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ISP で用いられている技術とネットワーク
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Ryoma TAKEDA
June 24, 2017
Technology
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950
ISP で用いられている技術とネットワーク
wakamonog meeting 10 で発表した資料
Ryoma TAKEDA
June 24, 2017
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Transcript
*41Ͱ༻͍ΒΕ͍ͯΔ ٕज़ͱωοτϫʔΫ ాཾഅ
ࣗݾհ w ాཾഅ ͚ͨͩΓΐ͏· w ۀ༰ w *41ͷΤοδଆ ސ٬ଆʹ͍ۙωοτϫʔΫ
ͷӡ༻ɺαϙʔτ w ͦͷଞ͍ͬͯΔ͜ͱ w *OUFSOFU8FFLͷϓϩάϥϜاը w TVLJZBLJQSPKFDU w IUUQTXXXTVLJZBLJTLJ
*41ͱԿ͔ w *OUFSOFU4FSWJDF1SPWJEFS w ެऺ௨৴ճઢͳͲΛܦ༝ͯ͠ܖऀʹ ωοτϫʔΫͷଓੑΛఏڙ͢Δࣄۀऀ w ͭ·Γ w ࣗͨͪͰɺ༷ʑͳڌʹ͚ͯͷଓੑΛ࣋ͪ
w ར༻͍ͨ͠ͱ͍͏ਓʹରͯ͠ଓੑΛఏڙ͠ w ωοτϫʔΫʢΠϯλʔωοτʣΛར༻Ͱ͖ΔΑ͏ʹ͍ͯ͠Δ 3
ISP ͷωοτϫʔΫߏ 4 όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9
ϧʔλ όοΫϘʔϯ ϧʔλ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ QFFS USBOTJU CDN Internet eXchange QFFS ઐ༻ઢ ϒϩʔυόϯυ ϞόΠϧ ΞϓϦέʔγϣϯ ର֎ଓ όοΫϘʔϯ Τοδ
*41͕࣋ͭର֎ଓͱ w ଟ͘ͷ*41͕ɺΠϯλʔωοτ UIF*OUFSOFU ͷଓੑΛఏڙ͍ͯ͠Δ w ·ͣͲ͏ͬͯɺΠϯλʔωοτଓ͍ͯ͠Δ͔ʁ w ͯ͢ͷ*41ଓͰ͖ΔࣄۀऀʹͳΔ
w ͯ͢ͷ*41ଓͰ͖Δࣄۀऀ͔ΒଓੑΛങ͏ 5
Πϯλʔωοτͷߏͱ w ݱࡏͷΠϯλʔωοτɺ ༷ʑͳࣄۀऀ͕֊ߏ ʹͳͬͯܗ͞Ε͍ͯΔ w ্Ґͷ֊͔Βॱʹɺ5JFS 5JFSͱݺΕΔ w ֊ͷ্ԼɺϐΞɾτϥϯδοτͷ͔ؔΒ
ܾఆ͢Δ͜ͱ͕Ұൠత 5JFS 5JFS 5JFS AS1 AS2 AS4 AS3 AS5 AS6 AS7 AS8 AS9
ϐΞ w ޓ͍ͷܦ࿏ใΛަ͠ɺ ޓ͍ͷ"4ͷ౸ୡੑΛ֬อ͢ΔؔΛɺ ϐΞ QFFS ͱݺΜͰ͍Δ w ϐΞʹΑΔτϥϑΟοΫͷަɺ ແঈͰߦΘΕΔ͜ͱ͕ଟ͍
