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IPV6¹× QOS °ü·Ã ÀÚ·á

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ANTON  2011-03-23 00:39:40, Á¶È¸ : 192, Ãßõ : 47
- Download #1 : HADER_2.jpg (31.7 KB), Download : 20


7. Extension Header

  IPv6 ÆÐŶ Çì´õÀÇ 8°³ ÇÊµå ´ÙÀ½¿¡´Â Extension Header³ª ÆäŶÀÇ µ¥ÀÌÅÍ ºÎºÐÀÌ ¿À°ÔµÊ.
  Extension Header´Â Á¸ÀçÇÒ °æ¿ì °³´ç 64bit¿¡ ¸ÂÃß¾î Áø´Ù.
  Extension HeaderÀÇ ¼ö´Â Á¤ÇØÁ® ÀÖÁö ¾Ê´Ù.

  ¨ç Hop By Hop Options : ÆÐŶÀÇ ¸ðµç °æ·Î¿¡ ÀÖ´Â ¸ðµç Hop¿¡¼­ ÇÁ·Î¼¼½ÌÇÑ´Ù.

  ¨è Destination Options : ÃÖÁ¾ ¸ñÀûÁö¿Í ¶ó¿ìÆà Çì´õ¿¡¼­ ÁöÁ¤µÈ Áּҵ鿡¼­¸¸
                                     ÇÁ·Î¼¼½ÌµÊ ESPÇì´õ µÚ¿¡ À§Ä¡ÇÒ ¼öµµ ÀÖ¸ç À̶§´Â ¿ÀÁ÷
                                     ÃÖÁ¾ ¸ñÀûÁö¿¡¼­¸¸ ÇÁ·Î¼¼½ÌµÊ.

  ¨é Routing Header : ÆÐŶÀÌ ¼ö½Å½Ã ¸ñ·Ï¿¡ ÀÖ´Â °¢ Áß°£ ¶ó¿ìÅÍ´Â ¸ñÀûÁö ÁÖ¼Ò¸¦
                                ¸ñ·Ï»óÀÇ ´ÙÀ½ ¶ó¿ìÅÍ·Î ±³Ã¼ÇÔÀ¸·Î½á ¶ó¿ìÆà Çì´õ¸¦ ÇÁ·Î¼¼½ÌÇÔ.
    
  ¨ê Fragment Header :  ÀÌ Çì´õ´Â ³ëµå°¡ °æ·Î MTUº¸´Ù Å« ÆÐŶÀ» Àü¼ÛÇØ¾ß ÇÒ ¶§
                                  »ç¿ëµÈ´Ù.

  ¨ë Authentication Header & ESP Header : ÆÐŶÀÇ ÀÎÁõ, ¹«°á¼º ±×¸®°í ºñ¹Ð¼ºÀ» Á¦°ø
                                                           Çϱâ À§ÇØ IPSec ³»¿¡¼­ »ç¿ëµÈ´Ù.

  ¨ì ICMPv6ÆÐŶ :  ICMP ¸ñÀûÁö µµ´Þ ºÒ°¡¸Þ½ÃÁö¿Í °°Àº error massage, ICMP ¿¡ÄÚ
                           ¿äû ¹× ÀÀ´ä ¸Þ½ÃÁö °°Àº Á¤º¸ ¸Þ½ÃÁö¸¦ »ý¼º.
                           Ãß°¡ÀûÀ¸·Î IPv6 Neighbor Discovery process, °æ·Î MTU Ž»ö,
                           MLD ÇÁ·ÎÅäÄÝ(Multicast Listener Discovery)¿¡ »ç¿ëICMPv4¿Í
                           ¸¶Âù°¡Áö·Î ICMPv6Àº ¹æÈ­º®¿¡ Àû¿ëµÈ º¸¾È Á¤Ã¥¿¡ ÀÇÇØ Â÷´ÜµÇ´Â
                           °æ¿ì°¡ ¸¹´Ù.
                           - ICMP¸¦ ±â¹ÝÀ¸·Î ÇÏ´Â °ø°ÝÀÌ ºó¹øÇÏ°Ô ¹ß»ýÇϱ⠶§¹®.
                           -ICMPv6Àº IPSec ÀÎÁõ ¹× ¾Ïȣȭ¸¦ »ç¿ëÇÒ ¼ö ÀÖ´Ù.


8. Header Checksum
IPv4¿¡¼­ Header Checksum Àº 16bit Çʵå·Î Çì´õ°¡ Á¦´ë·Î Àß °¬´ÂÁö¸¦ È®ÀÎÇÏ´Â ¿¡·¯Ã¼Å© ±â´ÉÀ̾ú´Ù.
±×·±µ¥ IPv6¿¡¼­´Â ÀÌ header checksum ÀÌ ¾ø¾îÁ® Çì´õÇʵ尡 °£´ÜÇØÁö°í
Çì´õý¼¶À» À§ÇÑ ½Ã°£ÀÌ Àý¾àµÇ¾î ¶ó¿ìÆÃÀÇ ¼º´ÉÀÌ Çâ»ó ¿¡·¯Ã¼Å©´Â ÀÌÁ¦ Link layer ¿Í Transport Layer ¿¡¼­ ¿¡·¯Ã¼Å©
¸¦ ÇÔ.

9. Mobility
   À̵¿Çϸ鼭µµ ³×Æ®¿öÅ© Á¢¼ÓÀÌ À¯ÁöµÇµµ·Ï ÇØÁÖ´Â ³×Æ®¿öÅ© Mobiltiy ±â´ÉÀÌ IPv6¿¡¼­´Â ±âº»ÀåÂø
    Mobile IP enables mobile devices without breaking current connections  But in IPv4, Mobility is a new function
    that must be added.

10. IPsec
ÀÌ IPSec Àº ¹°·Ð IPv4¿¡¼­µµ Áö¿øÀÌ °¡´ÉÇßÁö¸¸ , IPv6¿¡¼­´Â Çʼö ¿ä¼Ò.
ÀÌ Àǹ̴ ÀÌÁ¦ ¾ðÁ¦ ¾îµð¼­³ª IPSec ÀÌ ¼³Á¤µÇ¾î ÀÖÀ¸¸ç, Áï½Ã È°¿ë°¡´ÉÇÏ´Ù´Â °Í µû¶ó¼­ ´õ¿í ¿Ïº®ÇÑ º¸¾ÈÀÌ ÀÌ·ç¾îÁ³´Ù.
Extension Header¿¡ Çì´õ¹øÈ£°¡ 50¹ø°ú 51¹øÀÏ °æ¿ì  °¢°¢, Encapsulating Security Payload ¿Í Authentication Header °¡ ³ª¿À°Ô µÇ¸ç,  ¿©±â¼­ ÆÐŶÀÇ º¸¾ÈÀ» Ã¥ÀÓÁ®ÁÜ.


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