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Segment Routingの利用例と未来
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Takeru Hayasaka
October 08, 2018
Programming
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2.4k
Segment Routingの利用例と未来
#wakate2018で話したSegment Routingについての紹介スライド
公開版なので自己紹介とちょっとした補足が増えてます(がほとんど本編に変わりはありません)
Takeru Hayasaka
October 08, 2018
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Transcript
4FHNFOU3PVUJOHͷ ར༻ྫͱະདྷ ૣࡔඩྲྀ !UBLFNJP*0 XBLBUF 1
8IPBNJ w ͔͚ͨ͞Δ !UBLFNJP*0 w ωοτϫʔΫҙຯ JOGPTFD ʹڵຯ͕͋Δ w
͕ੜͰඒຯ͍͓͠ञͷ ҿΈํΛֶͼʹདྷ·ͨ͠ w ࣮ωοτϫʔΫࠓ͔Β ͬͯΔॳ৺ऀͳͷͰͪΐͬͱ ͨ͠αʔϕΠΛ͠ʹདྷͨ !2
త 4FHNFOU3PVUJOHΛ ͳΜͱͳ͘ ཧղͨ͠φͰϠϯάͳएखʹͳΔ !3
ௐࠪ 4
ௐࠪ! #(1041' *(1Λ ͍ͬͯΔ͍ͬͯΔ
ௐࠪ! ΞϯμʔϨΠΦʔόʔϨΠͱ ݴΘΕͯงғؾ͕Θ͔Δ
ௐࠪ! 4FHNFOU3PVUJOHΛ͍ͬͯΔ
ௐࠪ 4FHNFOU3PVUJOH Λʮͬͯʯ͍Δ
4FHNFOU3PVUJOHΛ Α͘͝ଘͷօ͞Μ ΄ͲͷٳܜʹͳΓ·͢ !9
͓ॻ͖ wഎܠࣄͱ4FHNFOU3PVUJOHͱ wجૅࣝ wϢʔεέʔε wඪ४Խಈ wະདྷͱͦͷઌ !10
എܠࣄͱ4FHNFOU3PVUJOHͱ !11
എܠ w ωοτϫʔΫࣄۀऀͷ๊͑ͯΔ w ωοτϫʔΫͱτϥϑΟοΫύλʔϯʑෳࡶͰ ଟ༷ʹͳ͍ͬͯΔɻ w ऩӹΛߴΊΔʹ٬ʹྑ͍αʔϏεΛఏڙ͢Δඞཁ͕ ͋Γɺਫ਼ͷߴ͍τϥϑΟοΫ੍ޚͷχʔζߴ·ͬ ͍ͯΔɻ
!12
ڞ௨ͷ͍ !13
ڞ௨ͷ͍ w2ཧίετΛ૿େͤͣ͞ʹଟ༷ͳαʔϏε Λఏڙ͢ΔʹɺͲ͏͢Ε͍͍ͷ͔ɻ
ڞ௨ͷ͍ w"ܦ࿏Λ໌ࣔతʹࢦఆ੍͠ޚ͢Δ wҰൠʹτϥϑΟοΫΤϯδχΞϦϯάͱΑ ΕΔ w ʢ͔ͳΓڱٛͳදݱײ͋ΔͷͰ͋͘·ͰҰྫͰ͢ʣ
τϥϑΟοΫ ΤϯδχΞϦϯά w௨ৗͷ*1ܦ࿏ใʹैͬͨܦ࿏બͰɺجຊత ʹ࠷ܦ࿏͕બ͞ΕΔɻ w݁Ռɺಛఆܦ࿏ʹτϥϑΟοΫ͕ूத͘͢͠ͳΓɺ αʔϏεͷ༰ʹԠͨ͡ॊೈͳܦ࿏બ͠ ͍ɾɾɾ wଞʹطଘͷϓϩτίϧʹ͕ɾɾɾ
