哪位高人解释一下瓜 ~`

[指着太阳说日]

什么是IP Address Classes喔 ~？

分成A B C `` 都代表什么意思 ？

随便用个IP段来解释下好了 ~ 218.65.65.123 ？

最后 octet 在网络中翻译成啥意思比较好撒 ？

雪地跪谢 ~``` :kiss:

 

[regal]

建议去下载'TCP/IP详解'来看看就全明白了, 很经典的书

 

[ha4]

查cisco ccna 1 and 2 里面的subnet 可以解释你这个问题。
这种论坛上，是说不清楚的

 

[foodbasic]

Class A - 0nnnnnnn hhhhhhhh hhhhhhhh hhhhhhhh


First bit 0; 7 network bits; 24 host bits

Initial byte: 0 - 127

126 Class As exist (0 and 127 are reserved)

16,777,214 hosts on each Class A

Class B - 10nnnnnn nnnnnnnn hhhhhhhh hhhhhhhh


First two bits 10; 14 network bits; 16 host bits

Initial byte: 128 - 191

16,384 Class Bs exist

65,532 hosts on each Class B

Class C - 110nnnnn nnnnnnnn nnnnnnnn hhhhhhhh


First three bits 110; 21 network bits; 8 host bits

Initial byte: 192 - 223

2,097,152 Class Cs exist

254 hosts on each Class C

Class D - 1110mmmm mmmmmmmm mmmmmmmm mmmmmmmm


First four bits 1110; 28 multicast address bits

Initial byte: 224 - 247

Class Ds are multicast addresses - see RFC 1112

Class E - 1111rrrr rrrrrrrr rrrrrrrr rrrrrrrr


First four bits 1111; 28 reserved address bits

Initial byte: 248 - 255

Reserved for experimental use