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how to subnet 100.100.100.0/24

Discussion in 'General Cisco Certifications' started by NETWORKMANIAC, Aug 15, 2008.

  1. NETWORKMANIAC

    NETWORKMANIAC New Member

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    hi all i would like to know how to subnet
    100.100.100.0/24
    includin
    #hosts
    #subnets
    network address
    broadcast address
    and range also



    can ne body help with detailed solution of this problem?????????????????
     
  2. craigie

    craigie Terabyte Poster

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    Well, the subnet mask would be 255.255.255.0.

    Might be an idea to say hello in the New Members Introduction :)
     
    Certifications: CCA | CCENT | CCNA | CCNA:S | HP APC | HP ASE | ITILv3 | MCP | MCDST | MCITP: EA | MCTS:Vista | MCTS:Exch '07 | MCSA 2003 | MCSA:M 2003 | MCSA 2008 | MCSE | VCP5-DT | VCP4-DCV | VCP5-DCV | VCAP5-DCA | VCAP5-DCD | VMTSP | VTSP 4 | VTSP 5
  3. NETWORKMANIAC

    NETWORKMANIAC New Member

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    thanx a lot buddy......................


    and a heartfelt hello..................................
     
  4. tripwire45
    Honorary Member

    tripwire45 Zettabyte Poster

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  5. Mr.Cheeks

    Mr.Cheeks 1st ever Gold Member! Gold Member

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  6. tripwire45
    Honorary Member

    tripwire45 Zettabyte Poster

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    I beat you to it, Mr. Cheeks. :biggrin
     
    Certifications: A+ and Network+
  7. Mr.Cheeks

    Mr.Cheeks 1st ever Gold Member! Gold Member

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    Sure you did Mr. Site Administrator... ...i *believe* you :tune:wink:
     
  8. r.h.lee

    r.h.lee Gigabyte Poster

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    NETWORKMANIAC,

    How you subnet that network depends on the design requirements of:
    1. Required number of subnets or
    2. Required number of hosts per subnet or
    3. Required number of subnets AND number of hosts per subnet
    4. Other (to include variable length subnet masking)
     
    Certifications: MCSE, MCP+I, MCP, CCNA, A+
    WIP: CCDA
  9. NETWORKMANIAC

    NETWORKMANIAC New Member

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    yup buddy thats ok,but further how you continue with all that stuff wen you have to make a chart includin range also?????????????????????/
     
  10. r.h.lee

    r.h.lee Gigabyte Poster

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    NETWORKMANIAC,

    The "...how you continue..." completely depends on which case as listed above under 1., 2., 3.,, or 4. So which case is this subnetting of network 100.100.100.0/24 for?
     
    Certifications: MCSE, MCP+I, MCP, CCNA, A+
    WIP: CCDA
  11. NETWORKMANIAC

    NETWORKMANIAC New Member

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    the first three.............
     
  12. r.h.lee

    r.h.lee Gigabyte Poster

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    NETWORKMANIAC,

    Here's how this thing works. You choose 1 or 2 or 3 or 4. You can't choose more than one. So which _one_ do you choose?
     
    Certifications: MCSE, MCP+I, MCP, CCNA, A+
    WIP: CCDA
  13. dreec

    dreec Nibble Poster

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    HI networkmanic, if you want to learn to subnet in less than 10 minutes, try the attached doc
     

    Attached Files:

    Certifications: To many to list here, to few to matter
    WIP: None
  14. dreec

    dreec Nibble Poster

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    If you haven't got the time, but need to know the answers try this one;
     

    Attached Files:

    Certifications: To many to list here, to few to matter
    WIP: None
  15. kevicho

    kevicho Gigabyte Poster

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    You can have (*Edit, this is when you do not use variable Length Subnetting, as all the possibilities would make the forum server run out of mysql database space! - Ok j/k)

    1 Subnet

    which is

    100.100.100.0 - 100.100.100.255
    usable addresses range from
    100.100.100.1 - 100.100.100.254
    Netmask
    255.255.255.0 or /24

    2 subnets

    100.100.100.0 - 100.100.100.127
    100.100.100.128 - 100.100.100.255

    usable addresses range from
    100.100.100.1 - 100.100.100.126
    and
    100.100.100.129 - 100.100.100.254
    Netmask
    255.255.255.128 or /25

    4 subnets

    100.100.100.0 - 100.100.100.63
    100.100.100.64 - 100.100.100.127
    100.100.100.128 - 100.100.100.191
    100.100.100.192 - 100.100.100.255

    usable addresses range from
    100.100.100.1 - 100.100.100.62
    100.100.100.65 - 100.100.100.126
    100.100.100.129 - 100.100.100.190
    100.100.100.193 - 100.100.100.254
    Netmask
    255.255.255.192 or or /26

    and there are more, (up until you get to a /30 address - which is commonly used with VLSM and router connections (as they only need 2 hosts).

    Basically you will need to get a grasp of IP, bit notation (the 11110000), Broadcast and Network addresses and much more its quite a learning curve.

    And for the CCNA exam you will need to be FAST.
     
    Certifications: A+, Net+, MCSA Server 2003, 2008, Windows XP & 7 , ITIL V3 Foundation
    WIP: CCNA Renewal
  16. Labrat636

    Labrat636 New Member

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    A 24 bit subnet mask on a class A network address is different from a 24 bit subnet mask on a class C network address. Class rules specify a 24 bit subnet mask for class C network addresses only. In this class A address example, there would be 65,536 subnets with 256 hosts each. Usable hosts in each subnet are 100.0.0.1 - 100.0.0.254, 100.0.1.1 - 100.0.1.254, 100.0.2.1 - 100.0.2.254,............. 100.254.254.1 - 100.254.254.254. Somebody please correct me if I am mistaken here. This is how I understand it, and if I am wrong, I need to know.
     

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