Cable modem and dsl modem/router

Hello,
Here is what I would like to be able to do without changing any of my
current settings if this is
Possible. I currently have a dsl from earthlink will call is (modem/router 1
which is a zyxel p660 r elnk)
and now I am trying out comcast will call this (modem 2 which is a motorola
sb5120) and a belkin cable
/dsl router f5d6231-4 and a wirless card belkin f57010.
As of now I have 3 computers all win98 wired to the router and the
modem/router 1 and my wireless
which is a xp home computer. All computers can see each other and things are
working perfectly and I
can connect through the net via the router.
I want to have the choose of using the cable modem or the dsl modem when
ever I want to by just unplugging
The back of the wan connection and plugging the other one in but the problem
is when I plug the cable modem to
The router and change the settings in the router to dynamic it does not want
to connect to the internet.
Any help would be appreciated.

On Sun, 11 Feb 2007 20:17:42 GMT, "jon" <jon@no_more-spam.invalid> wrote
in <GRKzh.426$(E-Mail Removed) t>:

>Here is what I would like to be able to do without changing any of my
>current settings if this is
>Possible. I currently have a dsl from earthlink will call is (modem/router 1
>which is a zyxel p660 r elnk)

Please spell things out completely -- trying to grok "clever" abbrevs is
a confusing pain.

>and now I am trying out comcast will call this (modem 2 which is a motorola
>sb5120) and a belkin cable
>/dsl router f5d6231-4 and a wirless card belkin f57010.
>As of now I have 3 computers all win98 wired to the router and the
>modem/router 1 and my wireless
>which is a xp home computer. All computers can see each other and things are
>working perfectly and I
>can connect through the net via the router.
>I want to have the choose of using the cable modem or the dsl modem when
>ever I want to by just unplugging
>The back of the wan connection and plugging the other one in but the problem
>is when I plug the cable modem to
>The router and change the settings in the router to dynamic it does not want
>to connect to the internet.
>Any help would be appreciated.

What you want can't be done, because DSL and cable require different
router configurations. What you could do is put two wired routers
(properly configured) on the two broadband modems, and then switch a
wireless access point back and forth between them. Wired computers
would be connected to the wireless access point, not either wired
router.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

jon <jon@no_more-spam.invalid> wrote something that I rearranged:
> dsl from earthlink modem/router zyxel p660 r
> All computers can see each other and things are working perfectly.

> comcast motorola sb5120 and a belkin router f5d6231-4
> when I plug the cable modem to the router it does not want to connect to
> the internet.

Did I rephrase that correctly?
What is the setup that works?
earthlink-zyxel-pc ?

What doesn't work?
comcast-motorola-belkin-pc?
Where is the Zyxel in the cable configuration?
Where is the Belkin in the DSL configuration?

I don't know what one cable you could switch and have this work.

Did the cable modem ever work?
Does it work connected directly to one PC, but not via the belkin router?

You may need to "clone" the one MAC address that the cable modem has been
configured to accept.

--
---
Clarence A Dold - Hidden Valley Lake, CA, USA GPS: 38.8,-122.5

On Sun, 11 Feb 2007 21:10:22 +0000 (UTC), (E-Mail Removed) wrote in
<eqo0nu$cg6$(E-Mail Removed)>:

>jon <jon@no_more-spam.invalid> wrote something that I rearranged:
>> dsl from earthlink modem/router zyxel p660 r
>> All computers can see each other and things are working perfectly.
>
>> comcast motorola sb5120 and a belkin router f5d6231-4
>> when I plug the cable modem to the router it does not want to connect to
>> the internet.
>
>Did I rephrase that correctly?
>What is the setup that works?
>earthlink-zyxel-pc ?
>
>What doesn't work?
>comcast-motorola-belkin-pc?
>Where is the Zyxel in the cable configuration?
>Where is the Belkin in the DSL configuration?
>
>I don't know what one cable you could switch and have this work.
>
>Did the cable modem ever work?
>Does it work connected directly to one PC, but not via the belkin router?
>
>You may need to "clone" the one MAC address that the cable modem has been
>configured to accept.

Not with Comcast. Just power cycle the cable modem to have a new MAC
address registered.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

"jon" <jon@no_more-spam.invalid> wrote in
news:GRKzh.426$(E-Mail Removed) k.net:

> Hello,
> Here is what I would like to be able to do without changing any of my
> current settings if this is
> Possible. I currently have a dsl from earthlink will call is
> (modem/router 1 which is a zyxel p660 r elnk)
> and now I am trying out comcast will call this (modem 2 which is a
> motorola sb5120) and a belkin cable
> /dsl router f5d6231-4 and a wirless card belkin f57010.
> As of now I have 3 computers all win98 wired to the router and the
> modem/router 1 and my wireless
> which is a xp home computer. All computers can see each other and
> things are working perfectly and I
> can connect through the net via the router.
> I want to have the choose of using the cable modem or the dsl modem
> when ever I want to by just unplugging
> The back of the wan connection and plugging the other one in but the
> problem is when I plug the cable modem to
> The router and change the settings in the router to dynamic it does
> not want to connect to the internet.
> Any help would be appreciated.
>
>

So what the problem ?

Why unplugging cables ?

You have DSL -> Rtr1 -> whatever
You have Cable -> Rtr2 -> whatever

If this were me, what I'd do is leave rtr1's LAN IP at 192.168.1.1 (or
whatever it is), and change rtr2's LAN IP to something else,
192.168.1.50, so there isn't a conflict of IP's. This puts both rtr
subnets on the same IP segment, so they can talk to each other.

Then, uplink the 2 rtr's together....connect them from LAN port to LAN
port. You may need a crossover cable to do so if one of the rtr's is not
autosensing or doesn't have an 'uplink' port.

At this point, from a PC, you should be able to connect to both rtr's.
Just a ping will verify that.

Then simply create 2 .bat files on your desktop.

DSL.bat & Cable.bat

In the DSL.bat file...

route delete 0.0.0.0
route add 0.0.0.0 mask 0.0.0.0 192.168.1.1 (<- or whatever the DSL RTR
LAN IP is)

In the Cable.bat...

route delete 0.0.0.0
route add 0.0.0.0 mask 0.0.0.0 192.168.1.50 (<- or whatever the Cable RTR
LAN IP is)


What each of those bat files does is change the default gateway of the
machine. The DELETE line removes the existing one, and the second line
sets the new default route. You can do the same thing thru the Network
Setup GUI, but why ?

Since you have connectivity to both, no need to swap cables or anything,
just run the .bat file of the connection you want to use.

I'm assuming that DHCP is enabled as well ? Turn that off on one of the
rtr's, as DHCP requests will be heard by both rtrs.

Regards,

DanS