ÇѱÛÁ¦¸ñ(Korean Title) |
SCTPÀÇ ¸ÖƼȣ¹Ö Ư¼º¿¡ ´ëÇÑ ¼º´É Æò°¡ |
¿µ¹®Á¦¸ñ(English Title) |
Performance Evaluation on SCTP multi-homing Feature |
ÀúÀÚ(Author) |
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¿ø¹®¼ö·Ïó(Citation) |
VOL 11-C NO. 02 PP. 0245 ~ 0252 (2004. 04) |
Çѱ۳»¿ë (Korean Abstract) |
SCTP´Â TCP¿Í ¸¶Âù°¡Áö·Î ¿¬°á ÁöÇâÀûÀÌ¸ç ½Å·Ú¼º ÀÖ´Â µ¥ÀÌÅÍÀÇ Àü¼ÛÀ» À§ÇÑ Àü¼Û °èÃþ ÇÁ·ÎÅäÄÝÀÌ´Ù. SCTP´Â ¿À·ù ¹× Ç÷οì Á¦¾î µî ¸¹Àº ºÎºÐ¿¡ ÀÖ¾î¼ TCPÀÇ ¹æ½ÄÀ» ±×´ë·Î µû¸£¸ç, °Å±â¿¡ ´õÇÏ¿© ¸ÖƼ½ºÆ®¸®¹Ö°ú ¸ÖƼȣ¹Ö Ư¼ºÀ» °¡Áø´Ù. ÀÌ ³í¹®¿¡¼´Â TCP¿Í ´Ù¸¥ ´ëÇ¥ÀûÀΠƯ¡µé Áß ¸ÖƼȣ¹ÖÀÌ ¼º´É¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» »ìÆì º¸¾Ò´Ù. ¸ÕÀú ¸ÖƼȣ¹ÖÀ» Áö¿øÇÏ´Â SCTP¿Í ±×·¸Áö ¾ÊÀº °æ¿ìÀÇ SCTP³ª TCP Reno, TCP SACKÀÇ ¼º´ÉÀ» ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ ºñ±³ÇÏ¿´´Ù. ¶ÇÇÑ, ¸ÖƼȣ¹ÖÀ» Áö¿øÇÏ´Â °æ¿ì¿¡ SCTPÀÇ ÀçÀü¼Û Á¤Ã¥ÀÌ ¼º´É¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» »ìÆ캸¾Ò´Ù. ÇÁ·ÎÅäÄÝ°£ÀÇ ¼º´É ºñ±³¸¦ ÅëÇؼ´Â SCTP°¡ »ç¿ëÇÏ´Â ¸î °¡Áö È¥ÀâÁ¦¾î ¸ÞÄ¿´ÏÁò Ư¡À¸·Î ÀÎÇØ SCTP°¡ TCP Reno³ª TCP SACK¿¡ ºñÇØ Çâ»óµÈ ¼º´ÉÀ» º¸ÀÓÀ» È®ÀÎÇÒ ¼ö ÀÖ¾úÀ¸¸ç, ƯÈ÷ ¸ÖƼȣ¹ÖÀ» Áö¿øÇÏ´Â °æ¿ìÀÇ SCTP°¡ °¡Àå ªÀº Áö¿¬À» °¡ÁüÀ» È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ, ¸ÖƼȣ¹ÖÀ» Áö¿øÇÏ´Â °æ¿ì ÇöÀçÀÇ SCTPÀÇ ÀçÀü¼Û Á¤Ã¥ÀÌ ÇÁ¶óÀ̸Ӹ® °æ·Î¿Í ´ëü °æ·Î°£ÀÇ °æ·Î Ư¼ºÀÇ µû¶ó ¼º´É ÀúÇϸ¦ °¡Á®¿Ã ¼ö ÀÖ´Â ÀáÀçÀûÀÎ ¹®Á¦Á¡À» °¡ÁüÀ» È®ÀÎÇÏ¿´´Ù. µû¶ó¼ ÀçÀü¼ÛÀ» À§ÇÑ °æ·Î ¼±Åÿ¡ ÀÖ¾î¼ ´ëü °æ·ÎÀÇ »óÅ ÆľÇÀÌ Áß¿äÇÑ ¿ä¼ÒÀ̸ç À̸¦ À§ÇÑ ¹æ¾ÈÀÌ ÇÊ¿äÇÒ °ÍÀÌ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Stream Control Transmission Protocol(SCTP) is a new connection-oriented, reliable delivery transport protocol operating on top of an unreliable connectionless packet service such as IP. It inherits many of the functions developed for TCP, including flow control and packet loss recovery functions. In addition, it also supports transport layer multihoming and multistreaming. In this paper, we study the impact of multi-homing on the performance of SCTP. We first compare performance of single-homed SCTP, multi-homed SCTP, TCP Reno and TCP SACK. We, then describe potential flaw in the current SCTP retransmission policy, when SCTP host is multihomed. Our Results show that SCTP performs better than TCP Reno and TCP SACK due to several changes from TCP in its congestion control mechanism. In particular, multi-homed SCTP shows the best result among the compared schemes. Through experimentation for multi-homed SCTP, we found that the current SCTP retransmission policy may deteriorate the perfomance when the retransmission path is worse than the original path. Therefore, the condition of retransmission path is a very important factor in SCTP performance and a proper mechanism would be required to measure the condition of the retransmission path. |
Å°¿öµå(Keyword) |
SCTP
¸ÖƼȣ¹Ö
Multi-Homing
ÀçÀü¼Û Á¤Ã¥
Retransmission Policy
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ÆÄÀÏ÷ºÎ |
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