Ask Experts Questions for FREE Help !
Ask
    baby_iCe's Avatar
    baby_iCe Posts: 6, Reputation: 1
    New Member
    		  
    #1

    Jul 30, 2007, 09:20 PM
    Classless subnetting
    what is classless subnetting? is it similar to CIDR? can anyone help me? thanx!
    cajalat's Avatar
    cajalat Posts: 469, Reputation: 66
    Full Member
    		  
    #2

    Jul 31, 2007, 12:12 AM
    Classless is the same thing as CIDR. More definitive information here http://www.ietf.org/rfc/rfc1519.txt
    baby_iCe's Avatar
    baby_iCe Posts: 6, Reputation: 1
    New Member
    		  
    #3

    Jul 31, 2007, 12:44 AM
    Thank you very much!
    cajalat's Avatar
    cajalat Posts: 469, Reputation: 66
    Full Member
    		  
    #4

    Jul 31, 2007, 12:50 AM
    I just realized that RFC 1519 is obsoleted by RFC 4632 as of last year but I think for a primer its good reference.
    retsoksirhc's Avatar
    retsoksirhc Posts: 912, Reputation: 71
    Senior Member
    		  
    #5

    Aug 7, 2007, 06:16 AM
    Well... I wouldn't say that they're technically the same thing. You could have a CIDR number of /8 on a 10.1.1.0 network, and it would still be classful.

    Classless subnetting is basically when you have a range of IP addresses for your subnet that falls out of a specific IP class.

    Class A: The first number is from 1 to 126, the subnet mask is 255.0.0.0 (CIDR # is 8)
    Class B: The first number is from 128 to 191, Subnet mask 255.255.0.0 (CIDR 16)
    Class C: The first numebr is from 192 to 223, Subnet mask 255.255.255.0 (CIDR 24)

    If you mix and match these, then it's called a classless subnet, because it doesn't call into any specific class. If you follow one specific class on both IP and subnet, then it is classful.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Classless Subnetting [ 4 Answers ]

How do I determine the maximum number of subnets of a classless address with the prefix /x? Example: Given the prefix /10, What is the maximum number of subnets? How do I determine this?

Classless Society [ 4 Answers ]

Is a classless society possible? Marx suggested it is under communism. It seems that his idealism exceeded the bounds of the attainable.

Subnetting help needed [ 2 Answers ]

Please don't ask or expect us to do your homework assignments for you. Your instructor gave the assignment for YOU to do so you can learn from them. The answers to these questions should be in your texts or class notes. Or you could use the vast resources of the WEB to do your research. I suggest...

Subnetting for WAN [ 1 Answers ]

In a WAN situation can I have all routers (3 different cities) using Class B IP adds 10.x.x.x all servers at the 3 locations using Class B 10.x.xx.xx and work stations using class B 172.31.x.x but putting everything under the same subnet mask

View more questions Search