IP addressing ...

[magsam]

hi guys ...

i have a small question ... i feel like it is hard to understand ip addressing ... and i need any advise on this problem ... so would u please reply me and tell me spme tips that would help me ... of course in general ... u can tell me a name of a handy book or direct me to a very good site that i can learn ip from it ...

thank u very much ...
kareem

 

[ElijahBaley]

Make sure that you understand basic Binary to decimal conversion before you get involved with ip classes and subnet masks.

FACTS:

8 BITS = 1 BYTE

BITS can be either on or off

10100000

the decimal value of each bit from left to right is:

128/64/32/16/8/4/2/1

So the above octet or byte (8 bits) has a decimal value of 160.

You can see this by adding up the BITS that are switched on:
10100000

10100000
1 3
2 2
8

128+32=160

A IP address is made up of four of these octets or bytes which is 32 BITS in total

10100000.10100000.00000001.00000101

these four octets are represented in dotted decimal:

160.160.1.5

Hope this helps,

You can try

http://www.learntosubnet.com

for some slide show presentations, but I found the best way is to sit down with a pencil and paper and do the conversions from DEC to BIN and the other way around and you will see patterns which will help when you go on to subnetting,

Good Luck

EB

 

[bythespy]

Here is a subnet chart I put online.

http://www.avvidug.org/subnets.htm

Mspivey
CCNP