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Wired Networks Thread, Cisco 300, layer 3 mode, vlans and admin IP address in Technical; I'll stop posting these soon. Fortunately I have a 10-port version off to the side on the bench that I ...
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    Cisco 300, layer 3 mode, vlans and admin IP address

    I'll stop posting these soon. Fortunately I have a 10-port version off to the side on the bench that I am putting trial configurations into before I put them onto the live switches.

    From factory settings, the box gets its administration (web browser) IP address from the DHCP server. That's fine, but even if I fix that to static when I switch to layer 3 mode it reverts to dynamic and picks an IP address up out of the pool again.

    Trouble is, I cannot then move to a static IP address (as far as I can see) and overwrite the one it is using from the pool.

    Once the sw is in layer 3 mode the "Change Device IP Address" on the Getting Started page takes you to "IPv4 Interface". If you try to tick and edit vlan1 you can check the Static IP box but doesn't allow the IP address to be changed?

    Can anyone shed any light please? Clearly I don't want a static IP set to one of the IPs out of the pool.


    ...and, once you are in static IP mode you can't go back to dynamic, it is greyed out. Can scarcely believe these are browser bugs but what is the alternate logic?
    Last edited by catch21; 8th May 2013 at 12:01 PM.

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    cpjitservices's Avatar
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    Can you just reserve the IP that it keeps getting dynamically in your DHCP pool ? that way the IP wont change.

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    catch21 (10th May 2013)

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    nelsons's Avatar
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    You should be able to access the switch via the command line interface once it has an address, try connecting to it using putty and specifying telnet (TCP23) and the dynamic IP address. Once connected you should be able to change the address.

    HTH

    Steve

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    catch21 (10th May 2013)

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    I managed to CLI via the console interface and hyper terminal on a windows PC. Once you can talk to it again you can set up via the web browser a management interface for each vlan (up to 32 different IP addresses I think).

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    FN-GM's Avatar
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    How exactly are you chaning the IP address? Something like this

    En
    Conf t
    Int VLAN 1
    IP Address xxx.xxx.xxx.xxx 255.255.255.0
    no shut

    Might sound daft are you saving the running config?

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    Finish it with
    #copy run start
    That will save it.

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    catch21 (14th May 2013)

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    FN-GM's Avatar
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    Quote Originally Posted by sultan966 View Post
    Finish it with
    #copy run start
    That will save it.
    run the command WR its quicker

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    catch21 (14th May 2013)

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    Quote Originally Posted by FN-GM View Post
    How exactly are you chaning the IP address? Something like this

    En
    Conf t
    Int VLAN 1
    IP Address xxx.xxx.xxx.xxx 255.255.255.0
    no shut

    Might sound daft are you saving the running config?
    from what I recall...something like

    configure
    interface vlan 1
    ip address xxx.xxx.xxx.xx mmm.mmm.mmm.mm

    and exit, exit, exit

    ...then back onto the browser UI to save there.

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