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Network and Classroom Management Thread, DHCP Scope is running out in Technical; Yes, you need to delete the scope. Make sure you've written down your reservations and scope options first...
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    powdarrmonkey's Avatar
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    Yes, you need to delete the scope. Make sure you've written down your reservations and scope options first

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    dezt's Avatar
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    Quote Originally Posted by powdarrmonkey View Post
    Yes, you need to delete the scope. Make sure you've written down your reservations and scope options first
    That's exactly what I did.

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    powdarrmonkey's Avatar
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    Do you have anything set up like VLANs, routers, etc?

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    powdarrmonkey's Avatar
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    Did you not get your new scope from them then? If that's the case then yes, you should wait to hear from them.

    Quote Originally Posted by powdarrmonkey
    But you must ensure if you're part of a wider network (ie. check with your ISP) that you use a range they allocate you, not just make it up. Otherwise you will have all sorts of problems, and so will everyone else on the wider network.
    As you've just demonstrated.
    Last edited by powdarrmonkey; 5th August 2008 at 03:57 PM.

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    What's your default gateway for the 3.x addresses. The fact you can't ping local addresses is a bit worrying but it maybe that the client has not renewed it address from your new DHCP scope and still has an old 255.255.255.0. I would also check if your address scheme is allocated by the LA you really don't want to be using another schools addresses (thats assume you dont have NAT or a firewall infront of your internet connection)

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    Make sure the default gateway is setup correctly.

    For example our Vigor 3300V router/firewall will only accept connections on 192.168.0.x/22

    However we have 192.168.1.x/22, 192.168.2.x/22 and 192.168.3.x/22 that cannot access the router.

    (/22 = 255.255.252.0)

    DHCP > SCOPE > SCOPE OPTIONS > 003 (Router Name) set to the Router IP.

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    ahuxham's Avatar
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    Originally Posted by powdarrmonkey
    But you must ensure if you're part of a wider network (ie. check with your ISP) that you use a range they allocate you, not just make it up. Otherwise you will have all sorts of problems, and so will everyone else on the wider network


    If your router supports NAT, you can do anything you want, no need for authorization.

  8. #23

    powdarrmonkey's Avatar
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    @ahuxham: the default gateway doesn't matter in this case, packets within the same subnet are sent by broadcast. If the connection is from an LA, as it sounds, then they almost certainly provide the edge router and gateway so the OP won't be able to do anything with it anyway.

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