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purpose of broadcast and network id ? RRS feed

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    hi, let say i have been given an ip address where i need to do sub-netting. ex:
    x.x.x.x /28. after doing the sub-netting i would end up with the 'Network ID', range of IP that can be used and the 'Broadcast ID'.
    So, the range of ip's i know that is for the hosts..printers, computers ..etc. where do i use the broadcast and network id? What is for exactly?
    can someone help me please. Thanks in advance.

    ex:
    network id    range      broadcast id
    x.x.x.16        17-30        x.x.x.31

    Chris Jeret Web Administrator

    Tuesday, June 4, 2013 2:51 PM
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    The broadcast address allows data to be sent to all IPs in the subnet.  The network ID identifies all hosts that are on the same network.  You need to split it out into binary to understand.  The "all-ones" broadcast address, and the first grouping of bits to identify what network the hosts are on when subnetting.

    This article might help some.

    http://technet.microsoft.com/en-us/library/cc958834.aspx

    Be kind and Mark as Answer if I helped.

    Tuesday, June 4, 2013 3:41 PM
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    Hi,

    Beside the article that Chris mentioned you can also have a look at this youtube series explaining the Networking basics:

    http://www.youtube.com/watch?v=TVvEheZVwdg

    When you see answers and helpful posts, please click Vote As Helpful, Propose As Answer, and/or Mark As Answer

    MCSE:Server Infrastructure, MCSE:Desktop Infrastructure, MCSA Server 2012, Citrix CCIA & CCEE, Cisco CCNA, VMware VCP 3/4/5 Blog: http://www.citrix-guru.com and http://www.rds-support.eu Twitter: @dnyvandam


    Wednesday, June 5, 2013 7:45 AM
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    Hi,

    thanks fr the reply but i don't think you understood my question was:

    i do understand the calculation and the binaries. my question was where or how do i actually use the broadcast id and the network id, if so where do i actually use them. where in network do i use these? is it for the subnetmask or router....etc ?

    thanks

    Chris Jeret Web Administrator

    Wednesday, June 5, 2013 8:32 AM
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    You don't "use" them as they are reserved and not for clients. 

    Be kind and Mark as Answer if I helped.

    Wednesday, June 5, 2013 1:27 PM
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