Cisco Switch Question

Discussion in 'Cisco' started by GlenM, Oct 18, 2011.

  1. GlenM

    GlenM Guest

    Hi There;

    I inherited a Cisco 3550 Series Switch (WS-C3550-24-SMI) - I won't
    pretend to know IOS very well, but is version 12.2(35)SE.

    I am attempting to create some VLANs on it, however, I see interfaces
    on the switch called Vlan10, Vlan20, Vlan30, etc.

    When I attempt to create a vlan, it seems to give me some conflicting

    Example - I want to assign the FastEthernet port 2-6 to a vlan, I
    create vlan 30, assign it IP information, and it assigns it to Vlan30
    ( see what I mean?)

    Perhaps, the best way for me to go is to reset this thing back to
    factory default.

    Perhaps someone has a better way, I can pastebin my 'show running
    config' if need be.


    GlenM, Oct 18, 2011
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  2. Did you want to run the switch at layer 2 or layer 3 VLANs?
    Thats probably the source of difficulty..

    The layer-2 VLAN creation is through the top level 'vlan' command.


    vlan 10,20,30

    Assign a port to vlan 30

    interface FastEthernet 0/5
    switchport access vlan 30

    Do you want layer 3 or layer-2?

    You don't need to assign 'interface Vlan 30' any IP address info if
    you don't need layer-3 routing.

    Probably describe what you want to do, and what you have now with the
    important config bits. Ie. the 'vlan' command, the 'interface' commands..
    Doug McIntyre, Oct 18, 2011
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  3. GlenM

    GlenM Guest

    Hi - thank you for responding.

    I am not certain if I want layer 2 or 3 vlans - I will have to look up
    the difference. Like I said, I am a little new at this and it is
    starting to come together.

    So far, besides the price, there is not much that I *don't * like
    about Cisco Switches and Routers.

    I will go over my commands and get back to you - probably tomorrow.


    I will get back to you
    GlenM, Oct 19, 2011
  4. GlenM

    GlenM Guest


    Thanks for your assistance.

    Apparently, I just needed to sit down and actually study what a VLAN
    actually is. Now that I understand what the hell I am doing, it made
    things much clearer.

    To answer your question, I was creating layer 2 VLANs. More or less
    just separating two things - client and video.

    It seems to work very well.

    Thank you for responding.

    GlenM, Oct 20, 2011
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