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  1. #1
    oBeY SiliconJon's Avatar
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    What is 0.0.0.0 ? 255.255.255.255 ?

    I learned something new today.

    0.0.0.0 is the IP address for the internet

    255.255.255.255 is THE broadcast address (no matter what your network address).

    I wonder if I will remember is tomorrow...better write it down.

  2. #2
    Goverment property now GroundZero3's Avatar
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    where did you learn this?

  3. #3
    Ultimate Member [Neo770]'s Avatar
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    Sounds abit far fetched to me.

  4. #4
    Goverment property now GroundZero3's Avatar
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  5. #5
    Ultimate Member mazdarx7-64's Avatar
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    255.255.255.255 is the broadcast address, but only for your network or subnet, not for the whole internet.
    BSOD.........
    The reason why I'll be drunk tonight.
    Are you a winner?

  6. #6
    Leader of the Crab People Redwolf's Avatar
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  7. #7
    Ultimate Member [Neo770]'s Avatar
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    I thought the braodcast for say 192.168.0.0/255.255.255.0 would be 192.168.255.255 and all 255's would be an not useable. Or do I need to go back to my CISCO books

  8. #8
    Ultimate Member mazdarx7-64's Avatar
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    neo you are right, my bad.
    BSOD.........
    The reason why I'll be drunk tonight.
    Are you a winner?

  9. #9
    Bringing Da Funk Gait_Keeper's Avatar
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    all alien to me.......but I'm learning
    Lord of the Low Frequencies

  10. #10
    oBeY SiliconJon's Avatar
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    I didn't mean the whole internet on the 255 one...but rather a usable broadcast address for your own network segment despite whatever accurate broadcast address may be appropriate for your network address.

    My machine doesn't have a conflict with 0.0.0.0 (Server 2003 & XP Pro), but seems to be using this address for the merky cloud of the internet. Or so class is teaching me.

    Ah, RFC3330...
    Last edited by SiliconJon; February 8th, 2005 at 06:35 PM.

  11. #11
    oBeY SiliconJon's Avatar
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    0.0.0.0/8 "This" Network

    0.0.0.0/8 - Addresses in this block refer to source hosts on "this"
    network. Address 0.0.0.0/32 may be used as a source address for this
    host on this network; other addresses within 0.0.0.0/8 may be used to
    refer to specified hosts on this network [RFC1700, page 4].

    Hmmm...RFC1700...
    Last edited by SiliconJon; February 8th, 2005 at 06:34 PM.

  12. #12
    Senior Member bailey's Avatar
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    kinda looks like IP version 6.0 addressing to me

  13. #13
    oBeY SiliconJon's Avatar
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    Ya know what my omniscient instructor at Vettercrock tought us:

    IPv4: 4 octets
    IPv6: 6 octets

    FYI for those who don't know, that was incredibly wrong.
    IPv6 is 128-bits represented by eight blocks of 16-bits
    IPv4 is 32-bits (still today's standard for IP addressing) and is represented by four blocks of 8-bits

    v6 is written in hexidecimal values
    v4 is written in base10 values

    Good Reading

  14. #14
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    Wink

    0.0.0.0 is the default Route ie. any packet containing will be routed or dent via this IP. Whilst 255.255.255.255 is a global broadcast address.

  15. #15
    oBeY SiliconJon's Avatar
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    Quote Originally Posted by mazdarx7-64 View Post
    255.255.255.255 is the broadcast address, but only for your network or subnet, not for the whole internet.
    What IS the address to broadcast to the entire internet? I think a wake up call is necessary.

  16. #16
    Ultimate Member SpaceSquad's Avatar
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    Oh hey 2005

    Had a laugh reading this.
    -Space

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