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Multiple Interfaces of Router?

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  • Multiple Interfaces of Router?

    Hi there,
    It might seems a dumb question but I would dare to ask anyway.

    I know a Router can have multiple interfaces.

    If I have a LinkSys Router which has 4 ETHERNET PORTS in it, Does this mean this Router has 4 INTERFACES?

    Thanks,
    Data Sheet

  • #2
    Re: Multiple Interfaces of Router?

    No. In this context, an "Interface" is tied to a network - so your Linksys Router has two interfaces; a WAN interface and a LAN interface. The LAN interface has four PORTS.

    A router with 4 interfaces would normally be beyond your average home budget...

    By the way - stop with the "stupid question" thing... there is no such thing as a stupid question when you don't know the answer. However, a little research before asking your question out loud on the forum goes a long way around here


    Tom
    For my own and your protection, I do not provide support by private message under any circumstances. All such messages will be deleted and ignored.

    Anything you say will be misquoted and used against you

    Comment


    • #3
      Re: Multiple Interfaces of Router?

      Hi Stonelaughter,
      Thanks for the reply and I think this answer really helped me.

      Now I am going to next step of my question now:

      If I have 3 switches and to each switch I have connected one host let's say:

      Switch 1 - hostA (192.168.1.0/24) Network
      Switch 2 - hostB (192.168.2.0/24) Network
      Switch 3 - hostC (192.168.3.0/24) Network

      Each switch is connected to separate on CISCO Router , Now is this making a 3 INTERFACES now?

      Thanks again,
      Data Sheet

      Comment


      • #4
        Re: Multiple Interfaces of Router?

        Originally posted by DataSheet View Post
        Hi Stonelaughter,
        Thanks for the reply and I think this answer really helped me.

        Now I am going to next step of my question now:

        If I have 3 switches and to each switch I have connected one host let's say:

        Switch 1 - hostA (192.168.1.0/24) Network
        Switch 2 - hostB (192.168.2.0/24) Network
        Switch 3 - hostC (192.168.3.0/24) Network

        Each switch is connected to separate on CISCO Router , Now is this making a 3 INTERFACES now?

        Thanks again,
        Data Sheet
        Assuming that you mean that each subnet is connected to a different port on the same router, and the router routes between the three networks, then YES, this is three interfaces.

        A router routes between all it's interfaces according to the rules and the routing protocol you set. In your first example, the Linksys router cannot ROUTE between the four LAN ports; it can only SWITCH between them... they are, therefore, NOT four interfaces. However, a Cisco router with three ports on the front which connect to three different networks between which it can route... this is a router with three interfaces.

        I hope I'm helping.


        Tom
        For my own and your protection, I do not provide support by private message under any circumstances. All such messages will be deleted and ignored.

        Anything you say will be misquoted and used against you

        Comment

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