7 AS AS AS ϐΞ ϐΞ ϐΞ 5JFSO
τϥϯδοτ w ޓ͍ͷܦ࿏ใΛަ͠ɺޓ͍ͷ"4ҙ֎ͷ౸ୡੑ ֬อ͢ΔؔΛɺτϥϯδοτ USBOTJU ͱݺΜͰ͍Δ w τϥϯδοτͷఏڙɺ༗ঈʹͳΔ͜ͱ͕ଟ͘ɺ ͦͷֹτϥϑΟοΫྔʹԠͨ͡ैྔ՝ۚͱͳΔ͜ͱ͕ଟ͍
AS AS AS ϐΞ ϐΞ ϐΞ AS τϥϯδοτ 5JFSO 5JFSO
*41ͷڧΈͱ w *41ͷڧ͞ɺ ͍͔ʹత·Ͱૣ͘ɺ௨৴Λམͱ͢͜ͱͳ͘ಧ͚Δ͔ w ϐΞɾτϥϯδοτΛଟ͘ͷࣄۀऀͱߦ͏΄͏͕ɺ త·Ͱͷཧతͳڑ͘ͳΔ w ͕ࣗଓ͠Α͏ͱ͍ͯ͠Δ*41͕ɺ ʮͲ͜ͱϐΞɾτϥϯδοτΛ͍ͯ͠Δͷ͔ʯ
ΛΔ͜ͱͱͯॏཁ
ISP ͷωοτϫʔΫߏ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9
ϧʔλ όοΫϘʔϯ ϧʔλ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ QFFS USBOTJU CDN Internet eXchange QFFS ઐ༻ઢ ϒϩʔυόϯυ ϞόΠϧ ΞϓϦέʔγϣϯ όοΫϘʔϯ Τοδ ର֎ଓ
*41ͷόοΫϘʔϯߏ w *41ͷόοΫϘʔϯɺ ༻్ʹԠͯ͡ଟஈߏΛऔΔ͜ͱ͕ଟ͍ w αʔϏεऩ༰ϧʔλ ༷ʑͳαʔϏεΛऩ༰͠ɺόοΫϘʔϯͱӡͿઃඋ w όοΫϘʔϯϧʔλ
αʔϏεͰൃੜͨ͠τϥϑΟοΫΛӡͿઃඋ w *9ϧʔλ ଞࣄۀऀͱͷ૬ޓଓΛߦ͏ઃඋ w ͦΕͧΕٻΊΒΕΔੑೳɺ ϝϯςφϯε࣌ͷӨڹ͕ҟͳͬͯ͘Δ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ όοΫϘʔϯ ϧʔλ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ QFFS USBOTJU CDN Internet eXchange QFFS ઐ༻ઢ ϒϩʔυόϯυ ϞόΠϧ ΞϓϦέʔγϣϯ
*41ͷόοΫϘʔϯߏ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ
όοΫϘʔϯ ϧʔλ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ QFFS USBOTJU CDN Internet eXchange QFFS ઐ༻ઢ ϒϩʔυόϯυ ϞόΠϧ ΞϓϦέʔγϣϯ Τοδ όοΫϘʔϯ ର֎ଓ
͓٬͞Μʹఏڙ͢ΔωοτϫʔΫ w αʔϏεऩ༰ϧʔλΑΓԼʹɺ ֤αʔϏεʹԠ༷ͨ͡ʑͳߏͷωοτϫʔΫ͕͋Δ w ࠷Ұൠతͳʢݹ͔͘Β͋ΔʣαʔϏε͕ɺ ઐ༻ઢͱݺΕΔαʔϏε w ͓٬͞Μͷͱ͜ΖʹճઢΛҾ͍ͯɺ
ΠϯλʔωοτଓͰ͖ΔΑ͏ʹ͢ΔαʔϏε
ར༻ܗଶ w ճઢͷఏڙʹ༷ʑͳܗ͕ࣜ͋Γɺ͓٬͞Μ͕ͲΕ΄Ͳ ճઢΛॏཁࢹ͍ͯ͠Δ͔Ͱܾ·ͬͯ͘Δ w ো͕ى͖ͯ௨৴அ͕ى͖ͯ΄͘͠ͳ͍ w ௨৴ྔ͕ଟ͍ͷͰɺ9(CQTͷଳҬΛ༻ҙͯ͠΄͍͠
