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Why Wifi does not work, VLAN problem?

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  • Why Wifi does not work, VLAN problem?

    Hello and thanks for reading!

    We have two different Internet providers in the office. We use one of them only for the VoIP. In the switch (Cisco 3560) I have 10 ports in a different VLAN (phones, PBX and the Internet router). The problem is that I want to use this router as the WIFI access point in the office, for the visitors to be able to connect to the Internet). As soon as I created the VoIP VLAN, I can't connect to the Internet through the WIFI, and I don't know why. The rest of the clients are in the default VLAN, and the main router do not have WIFI.

    As my network is very small (25 users), I decided not to assign a different subnet to the VoIP VLAN, is this a problem? The DHCP pool in the WIFI router starts at 192.168.60.100, so I'm not giving overlapped IP addresses to the WIFI users.

    Some more info:

    main router IP 192.168.60.1
    Wifi router IP 192.168.60.5

    I tried from a WIFI laptop with static addresses like this

    Option 1 (NOT WORKING)
    IP 192.168.60.101
    MSK 255.255.255.0
    GW 192.168.60.5

    Option 2 (WORKS)
    IP 192.168.60.101
    MSK 255.255.255.0
    GW 192.168.60.1 (wich is the default route)

    I'd like the WIFI devices to connect to the Interternet through the 192.168.60.5 router but I

    Any help would be great,

    Jud

  • #2
    Re: Why Wifi does not work, VLAN problem?

    Hello,

    You did assing port to a different VLAN. these ports cannot connect to the default vlan without routing. Routing is only possible if both VLAN's are in a diferent subnet. Does the Cisco 3560 do any routing, if so, that will fail now in the net VLAN.

    Gert
    gerth

    MCITP sa, ea & va, [email protected]

    Comment


    • #3
      Re: Why Wifi does not work, VLAN problem?

      Thank you very much for the answer gerth.

      Why should they have to connect with the default VLAN?, I assigned several ports to a different VLAN, and I attached all the VoIP phones and the router (wifi). This is the only wifi router in the office, dhcp is on, but visitors don't receive an IP address, I don't know why.

      Regards,

      Jud

      Comment


      • #4
        Re: Why Wifi does not work, VLAN problem?

        Are the vlans on different subnets?
        Have you configured dhcp scopes?
        Are the (if needed) Ip helper addresses configured correctly?
        Marcel
        Technical Consultant
        Netherlands
        http://www.phetios.com
        http://blog.nessus.nl

        MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
        "No matter how secure, there is always the human factor."

        "Enjoy life today, tomorrow may never come."
        "If you're going through hell, keep going. ~Winston Churchill"

        Comment


        • #5
          Re: Why Wifi does not work, VLAN problem?

          Thanks for your answer Dumber,

          The VLANs are in the same subnet.
          Yes, I have configured DHCP scopes.
          I believe, we don't need Ip helper, as the server is working well?

          The wireless clients do not get any IP, I don't understand why, DHCP is enabled in the router.

          Jud

          Comment


          • #6
            Re: Why Wifi does not work, VLAN problem?

            Create vlans and use different subnets.
            Marcel
            Technical Consultant
            Netherlands
            http://www.phetios.com
            http://blog.nessus.nl

            MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
            "No matter how secure, there is always the human factor."

            "Enjoy life today, tomorrow may never come."
            "If you're going through hell, keep going. ~Winston Churchill"

            Comment

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