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Thread: Cable modems and no Static IP

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    Default Cable modems and no Static IP

    I've been told that a Cable Modem cannot be assigned a Static IP, is this the case?. What's different about a DSL service/Modem that allows a Static IP?

    Thanks.



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    No, I would say its crock of *****

    When you say static IP, private or public?
    Also, I would assume cable meaning ADSL?

    Im not sure about 56k, but even ISDN can have a static IP so anything above that, the im sure you can have a static IP.

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    <Also, I would assume cable meaning ADSL?>

    No Cable and ADSL are very different - have a look at this
    If you have a static or dynamic IP is purely at the discretion of the Service provider.
    Optus are notorious for saying NO but Telstra can be occasionally coerced especially if you are on a business plan
    In hindsight I should have posted my Facebook status as: "I've blown the head gasket on my 1997 XR3i" rather than "I've just buggered a 14 year old escort".
    The police still haven't seen the funny side, my lap top's been confiscated and the wife has gone off to her mum's.

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    Static on a commercial account if you want to pay for it, my CABLE modem ip very seldom changes,mine had not changed for years, but recently they did some repairs around the corner which disconnected the connection and it assigned itself a new address which created problems for all my boxes etc
    Last edited by allover; 23-08-15 at 02:53 PM.
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    Sorry, by Cable I'm talking about telstras HFC network, the specification is often referred to as DOCSIS, not ADSL. I've had customers on Cable ask their ISP's and apparently you can't have one. I found this discussion
    that talks about it -



    I was curious if anyone knew why?

    I've read that Cable modems are managed using their MAC address, where as ADSL is managed with the PPPOE protocol and that allows the IP to be statically assigned.

    Can anybody elaborate?

    Thanks.

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    External IP deanfourie.

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    If you are on a personal account, ring Telstra and en-quire about a commercial account with a static ip. I remember reading about this a few years back
    There is a fine line between "Hobby" and "Madness"

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    I'm on cable (Telstra) with a commercial account (at the office) - I have static.
    and on a domestic cable with Telstra at home - where they won't allow me to have a static - yet I know customers of mine with cable / domestic with static IP's - go figure
    In hindsight I should have posted my Facebook status as: "I've blown the head gasket on my 1997 XR3i" rather than "I've just buggered a 14 year old escort".
    The police still haven't seen the funny side, my lap top's been confiscated and the wife has gone off to her mum's.

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    You can enter a static account from memory but it will change if there is a break in transmission etc and then you have to reset it again
    There is a fine line between "Hobby" and "Madness"

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    But if you have internet, then there is routing taking place correct?

    So for this reason, surely your ISP can issue a static IP, no matter how you are receiving internet.

    Just my thoughts

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