20 PCs, I would like to add 2 more PCs to the
>> >network, but I find that the distance from the existing switch is more
>> >than 100m (it is about 160m), would it be a problem ? e.g. slow or
>> >unstable network, etc. Because I know there is a limit for 100BaseT
>> >network that 100m is the maximum distance.
>> >
>> >Could you suggest me any ideas of what I should do ? Add 1 more switch
>> >between the existing switch and the 2 new PC ? or others ways ?
>>
>> One can not predict boundary effects. The two added systems may work fine, may
>> work marginally, may not work worth a spit. YMMV...
>>
>> Uplinking a small switch (NOT a HUB!) would indeed be the most expedient way
>> to deal with it. The switch effectively acts as a repeater and adds another
>> 100 meters to your network span...
>>
>> /daytripper

>Thanks, daytripper.
>
>Mmm... I am just thinking of another question, if you know, please
>teach me, thanks.
>
>I know there are some switches out there have fiber options, I am just
>thinking of, in what circumstance I need to use fiber optic line to
>connect 2 switches, when the second switch connect so many PCs ? (e.g.
>30 ?) or other reasons ?
>
>Thanks so much.
>Marcus

Two primary reasons: spanning distance that exceeds the practical use of
copper; or spanning networks between buildings.

For the latter case, fiber rids one of the problem of ground currents (very
bad juju ) and lightning strikes (even worse ;-)

/daytripper

Thanks, daytripper.


daytripper <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>. ..
> On 30 Sep 2004 08:39:38 -0700, (E-Mail Removed) (Marcus) wrote:
>
> >daytripper <(E-Mail Removed)> wrote in message news:<(E-Mail Removed)>. ..
> >> On 29 Sep 2004 09:33:00 -0700, (E-Mail Removed) (Marcus) wrote:
> >>
> >> >Dear all,
> >> >
> >> >I have a network with 20 PCs, I would like to add 2 more PCs to the
> >> >network, but I find that the distance from the existing switch is more
> >> >than 100m (it is about 160m), would it be a problem ? e.g. slow or
> >> >unstable network, etc. Because I know there is a limit for 100BaseT
> >> >network that 100m is the maximum distance.
> >> >
> >> >Could you suggest me any ideas of what I should do ? Add 1 more switch
> >> >between the existing switch and the 2 new PC ? or others ways ?
> >>
> >> One can not predict boundary effects. The two added systems may work fine, may
> >> work marginally, may not work worth a spit. YMMV...
> >>
> >> Uplinking a small switch (NOT a HUB!) would indeed be the most expedient way
> >> to deal with it. The switch effectively acts as a repeater and adds another
> >> 100 meters to your network span...
> >>
> >> /daytripper
>
> >Thanks, daytripper.
> >
> >Mmm... I am just thinking of another question, if you know, please
> >teach me, thanks.
> >
> >I know there are some switches out there have fiber options, I am just
> >thinking of, in what circumstance I need to use fiber optic line to
> >connect 2 switches, when the second switch connect so many PCs ? (e.g.
> >30 ?) or other reasons ?
> >
> >Thanks so much.
> >Marcus
>
> Two primary reasons: spanning distance that exceeds the practical use of
> copper; or spanning networks between buildings.
>
> For the latter case, fiber rids one of the problem of ground currents (very
> bad juju ) and lightning strikes (even worse ;-)
>
> /daytripper