34715&ͷྫ w34715& wطଘͷ3471ʹϥϕϧͱ5&ʢ5SB⒏D &OHJOJFFSJOHʣͷػೳΛରԠ֦ͤͨ͞ுϓϩτί ϧ
34715&ͷྫ wύέοτͷ௨աܦ࿏ͱͳΔτϯωϧΛ࡞͢ΔͨΊɺ ࣄલγάφϦϯά͕ൃੜ͢Δ w֤ϊʔυ͕ܦ࿏ʹؔ͢ΔεςʔτΛอ࣋͢Δ w݁Ռཧ͕ෳࡶʹͳΓɺεέʔϥϏϦςΟͷ੍ ൃੜ࣌ͷରԠͷ͠͞ʹ݁͢Δ
34715&ͷྫ wŨŽŘ w৽װઢμΠΞௐͱ͍͏ਓྗγάφϦϯάΛͨ͠ ͔Βਏ͔ͬͨ wʢิɿXBLBUFͷॳʹ౦৽װઢ͕Ұ ࣌ؒࢭ·ͬͨͷͰࢀՃऀΈΜͳʹӨڹͨ͠ʣ
ղܾࡦ !20
!21
4FHNFOU3PVUJOHͱ w ωοτϫʔΫΛ4FHNFOUͱ͍͏ཁૉΛ༻͍ͯදݱ͠ɺ ͦͷ4FHNFOUΛࢦఆ͢Δ͜ͱʹΑΓύέοτͷసૹΛ ࣮ݱ͢ΔΞʔΩςΫνϟ w *&5'ͷ413*/( 4PVSDF1BDLFU3PVUJOHJO /FUXPSLJOH Ͱࡦఆ͞ΕͯΔ
w ࣮ੜͯ͠पͩͬͨΓ͢Δ !22
ಛ w εςʔτϨε w ػثෛՙɾӡ༻ෛՙܰݮ w *(1 041'*4*4 ͚ͩͰ࣮ݱ w
ίϯτϩʔϧϓϨʔϯͷγϯϓϧԽ w σʔλϓϨʔϯඇґଘ w .1-4·ͨ*1W !23
جૅࣝ !24
4FHNFOUͷछྨ w /PEF4FHNFOU w ಛఆͷϊʔυΛද͢͜ͱ͕Ͱ͖Δ w QSFpY4*%ͱ͔ݴͬͨΓ͢Δ w "EKBDFODZ4FHNFOU w
ϊʔυຖͷྡؔΛࣔ͢ w ୠ͠ยํͣͭͷ w 4FHNFOU*%ʢ4*%ʣ w ͜ΕΒͷ4FHNFOUʹৼΒΕΔݻ ༗ͷ*% /PEF4FHNFOU /PEF4FHNFOU "EKBODFODZ 4FHNFOU SPVUFS SPVUFS 0 "EKBODFODZ 4FHNFOU !25
4FHNFOUΛ ݩʹͨ͠େࡶͳύέοτసૹྫ 0 1 1 2 4FHNFOUʮ̎ʯ ύέοτσʔλ ύέοτͷྲྀΕ /PEF4FHNFOUʮ̎ʯ
Λͬͯ·͢ !26
/PEF4FHNFOU /PEF4*% ͷసૹಈ࡞ 1 4 1 3 0 2 4*%ʮʯ
ύέοτσʔλ /PEF4*%ʮʯ !27
/PEF4FHNFOU /PEF4*% ͷసૹಈ࡞ 1 4 1 3 0 2 4*%ʮʯ
ύέοτσʔλ /PEF4*%ʮʯ *(1ͷTIPSUFTU QBUIʹ͕ͨͬͯ͠ύέοτ సૹΛߦ͏ !28
/PEF4FHNFOU /PEF4*% ͷసૹಈ࡞ 1 4 1 3 0 2 ύέοτσʔλ
/PEF4*%ʮʯ 4*%ʮʯ 4*%ʮʯ 4FHNFOU-JTU 4PVSDF3PVUJOHͷܦ࿏ʹ ԊͬͯฒΒΕͨ4*%ͷϦετ ʢڍಈ·Μ·ɹελοΫ !29
/PEF4FHNFOU /PEF4*% ͷసૹಈ࡞ 1 4 1 3 0 2 ύέοτσʔλ
