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Old 01-03-2005, 11:59 PM   #1
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Default Network Suffix

All right, the answer to this question has elluded me for awhile, so I thought I'd ask for help.

Suppose I'm part of the network 192.168.0.0/24. In a general, what does the /24 mean?

I see this all around, but I never know what it means. If anyone can shed some light, It'll be greatly appreciated.
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Old 01-05-2005, 03:54 AM   #2
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Default Re: Network Suffix

has soemthing to do with the class of IP

http://www.ralphb.net/IPSubnet/index.html
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Old 01-05-2005, 01:05 PM   #3
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Default Re: Network Suffix

ya its the subnet mask means if my understanding is correct that its 255.255.255.0 so basically the number is how many 1s bits are in the subnet mask in binary notation.
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Old 01-05-2005, 07:09 PM   #4
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Default Re: Network Suffix

Ahh, I thought it had something to do with the subnet, but I wasn't sure.

Thanks for the info!
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Old 01-09-2005, 06:14 PM   #5
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Default Re: Network Suffix

Yes as Vegaslon said above and to add, it is the number of bits in the Subnet Mask as per say 24 in a class C is 255.255.255.0. You have 24 bits reservered for Subnet Mask and you may borrow from the 8 bits in the host field too create more subnets on a LAN.

Take a peak

http://www.ralphb.net/IPSubnet/index.html
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Old 01-15-2005, 10:17 AM   #6
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Simply put, I hope:

subnet /8 = 255.0.0.0 11111111.0000000.00000000.00000000
available hosts = 16777214

subnet /16 = 255.255.0.0 11111111.11111111.00000000.00000000
available hosts = 65534

subnet /24 = 255.255.255.0 11111111.11111111.11111111.00000000
available hosts = 254

and so on...

In your question the following apply's,

subnet /24 = 255.255.255.0 11111111.11111111.1111111.00000000
Wild Card = 0.0.0.255 00000000.00000000.0000000.11111111

With your wild card /24 here is how it works out:

Network address = 192.168.0.0
First usable address = 192.168.0.1
Last usable address = 192.168.0.254
Broadcast address = 192.168.0.255

You will have 254 availabls host addresses.

Subnetting can be tricky so this is just really simplified without going through the bits here...
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