ར༻ܗଶͷҰྫ w *41͕ɺ͓٬͞Μʹఏڙ͠ ͍ͯΔܗଶͷҰྫ w ֤ϨΠϠʹ͓͍ͯɺ ੑΛ֬อ͍ͯ͠Δ w -#(1
7331 041' w -451 -"( w -ޫεΠον w ߹ʹΑͬͯɺ *41͕͓٬͞Μͷωοτϫʔ ΫΛཧ͢Δ͜ͱ͋Δ 4*ͳͲ ޫεΠον Τοδϧʔλ αʔϏεऩ༰ ϧʔλ ͓٬͞Μͷ ωοτϫʔΫ #(1 7331 451 -"(
ճઢʹਵͯ͠ఏڙ͢Δͷ w %/4ʹΑΔ໊લղܾػೳͷఏڙ w ͓٬͞Μ͕ճઢΛ༻͢Δࡍʹࢀর͢Δ Ωϟογϡαʔό w *1ΞυϨεΛׂΓͯͨࡍɺ ٯҾ͖ͷ໊લղܾ͕ग़དྷΔΑ͏ʹ͢ΔͨΊͷ ݖҖ%/4αʔό
w ଞʹɺ/51αʔόͳͲɺ ސ٬͕Α͘ར༻͢ΔͷΛ͚ͯఏڙ͍ͯ͠Δ*41͋Δ 16
ճઢΛकΔ %P4ରࡦ w % %P4 <%JTUSJCVUFE>%FOZPG4FSWJDF ඪͷαʔϏεʹରͯ͠େྔͷαʔϏεཁٻΛૹΓɺ ਖ਼ৗͳαʔϏεఏڙΛෆೳʹ͢Δ͜ͱ w
*41ɺ௨৴ΛӡͿͷ͕ࣄͳͷͰɺ ௨৴ΛࢭΊΔ͜ͱຊདྷͷࣄͰͳ͍ w *41ɺجຊతʹ͓٬͞Μͷ௨৴ΛݟΔ͜ͱ͕Ͱ͖ͳ͍ ʢ௨৴ͷൿີʣ 17
ճઢΛकΔ %P4ରࡦ w ͓٬͞Μʹఏڙ͍ͯ͠ΔଳҬ Ҏ্ͷ߈ܸ͕དྷͨ߹ w ͓٬͞Μ௨৴Λར༻͢Δ͜ ͱ͕Ͱ͖ͳ͍ w ͓٬͞ΜଆͰϑΟϧλ
ͯ͠ɺ্ྲྀͷଳҬ͕ ڱ͍ͷͰͲ͏͠Α͏ͳ͍ 18 Τοδϧʔλ αʔϏεऩ༰ ϧʔλ ͓٬͞Μͷ ωοτϫʔΫ ߈ܸύέοτ (CQT ଳҬ (CQT ਖ਼ৗͳ௨৴ (CQT ਖ਼ৗͳ௨৴͕ಧ͔ͳ͍
ճઢΛकΔ %P4ରࡦ w ͓٬͞Μ͔Βͷཁ͕͋Δ߹PS*41 ͷ͍࣋ͬͯΔઃඋʹӨڹ͕͋Δ߹ɺ ͓٬͞Μͷ௨৴ΛݟͯϑΟϧλΛೖΕΔ w "$- ΞΫηεϦετ ͳͲͰϑΟϧλ
w 35#)#(1ͷܦ࿏ࠂͰɺOFYUIPQΛม͑Δ OVMM ͜ ͱʹΑΓɺ͓٬͞ΜѼʹ௨৴͕ྲྀΕͳ͍Α͏ʹ͢Δ 19
·ͱΊ w *41ͷωοτϫʔΫɺஈߏ *9 ίΞ αʔϏεऩ༰ϧʔλ ʹΑͬͯߏ͞Ε͍ͯΔ w ΑΓଟ͘ͷސ٬ճઢʢτϥϯδοτʣ Λఏڙ͢Δ͜ͱʹΑΓɺ*41ͷωοτϫʔΫΛ͍͛ͯΔ
w ແঈͰτϥϑΟοΫΛަ͠߹͏͜ͱͰϐΞΛு͍ͬͯΔ w *41Πϯλʔωοτͷଓੑͷଞʹఏڙ͍ͯ͠Δͷ w %/4 /51αʔόͳͲ w %%P4ରࡦ 20 όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ όοΫϘʔϯ ϧʔλ όοΫϘʔϯ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ αʔϏεऩ༰ ϧʔλ *9 ϧʔλ *9 ϧʔλ QFFS USBOTJU CDN Internet eXchange QFFS ઐ༻ઢ ϒϩʔυόϯυ ϞόΠϧ ΞϓϦέʔγϣϯ