/PEF4*%ʮʯ 4*%ʮʯ 4FHNFOU-JTU !30
/PEF4FHNFOU /PEF4*% ͷసૹಈ࡞ 1 4 1 3 0 2 ύέοτσʔλ
/PEF4*%ʮʯ /POF 4FHNFOU-JTU !31
/PEF4FHNFOUͷڍಈಛ w ͳͥҠಈ͕εΩοϓͰ͖͔ͨ w /PEF4FHNFOU(MPCBMͳ4FHNFOUͰ͋Δ w ͭ·Γ/PEF4*%ҙͷ43EPNBJOʢͭ·Γ43 ͷྖҬʣͰϢχʔΫͳ w/PEF4*%͕ଘࡏ͢ΔύέοτͲͷϧʔλ͕ड͚औͬ ͯѼઌಉҰϊʔυʢϧʔλʣʹసૹ͞ΕΔ
!32
"EKBDFODZ4FHNFOU "EK4*% ͷసૹಈ࡞ 1 4 1 3 0 2 4*%ʮʯ
ύέοτσʔλ "EK4*% \ ^ !33
"EKBDFODZ4FHNFOU "EK4*% ͷసૹಈ࡞ 1 4 1 3 0 2
"EK4*% \ ^ 4*%ʮʯ 4FHNFOU-JTU ύέοτσʔλ !34
"EKBDFODZ4FHNFOU "EK4*% ͷసૹಈ࡞ 1 4 1 3 0 2
"EK4*% \ ^ /POF 4FHNFOU-JTU ύέοτσʔλ !35
"EKBDFODZ4FHNFOU ͷڍಈಛ w "EKBDFODZ4FHNFOU-PDBM4FHNFOUͳͷͰҟͳ ΔϊʔυͰ͋Εಉ͡"EK4*%Λ༻͢Δ͜ͱ͕Մೳ wٯʹ͍͑ಉ͡"EK4*%͕༩͞ΕͨύέοτͰ͋ͬͯ ड͚औͬͨ࣌ͷѼઌϧʔλຖʹҟͳΔڍಈΛ͢Δ !36
/PEFͱ"EKBDFODZΛΈ߹ Θͤͨసૹಈ࡞ 1 4 1 3 0 2 "EK4*% 4*%ʮʯ
4FHNFOU-JTU ύέοτσʔλ 4*%ʮʯ 4*%ʮʯ !37
/PEFͱ"EKBDFODZΛΈ߹ Θͤͨసૹಈ࡞ 1 4 1 3 0 2 "EK4*% 4*%ʮʯ
4FHNFOU-JTU ύέοτσʔλ 4*%ʮʯ /PEF4*%సૹ !38
/PEFͱ"EKBDFODZΛΈ߹ Θͤͨసૹಈ࡞ 1 4 1 3 0 2 "EK4*% 4*%ʮʯ
4FHNFOU-JTU /PEF4*%సૹ !39
/PEFͱ"EKBDFODZΛΈ߹ Θͤͨసૹಈ࡞ 1 4 1 3 0 2 "EK4*% /POF
4FHNFOU-JTU "EK4*%Λ௨ΔΑ͏ ʹసૹ !40
σʔλϓϨʔϯ w ༻Ͱ͖ΔσʔλϓϨʔϯ.1-4ͱ*1Wͷͭɽ 4FHNFOU-JTUΛ͜ͷೋͭͰදݱ͢Δ͜ͱ͕Ͱ͖Δ w .1-4ϥϕϧελοΫͰදݱ͞ΕΔ w *1W*1W֦ுϔομͰදݱ͞ΕΔ w ࡉ͔͍ڍಈ͕࣌ؒͳͦ͞͏ͳͷͰੋඇޙͰฉ͍͍ͯ
͚ͨͩΕʂ !41
جૅࣝͷ·ͱΊ w /PEF4FHNFOU w ಛఆͷϊʔυΛද͢͜ͱ͕Ͱ͖Δ w "EKBDFODZ4FHNFOU w ϊʔυຖͷྡؔΛࣔ͢ʢୠ͠ยํͣͭͷʣ w
