Networks Use old ADSL Router as switch?

Simple question:
Is it possible?

I am currently on Cable Broadband, and am wondering whether I can use my unused ADSL Router as a switch (to allow two computers to use one long (existing) network cable to connect to the Cable Router).

Thanks in advance...

 

i think cable broadband is like ethernet, so you must get a gateway of some sort. so a DSL router is needed.

ADSL router can only be used if you don't need a gateway, which is very unlikely.

 

First things first, check compatibility with DD-WRT.

 

Possibly, depends on what particular hardware you're refering to.
Is your Cable connection a simple modem, or router? How many LAN ports?
What model is the ADSL Router? How many LAN ports?

If it's a Cable Modem/Router/Switch and an ADSL Modem/Router/Switch, then It's possible you can turn off the the ADSL DHCP function, give it a static IP on the Cable Router and connect the 2 via Ethernet, giving you an extra 3 LAN ports.

But without some specific details, very hard to advise.

 

I'm aiming for something like

Cable modem --- 4 port router --- cable --- old router === two PCs
(where '=' is two cables)

I think this is what I am expecting, will try it out later.

 

I thought that's what you meant.
Yes, it should be fine, as long as both are routers. What are the make and model numbers of the routers you are using??

 

yeah, i was thinking you won't have the 4 port router there.

then the old router will act like a switch, and the 4 port router will provide all the services such as DHCP