- Total Contents -
1. TFTF¶õ?
2. TFTFÀÇ ¿ª»ç
3. TFTPÀÇ ¹®Á¦Á¡
4. TFTPÀÇ ÀåÁ¡
5. TFTPÀÇ ±âº»ÀÌ·Ð
(1) Introduction to TFTP
(2) TFTP Packet
(3) Overview of a Transfer
(4) Errors and Delays
(5) Syntax, Semantics, and Timing
6. TFTP °³¼±¹æ¾È ±âÃÊÀÌ·Ð
7. Advanced TFTPÀÇ ±¸Çö
8. Reference
- Figure and Table Contents -
- Figure Contents -
Figure 1.
TFTP Packet Formats ¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤
3
Figure 2.
A TFTP Packet in Context ¡¤¡¤¡¤¡¤¡¤¡¤¡¤
5
Figure 3.
Example TFTP Operation ¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤
6
Figure 4.
RRQ Operation ¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤
9
Figure 5.
WRQ Operation ¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤
9
Figure 6.
Download½Ã Error Occurrence ¡¤¡¤¡¤¡¤¡¤¡¤
10
Figure 7.
Upload½Ã Error Occurrence ¡¤¡¤¡¤¡¤¡¤¡¤¡¤
10
Figure 8.
Data Packet Loss ¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤
11
Figure 9.
ACK Packet Loss ¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤¡¤
11
Figure 10.
Advanced TFTP Packet Formats ¡¤¡¤¡¤¡¤
15
Figure 11.
Set Connection Operation ¡¤¡¤¡¤¡¤¡¤¡¤¡¤
20
Figure 12.
Set Connectio¡¦(»ý·«)
|
EFTP´Â PARC À¯´Ï¹ö¼³ ÆÐŶ ÇÁ·ÎÅäÄÝ ¸ðÀ½ÀÇ ÀϺο´´Ù. TCP/IP ÇÁ·ÎÅäÄÝ ¸ðÀ½À» ÇÑâ °³¹ßÇÏ°í ÀÖÀ» ¶§, »õ·Î¿î È£½ºÆ® ŸÀÔ¿¡¼ °¡Àå ¸ÕÀú ±¸ÇöµÇ°ï ÇÏ´Â ÇÁ·ÎÅäÄÝÀ̾ú´Ù. TFTP°¡ ¸Å¿ì ´Ü¼øÇ߱⠶§¹®¿¡ ±¸ÇöÇϱⰡ ½¬¿ü±â ¶§¹®À̾ú´Ù.
RFC 1350ÀÌ ³ª¿À±â ÀÌÀü±îÁöÀÇ ÃÊâ±â TFTP¹öÀü¿¡´Â ¸Å¿ì ½É°¢ÇÑ ÇÁ·ÎÅäÄÝ °áÇÔÀÌ Á¸ÀçÇÑ´Ù. ÀÌ °áÇÔÀÇ À̸§Àº ¸¶¹ý»çÀÇ °ß½À»ý ½Åµå·ÒÀ̶ó ºÙ¾ú´Âµ¥, ÀÌ°ÍÀº ÆÇŸÁö¾Æ¶ó´Â ¿µÈÀÇ ¸¶¹ý»çÀÇ °ß½À»ý ¼¼±×¸ÕÆ®ÀÇ À̸§À» µû À̸§ÀÌ ºÙÀº °ÍÀ̾ú´Ù.
TFTP´Â 4.3 BSD¿¡¼ óÀ½À¸·Î 4.3 BSD¿¡ Æ÷ÇÔµÇ¾î µîÀåÇÏ¿´´Ù. ¸Æ ¿À¿¡½º X 10.5 ¹öÀü ÀÌÈÄ·Î ¸Æ ¿À¿¡½º X¿¡ µé¾î°¡ ÀÖ´Ù.
ÃÖ±Ù, TFTP´Â ¿ú (ÄÄÇ»ÅÍ)¿¡ ÀÇÇØ ¾Ç¿ëµÇ°í´Â ÇÑ´Ù. ºí¶ó½ºÅÍ (ÄÄÇ»ÅÍ ¿ú) °°Àº ¿úµéÀÌ TFTP¸¦ ¾Ç¿ëÇÑ´Ù. ¿úÀ» Æ۶߷Á »õ·Î¿î È£½ºÆ®¸¦ °¨¿°½ÃÅ°´Â µ¥ TFTP¸¦ ÀÌ¿ëÇÑ´Ù.
3. TFTPÀÇ ¹®Á¦Á¡
- stop-and-wait ¹æ½ÄÀÇ Æ¯¼º»ó Àü¼Û¼Óµµ°¡ ´À¸®´Ù.
- µð·ºÅ丮 ³»ÀÇ ÆÄÀÏ ¸®½ºÆ®¸¦ È®ÀÎÇÒ ¼ö ¾ø´Ù.
- ±ÇÇÑ ºÎ¿©¿Í Á¤º¸ º¸È£ ±â´ÉÀÌ ¾ø´Ù.
- DataÀÇ ½Å·Ú¼ºÀÌ ¶³¾îÁø´Ù.
- Warm¿¡ ÀÇÇØ ¾Ç¿ëµÉ ¼ö ÀÖ´Ù.
4. TFTPÀÇ ÀåÁ¡
- ½Ã½ºÅÛÀÌ ´Ü¼øÇÏ°í °£´ÜÇϱ⠶§¹®¿¡ ÀÓº£µðµå ½Ã½ºÅÛ¿¡¼ ÁÖ·Î »ç¿ëµÈ´Ù.
- ÀÛÀº Å©±âÀÇ ÆÄÀÏÀ» ÁÖ°í ¹ÞÀ» ¶§ À¯¿ëÇÏ´Ù.
5. TFTPÀÇ ±âº»ÀÌ·Ð
Introduction to TFTP
TFTP´Â ÀÎÅÍ³Ý Ç¥ÁØ FTP(RFC 959)º¸´Ù ´Ü¼øÇÏ°Ô ±¸ÇöµÇ¾îÀÖ´Ù. TFTP´Â Access controlÀ̳ª IdentificationÀ» Á¦°øÇÏÁö ¾Ê±â ¶§¹®¿¡ Public access file directory¿¡ ÀûÇÕÇÏ´Ù. TFTP´Â ´Ü¼øÇϱ⠶§¹®¿¡ ½±°í °£°áÇÏ°Ô ±¸ÇöÇÒ ¼ö ÀÖ´Ù. ¿¹¸¦ µé¾î TFTP¸¦ ÀÌ¿ëÇÏ¿© µð½ºÅ©°¡ ¾ø´Â ÀåÄ¡µéÀ» ºÎÆà ½Ã Firmware¸¦ ´Ù¿î·ÎµåÇÒ ¼ö ÀÖ´Ù.
TFTP Packet
TFTP °³Ã¼µéÀº ¸í·É, ÀÀ´ä, ÆÄÀÏ µ¥ÀÌÅ͸¦ ÆÐŶ Çü