Problems interconecting modem Dlink DCM-200 and Linksys router

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The problem is as follows:

I had 3 wired PCs connected on a Linksys non-wireless router (BEFSR41).
Everything was working well.

I bought a wireless router, also from Linksys (WRK54G), that is very
similar to the other one but that is wireless and I configured it
accordingly to the instructions without any problem.
There was trafic by cable (2 PCs) and by air (portable).

Later, I realize that there was something wrong. The connection was not
regular. I realize that the connection between the modem and the router
stops for 2 to 3 seconds (at least, the link led on the modem and the
internet led on the router go off at the same time) with no aparent
cause). It happens several times per minute.

It happens the same with no PC connected to the router (including
wireless PC). This means that it is not a PC configuration problem.

I already compared the configuration of the old and the new router and
they are, apart the wireless part, the same (the routers are very
similar, apart the wireless section).

I also check that the clone function for the mac address is active on
the router. I believe that the modem sees the right mac address.

I connect the old router and everything is ok.

Does somebody have a clue?

Thank you in advance.

Re: Problems interconecting modem Dlink DCM-200 and Linksys router

I would take it back and get another one, if the second one gives you
problems then I would conclude that it is a problem in the setup or
interference from an outside source or just a bad cable.
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Re: Problems interconecting modem Dlink DCM-200 and Linksys router

jfaria wrote:
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The WRK54G is similar to the BEFSR41 only in that it is in a case that looks
similar. While most Linksys products are just fine, the WRK54G was a
limitedly produced piece of junk.

Take it back, and get a WRT54G, or WRT54GS instead.

Warren H.

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Re: Problems interconecting modem Dlink DCM-200 and Linksys router

jfaria wrote:
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Warren is probably correct in that your router model is a demonstrated
piece of junk.

OTOH, you did power-cycle the modem first when the router was connected
to the modem?  BTW, you do not need nor want to clone the MAC address of
the previous router.  Simply pull the power from the modem for one
minute, reconnect the power, and the modem will find the router's MAC
address as the connected device.


Re: Problems interconecting modem Dlink DCM-200 and Linksys router

I have a similar setup; modem is the DLink DCM-200 which I've been
using for years with no problem. Router for years has been Linksys
wireless B. I "upgraded" to a linksys G a few months ago without

Earlier this week I had some problems with wired and wireless
connectivity until it finally died completely. I'm able to plug
directly into the modem and connect reliably. I also took the router to
work to confirm that still worked. So the combination of Comcast, the
DLink and the Linksys have suddenly become incompatible recently.

I just had the Comcast guy out to the house to confirm that their
signal was ok and it was. Comcast's site
( )
regarding the DCM200 states:
 "This modem cannot be upgraded to comply with the DOCSIS 1.1
specification. If you currently use this model it is not necessary to
remove it from the network. However, this device should not be returned
to service if sent back to the warehouse, nor should it be purchased
for use with the Comcast High-Speed Internet Service."

So I think the most obvious option is to obtain a DOCSIS 1.1 compliant
modem (buy or lease from Comcast) and see if it works with the router.
I'll post the results here...

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