return to first page linux journal archive
keywordscontents

Table 7. Analysis of 256 Values of Last Byte

Last Byte What Why
Addresses Happens
to Them
0 invalid first subnet address
1-30 valid hosts on first subnet
31 invalid broadcast address of first subnet
32 invalid first <\#174> second, etc.
224 invalid eighth subnet address
225-254 valid hosts for eighth subnet
255 invalid broadcast for eighth subnet