4FHNFOU*%ʢ4*%ʣ w ͜ΕΒͷ4FHNFOUʹৼΒΕΔݻ༗ͷ*% w ͜ΕΒશͯΛΈ߹Θͤͯར༻͕Ͱ͖Δ !42
Ϣʔεέʔε !43
Ϣʔεέʔε w ಛతʹܦ࿏Λࢦఆͨ͠Γ͢ΔͷʹΘΕΔ w αʔϏενΣΠχϯά w ߏ w /7' w
ΞϓϦέʔγϣϯ͝ͱʹ੍ޚ͞ΕͨϧʔςΟϯά w ྫ͑TJNͷFOBCMFʹ͢Δ͔ͳͲͷ"1*ͱ͔ w ͳͲɾɾɾ !44
αʔϏενΣΠχϯά 1 4 1 3 0 2 w 43Λͬͯ'8%1*ͳͲͷαʔϏεϊʔυΛ௨ΔΑ͏ ʹઃఆ͢Δ͜ͱ͕Մೳ
firewallɿ10 !45
%$ͷߏ IUUQTXXXTMJEFTIBSFOFUMJOFDPSQTT !46
ඪ४Խಈ !47
ඪ४Խಈ w *&5'ͷ413*/( 4PVSDF 1BDLFU3PVUJOHJO /FUXPSLJOH Ͱࡦఆ͞ΕͯΔ w ΞΫςΟϒͳυϥϑτ͕ ͋Γ׆ൃ
w ͜ͷத͔ΒҰͭϐοΫΞοϓ͠ ͯݟ·͢ɽ !48
ඪ४Խಈ w ͪͳΈʹͲΕ͘Β͍׆ൃͳͷ͔ͷ΄͔ͱαΠζΛൺֱ IUUQͰ߹ܭIJU 5-4ͰIJU !49
ඪ४Խಈ 43WͰຊਓ͕ٞʹࢀՃͯ͠ ΠχγΞνϒΛ࣋ͬͯΔʂ w ͳͷͰ43Wʹ͍ͭͯͷඪ४Խಈʹ͍ͭͯ΄ Μͷͪΐͬͱ͚ͩগ͠ϐοΫΞοϓ͠·͢ !50
ඪ४Խಈ w ࡢͷESBGUpMTpMTTQSJOHTSWOFUXPSLQSPHSBNNJOH w ʮ֦ுϔολʔʹసૹઌͷࢦఆʢ-PDBUPSʣ͚ͩͰͳ͘ύέοτΛड͚ औͬͨ࣌ͷ"DUJPOʢ'VODUJPOʣ߹Θͤͯࢦఆ͢Δ͜ͱ͕ఆ͍ͯ͠Δʯ w ֦ுϔολʔʹॻ͖ࠐΊΔ4*%͕Ϗοτ͋Δ -PDBUPSʢసૹઌʣ "SHVNFOU
"DUJPOʹର͢Δύϥϝʔλ 'VODUJPO "DUJPO CJU ͪͳΈશͯՄมͷ߲ !51
ඪ४Խಈ w ࠓͷESBGUpMTpMTTQSJOH TSWOFUXPSL QSPHSBNNJOHͰ w ͍ͭʹެࣜͰ࣮ݧ࣮͕ੜ͑ͨ w IUUQTHJUIVCDPN FCJLFOQTSW
w Θ͔ͣҰΒͣͰ͍͢͝ ◦T.Insert ◦T.Encaps, T.Encaps.Red ◦End, End.DT6 ◦End.MAP (future) ◦End.M.GTP6.D ◦End.M.GTP6.E ◦End.M.GTP4.E (future) ◦T.M.Tmap (future) ◦End.Limit (not planned) !52
ඪ४Խಈ w ݸਓతʹ໘ന͔ͬͨͷϕϯμʔ֤͕ࣾͲ͏͍͏ํʹ͖ ͍ͨͷ͕ผ్ͷࢿྉΛ୳͢ͱຯʹಁ͚ͯΘ͔Δͱ͍͏͜ͱɽ IUUQTXXXOJDBEKQKBNBUFSJBMTJFUGSFQPSUNBUTVTIJNBQEG !53
ඪ४Խಈ IUUQTXXXOJDBEKQKBNBUFSJBMTJFUGSFQPSUNBUTVTIJNBQEG !54
