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IP & Subnetting

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IP&Subnetting
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 1. IP address

1.1 Classful IP Addressing

°¡) Class A Networks (/8 Prefixes) 

³ª) Class B Networks (/16 Prefixes)

´Ù) Class C Networks (/24 Prefixes)

¶ó) Class D¸¶) Class E 

¹Ù) Private IP address

2. Subnetting

2.1. °³¿ä             

°¡) SubnettingÀåÁ¡

³ª) Subnet Mask

´Ù) SubnetÇ¥½Ã¹æ¹ý 

¶ó) All-0s Subnet and All-1s Subnet

¸¶) B Class Subnet Example

º»¹®/³»¿ë
1. IP address

IP packetÀº °æ·Î¸¦ ÅëÇØ Destination Address±îÁö packetÀ» Àü´ÞµÉ ¼ö ÀÖµµ·Ï Source Address¿Í Destination Address¸¦ °®°í ÀÖ´Ù.

1.1 Classful IP Addressing
IP Address´Â Network Address¿Í Host Address·Î ±¸¼ºµÇ¾î ÀÖÀ¸¸ç, IP AddresÀÇ ±æÀÌ´Â 4Bytes Áï 32bits·Î µÇ¾î ÀÖ´Ù. IP Address¸¦ Ç¥±âÇÒ ¶§´Â °¢ ByteÀÇ °ªÀ» 10Áø¼ö·Î Ç¥±âÇϴµ¥ Àüü°¡ 4BytesÀ̹ǷΠ4°³ÀÇ 10Áø¼ö°¡ 164.124.116.5 ¸ð¾çÀ¸·Î ºÐ¸®µÇ¾î Ç¥±âµÈ´Ù. 1 Bytes°¡ ³ªÅ¸³¾ ¼ö ÀÖ´Â °ªÀÇ ¹üÀ§´Â 0 ~ 255±îÁöÀ̹ǷΠ°¢ ÀÚ¸®ÀÇ 10Áø¼ö´Â 0~ 255±îÁö°¡ °¡´ÉÇϸç, µû¶ó¼­ IP AddressÀÇ ¹üÀ§´Â 0.0.0.0 ~ 255.255.255.255 ±îÁö¶ó°í ¸»ÇÒ ¼ö ÀÖ´Ù.  
           
08162431IP address = Network Address + Host Address
ÀÌ·¯ÇÑ IP Address´Â 3°¡Áö·Î ºÐ·ùµÇ´Âµ¥ ù¹øÂ°´Â 4BytesÁß Network Address°¡ 1Bytes¸¦ Â÷ÁöÇÏ´Â Class A, µÎ¹øÂ°´Â Network Address°¡ 2 Bytes¸¦ Â÷ÁöÇÏ´Â Class B, ¼¼¹øÂ°´Â Network Address°¡ 3Bytes¸¦ Â÷ÁöÇÏ´Â Class CÀÌ´Ù.  
 
AClass BClass Host Address ºÎºÐ¿¡¼­µµ bit¿­ÀÌ¡¦(»ý·«)



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Date : 2014-06-06
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