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Subnetting

DerekAustin26DerekAustin26 Member Posts: 275
in CCNA & CCENT
Okay, I've read so much about Subnetting.
Everywhere you read, IP Addresses between 128 & 192 = Class B Subnet

At work we have this Network Diagram. One of the Core Layer 3 Switches has an IP of 149.187.15.3 & subnet of 255.255.255.0

This is just a Class B IP using a Class C Subnetting Scheme correct?

Just like you can have a Class A IP that can use a Class B or C Subnetting Scheme.

I believe the Subnets would range from 255.255.0.0 - 255.255.255.254

The block is 1 which is in the 3rd octet - 255.255.X.0

Let me know if this looks correct?

Thanks,
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    dynamikdynamik Banned Posts: 12,312 ■■■■■■■■■□
    Subnetting breaks larger networks into smaller networks, so yes, that is correct.
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    blackninjablackninja Member Posts: 385
    DerekAustin26 wrote: »
    Okay, I've read so much about Subnetting.
    Everywhere you read, IP Addresses between 128 & 192 = Class B Subnet

    At work we have this Network Diagram. One of the Core Layer 3 Switches has an IP of 149.187.15.3 & subnet of 255.255.255.0

    This is just a Class B IP using a Class C Subnetting Scheme correct?

    Just like you can have a Class A IP that can use a Class B or C Subnetting Scheme.

    I believe the Subnets would range from 255.255.0.0 - 255.255.255.254

    The block is 1 which is in the 3rd octet - 255.255.X.0

    Let me know if this looks correct?

    Thanks,


    Take a look at Learn To Subnet:  A Free, Lecture-Based Presentation on IP Addressing and Subnetting
    Currently studying:
    CCIE R&S - using INE workbooks & videos

    Currently reading:
    Everything. Twice ;)
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    DerekAustin26DerekAustin26 Member Posts: 275
    Thanks Dynamik.

    Blackninja, I've already been there.. I'm just asking if it looks correct or not.

    I'm pretty confident it's correct. I've studied Subnetting pretty intensively.
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    blackninjablackninja Member Posts: 385
    DerekAustin26 wrote: »

    I'm pretty confident it's correct. I've studied Subnetting pretty intensively.


    For the record the subnets would be:

    149.187.0.0 - 149.187.255.255 /24

    256 subnets with 254 valid hosts per subnet ;)
    Currently studying:
    CCIE R&S - using INE workbooks & videos

    Currently reading:
    Everything. Twice ;)
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    DerekAustin26DerekAustin26 Member Posts: 275
    blackninja wrote: »
    For the record the subnets would be:

    149.187.0.0 - 149.187.255.255 /24

    256 subnets with 254 valid hosts per subnet ;)

    yes of course, My bad, I dont know why i put "255.255.0.0" & "255.255.255.254"

    My fingers went into auto-pilot on the "255's"

    So yes, u caught me ;)


    Thanks for noticing
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