- My house there is a one fiber broadband port and fiber modem connected to this port using fiber cable.
- Then Wireless router connected to the fiber modem using CAT6 cable. Now I got another Wifi router and I'm planing to use that to improve Wifi signal strength back side of my house.
- I know I can directly connect this new Wifi router to the existing router by disabling the DHCP at the new router.
- But I would like to know, technically is it possible to connect new router directly to the fiber modem? (my fiber modem has extra RJ45 ports)
- My intention here is to reduce the traffic trough the old Wifi router
The answer is yes, sometimes.
Think of the fibre cable as a virtual ethernet cable - from what you have described (and it would be a common setup), thats how its behaving. The question is then "What is the Ethernet cable doing?"
It MIGHT be simply acting as an ethernet cable - in which case you simply need to clone the MAC address of the device its plugged into and you are on your way. This is unlikely though.
Arround my parts, PPPoE is used (PPP over Ethernet) - this requires a login and password, and possibly other tweeks - in my case, knowing what VLAN it was configured on - Once I had this information, I was able to program my Linux box to act as a router - ofcourse, my ISP was quite forthcoming with the details.
(Also, its unlikely you have a fibre modem - you probably find it is a media converter - ie all it does is convert Fibre into something that you can plug an ethernet cable in to - a modem is a very different beast)
But I would like to know, technically is it possible to connect new router directly to the fiber modem? (my fiber modem has extra RJ45 ports)
Yes, your modem seems to be a router as well. If you look at the IP address assigned to your router, if it's not your public IP address, (such as:
172.16-32.X.X), then you can simply hook you other router into one of the other ports and you'll be good to go without any further setup.
If it is a public IP address, then you may need to get a second IP address from your ISP to allow traffic from both routers at the same time; however do keep in mind that most ISPs will charge you for more than one public IP address.
Yes, it's possible to do that. Just follow these steps. Go onto the setting/setup page of your routers and where it shows "enable DHCP server" uncheck that, which will disable the DHCP server. And then you can use your routers as normal access points.