Cable Modems Resetting cable modem?

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Subject Author Date
Resetting cable modem? Martin 11-18-04
Posted by Martin on November 18, 2004, 4:21 am
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I have a Motorola SB5100 modem which I use with 2 computers. I use a KVM
switch and a Cat5e RJ45 switch. The problem is when I switch the modem
between computers I have to power off the modem manually to allow it to
reset. Is there any way to avoid that?

I was wondering if the modem could be connected to both running computers at
the same time, using a Y connector, and avoid the powering off annoyance.

Is there a better way to do this, or isn't it possible?




Posted by $Bill on November 17, 2004, 8:35 pm
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Martin wrote:

> I have a Motorola SB5100 modem which I use with 2 computers. I use a KVM
> switch and a Cat5e RJ45 switch. The problem is when I switch the modem
> between computers I have to power off the modem manually to allow it to
> reset. Is there any way to avoid that?
>
> I was wondering if the modem could be connected to both running computers at
> the same time, using a Y connector, and avoid the powering off annoyance.
>
> Is there a better way to do this, or isn't it possible?

Yes, buy a router for $10-30 and you get a free firewall to go with.
You'll thank yourself later.



Posted by Warren on November 18, 2004, 4:41 am
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Martin wrote:
>I have a Motorola SB5100 modem which I use with 2 computers. I use a
>KVM switch and a Cat5e RJ45 switch. The problem is when I switch the
>modem between computers I have to power off the modem manually to allow
>it to reset. Is there any way to avoid that?
>
> I was wondering if the modem could be connected to both running
> computers at the same time, using a Y connector, and avoid the
> powering off annoyance.
>
> Is there a better way to do this, or isn't it possible?

The closest thing to a Y connector for Ethernet would be a hub or a
switch. (Note that a "switch" doesn't refer to a physical connection
that turns on and off, but rather to a method of only sending packets to
the leg of the switch that is concerned with them. A hub simply
broadcasts all packets to all legs.) But for that to work, you would
need to contact your cable ISP, and pay for two IP addresses. (Assuming
your cable company even offers this option.)

The easiest way to handle this situation is to get a home broadband
router, connect the router to the cablemodem, and connect the computers
to the router. In this situation, the router gets an IP address assigned
to it by your ISP's DHCP server. The computers connected to the router
get private range IP addresses from the router. NAT (network address
translation) is used to direct packets only along the proper route.

--
Warren H.

==========
Disclaimer: My views reflect those of myself, and not my
employer, my friends, nor (as she often tells me) my wife.
Any resemblance to the views of anybody living or dead is
coincidental. No animals were hurt in the writing of this
response -- unless you count my dog who desperately wants
to go outside now.
Blatant Plug: Black & Decker Landscaping Tools & Parts:
http://www.holzemville.com/mall/blackanddecker





Posted by Ron Hunter on November 18, 2004, 7:06 am
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Martin wrote:
> I have a Motorola SB5100 modem which I use with 2 computers. I use a KVM
> switch and a Cat5e RJ45 switch. The problem is when I switch the modem
> between computers I have to power off the modem manually to allow it to
> reset. Is there any way to avoid that?
>
> I was wondering if the modem could be connected to both running computers at
> the same time, using a Y connector, and avoid the powering off annoyance.
>
> Is there a better way to do this, or isn't it possible?
>
>
Just buy a cheap router and you can use both computers at the same time
without this hassle. They (routers) are available for as little as $25.
Probably less than you paid for the switches.


Posted by James Knott on November 18, 2004, 3:43 pm
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Martin wrote:

> I have a Motorola SB5100 modem which I use with 2 computers. I use a KVM
> switch and a Cat5e RJ45 switch. The problem is when I switch the modem
> between computers I have to power off the modem manually to allow it to
> reset. Is there any way to avoid that?
>
> I was wondering if the modem could be connected to both running computers
> at
> the same time, using a Y connector, and avoid the powering off annoyance.
>
> Is there a better way to do this, or isn't it possible?

Try releasing dhcp before switching and then restarting after.

However, a better way, is to buy one of those cheap firewall/router boxes,
which will not only eliminate that problem, but also greatly improve
security.



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