ඪ४Խಈ·ͱΊ w 43W࣮ʹඪ४Խ͕ग़͔ͨΓͷ৽͍ͭ͠ w Ͳ͜ͷϕϯμʔڵຯʑͱ͍͏͜ͱ͕Θ͔Γɼ͜ΕΒ͔ ͳΓਐาͯ͠Δʂ w ฒʑͳΒ͵ྗΛײ͡ΔͷͰͥͻ৭ʑݟͯཉ͍͠ !55
ະདྷͱͦͷઌ !56
ࠓͷ43๊͕͑Δ w 4*%ͷཧϓϥΫςΟεϓϩϏδϣχϯά͕ඞཁ w ηάϝϯτϧʔςΟϯάͷ֊Խ w ͲΜͳ5&ϙϦγʔʹ͢Ε͍͍ͷ͔ w ϥϕϧελοΫͷ૿ՃͰͷݶք w
ύοͱࢥ͍͍ͭͨͷͰ͜Μͳײ͡Ͱ·ͩ·ͩࣽ٧Ί Δඞཁ͕͋Γͦ͏ !57
4*%ͷཧϓϥΫςΟε ϓϩϏδϣχϯά͕ඞཁ w /PEF4*%4FHNFOUEPNBJOͰ(MPCBMͳͰ͋Δඞཁ͕͋Δ w ͭ·ΓඃΒ͍͚ͤͯͳ͍ɽ w ඃͬͯ͠·ͬͨϊʔυͷͲͪΒΛ༗ޮʹ͠Α͏͔ͱ͍͏نఆͪ ΖΜଘࡏ͢Δ w
DGESBGUJFUGTQSJOHDPOqJDUSFTPMVUJPO w ίϯϑΟάͰԿઃఆ͢ΔJOEFYͷͳΜͯͨͩͷͳͷͰͱͯ ਏ͍ɾɾɾ w ϓϩϏδϣχϯάπʔϧՄࢹԽͷϓϥΫςΟε͕ඞཁ !58
ηάϝϯτϧʔςΟϯά ͷ֊Խ w ֤ϊʔυ͕43EPNBJOͷશ4*%ใΛอ࣋͢Δඞཁ ੑ͕ଘࡏ͢Δͭ·ΓωοτϫʔΫن֦େʹ͏ใ ྔͷ૿ՃͰࢮ͵ w ղܾࡦɿ֊ԽΛߦ͏ w ֤ϊʔυʹ্ҐηάϝϯτͷใͷΈΛ࣋ͨͤɼ
ଞͷ্ҐηάϝϯτͷϊʔυΛӅṭ w ֤ϊʔυͷ࣋ͭใྔݮΛ࣮ݱ !59
ηάϝϯτϧʔςΟϯά ͷ֊Խ w ͜ͷղܾࡦʹ͕͋Δ w ϙϦγઃఆൣғͷ໌֬ԽԿͰ͢Εྑ͍ΜͩΖ͏ w ্Ґηάϝϯτͷ4*%༩ͷ༗ແʹΑΔྨʁ w 431$&ͷϙϦγઃఆख๏ʹΑΔྨʁ
w ͦͦநԽͨ͠֊Խͨͭ͠11ΑΖ͘͠ͳײ͡Ͱ࣍ ܘతͷ͕ͦͷ͏ͪى͖ΔͷͰɾɾɾʁ w ࠷େ࣍ͱܘͷ੍ͷͱͰͲΕ͚ͩΛଟؚ͘Μͩ άϥϑΛ࡞ΕΔ w DGܘ͕খ͍͞ԆΛখ͘͞Ͱ͖Δ !60
·ͱΊ w 43ΊͬͪΌศརɽؒҧ͍ͳ࣍͘ੈͷύϥμΠϜʹ ͳΔʢͱࢲࢥͬͯΔʣ w ͔͠͠ΦϖϨʔγϣϯͷ؍͔ΒͲ͏͢Εྑ͍Μͩ Ζ͏ͳͱ͍͏ͷ͕ΰϩΰϩ͋Γ·ͩ·ͩࣽ٧ΊΔ͖ ੈք؍ɽ w ͔ͳΓ༻ޠΛͰ͖Δ͚ͩল͍ͨͷͰॏശͷ۱Λͭͭ͘
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https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing-ldp-interop/?include_text=1 https://datatracker.ietf.org/doc/draft-filsfils-spring-srv6-network-programming/?include_text=1 !62
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