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why do I need network id and host id?


How does IPv4 Subnetting Work?Why do ICMP Redirect Host happen?How does IPv6 subnetting work and how does it differ from IPv4 subnetting?Unable to Connect to Server Via External Network:Small remote network fileserver accessWhy do all computers on my network have the same MAC address?How to connect devices behind Comcast router/modem with devices behind wireless routerWhy does operating system need to know subnet mask?What is this router's IP address(es)?Different subnet mask on router and DHCP server













-3















Here is what I think.



When I make request to some website, router through modem makes the request to the internet, (website) and gets the response. (how does it get response?) , webserver knows the router's ip address. Then router knows my private ip address and gives me back what I requested.



The question is , I heard that there's a subnet mask and I know what It does. Why do I need NETWORK ID at all? I read somewhere that it's used so that response could find the network from where request was done, but in above scenario, there's no network needed as web server knows router's ip address and gives it response.



Why do I need(does router need) NetworkId and HostId to know specifically?









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    -3















    Here is what I think.



    When I make request to some website, router through modem makes the request to the internet, (website) and gets the response. (how does it get response?) , webserver knows the router's ip address. Then router knows my private ip address and gives me back what I requested.



    The question is , I heard that there's a subnet mask and I know what It does. Why do I need NETWORK ID at all? I read somewhere that it's used so that response could find the network from where request was done, but in above scenario, there's no network needed as web server knows router's ip address and gives it response.



    Why do I need(does router need) NetworkId and HostId to know specifically?









    share







    New contributor




    Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      -3












      -3








      -3








      Here is what I think.



      When I make request to some website, router through modem makes the request to the internet, (website) and gets the response. (how does it get response?) , webserver knows the router's ip address. Then router knows my private ip address and gives me back what I requested.



      The question is , I heard that there's a subnet mask and I know what It does. Why do I need NETWORK ID at all? I read somewhere that it's used so that response could find the network from where request was done, but in above scenario, there's no network needed as web server knows router's ip address and gives it response.



      Why do I need(does router need) NetworkId and HostId to know specifically?









      share







      New contributor




      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      Here is what I think.



      When I make request to some website, router through modem makes the request to the internet, (website) and gets the response. (how does it get response?) , webserver knows the router's ip address. Then router knows my private ip address and gives me back what I requested.



      The question is , I heard that there's a subnet mask and I know what It does. Why do I need NETWORK ID at all? I read somewhere that it's used so that response could find the network from where request was done, but in above scenario, there's no network needed as web server knows router's ip address and gives it response.



      Why do I need(does router need) NetworkId and HostId to know specifically?







      networking ip subnet





      share







      New contributor




      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








      share



      share






      New contributor




      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 5 mins ago









      Nika KhurashviliNika Khurashvili

      95




      95




      New contributor




      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      New contributor





      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Nika Khurashvili is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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