MY CCIE JOURNEY

i found these techniques in subnetting secrets and found them very effective hoping that these will help you too


firstly you need to have remember two tables ...

1.basic table of first host , last host table

2.the crucial one to all calculation table ...

here are the two


subnet ----------firsthost------------lasthost---------------broadcast




hence in this way this can be determined




the crucial one


bits---------128------64-------32-------16----8----4------2-----1
subnets


128

192

224

240

248

252

254

255


powers of 2 --------- subnets--------------hosts (-2)

2

4

8

16

32

64

128


256


512


1024


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let me check with the formatter , if it comes correctly i will go ahead explaining the
concept if not i will host it to image shack and explain it

regards
RAKESH