ISP without router connection

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J

Jomaloro

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Feb 26, 2017
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My ISP connection to the internet consist of what I think is a modem, that then connects to a network switch. To get internet on a PC I need to connect the switch to the PC and setup a static IP, the thing is that I want to connect the switch to a router that gives IPs to the devices that connect to it.

How should I do this connection? Should I connect the switch to the LAN ports of the router or to the other one? Should I setup DHCP? Or NAT?

Thank you in advance!
 
Solution
jsmithepa
A "textbook" connection is like this:

ISP --- Modem (no NAT)-(public IP)----> User Router with NAT and DHCP ---(private IP)---> switch ----> ethernet clients.

These days, often times the ISP gives you a GATEWAY=Modem+WIFI router+4 ethernet in 1 box, in which case it looks like this:

ISP ----- GATEWAY (modem+WIFI router+4 port LAN DHCP here) ---(private IP)--> optional Switch for more LAN ports -----> Clients.

In ALL instances, where you see ROUTER=NAT and there should be only and only ONE of those. At the same time there should one and ONLY ONE DHCP server.
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jsmithepa

jsmithepa

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Jun 14, 2014
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A "textbook" connection is like this:

ISP --- Modem (no NAT)-(public IP)----> User Router with NAT and DHCP ---(private IP)---> switch ----> ethernet clients.

These days, often times the ISP gives you a GATEWAY=Modem+WIFI router+4 ethernet in 1 box, in which case it looks like this:

ISP ----- GATEWAY (modem+WIFI router+4 port LAN DHCP here) ---(private IP)--> optional Switch for more LAN ports -----> Clients.

In ALL instances, where you see ROUTER=NAT and there should be only and only ONE of those. At the same time there should one and ONLY ONE DHCP server.
 
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Solution
J

Jomaloro

Prominent
Feb 26, 2017
3
0
510


Thanks for the interest, I am not a Network expert as you can see but I can manage myself around and I didn't know that routers have an option to set it up with a Static IP service from the ISP, I connected my router, selected static IP and then typed in the values the ISP gave me for IP, GW, Mask and DNS and it started routing seamlessly.

Thank you all!
 
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J

Jomaloro

Prominent
Feb 26, 2017
3
0
510


Yeah my ISP didn't give a GATEWAY just the modem, I think it was that way because it is and enterprise service, but with a router I solved it very quickly.
 
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