Computer Problems? Computing.Net has over 1,000,000 posts about all things technology related! Over 90% answered within 24 hours! Click here to start participating now! Also, be sure to check out the New User Guide.
IP CIDR Subnetting Assistance
Name: computingMonk Date: April 14, 2006 at 10:11:01 Pacific OS: WinXP CPU/Ram: n/a Product: n/a
Comment:
I have a quick question about CIDR computations. When computing a subnet mask \number the CIDRs are easy to compute if the binary bits are in order (11100000 = 224 [/3] ; 11111000 = 248 [/5]) but how do you figure out a CIDR number if the binary is something like 11001011...which would represent a .203 octet decimal number in a subnet mask? Thanks!
Name: Curt R Date: April 14, 2006 at 10:46:09 Pacific
Reply:
You can't have a subnet mask like that.
0
Response Number 2
Name: jefro Date: April 14, 2006 at 13:55:53 Pacific
Reply:
While I agree that there are calculators out there that allow it, in practice you would find that almost no or no hardware supports that. It could happen and you can put those numbers in as a subnet mask on a computer the problem is not the computer but you wouldn't be able to route it. So in effect there was no reason to subnet it.
Summary: i am stuck and would really appreciate any assistance... i have 3 xp machines all with latest updates. all of a sudden my network with ics enabled dropped. my computer has a usb dsl modem on pppoe and...
Summary: I am a MCSE but TCP/IP is not my elective subject. I really got a problem with TCP/IP, I don't know how subnet work, what is the correct range, how the route and etc... Does anyone know of any online...
Summary: The information you want is freely available on the internet and a search of any search engine using the string "subnetting" or "supernetting" will yield enough hits to keep you reading for a while. I...
0 
