åœç€Ÿã¯ã100 ç§ããã XNUMX ãã¿ãã€ããè¶ ããããŒã¯äºå垯åå¹ ãåãã XNUMX äžãµãŒããŒãè¶ ããã³ã³ãã¥ãŒãã£ã³ã° ã¯ã©ã¹ã¿ãŒã®å±éãå¯èœã«ããããŒã¿ ã»ã³ã¿ãŒ ãããã¯ãŒã¯èšèšãéçºããŸããã
Dmitry Afanasyev ã®ã¬ããŒããããæ°ããèšèšã®åºæ¬ååãããããžã®ã¹ã±ãŒãªã³ã°ãããã«ãã£ãŠçããåé¡ããããã解決ããããã®ãªãã·ã§ã³ããé«å¯åºŠæ¥ç¶ãã«ãããææ°ã®ãããã¯ãŒã¯ ããã€ã¹ã®ãã©ã¯ãŒãã£ã³ã° ãã¬ãŒã³æ©èœã®ã«ãŒãã£ã³ã°ãšã¹ã±ãŒãªã³ã°ã®æ©èœã«ã€ããŠåŠã³ãŸããå€æ°ã® ECMP ã«ãŒããå«ãããããžãããã«ããã£ãæ°ã¯ãå€éšæ¥ç¶ã®æ§æãç©çå±€ãé ç·ã·ã¹ãã ãããã³å®¹éãããã«å¢ããæ¹æ³ã«ã€ããŠç°¡åã«èª¬æããŸããã
- ã¿ãªãããããã«ã¡ã¯ïŒç§ã®ååã¯ããããªãŒ ã¢ãã¡ãã·ãšãã§ããYandex ã®ãããã¯ãŒã¯ ã¢ãŒããã¯ãã§ãäž»ã«ããŒã¿ ã»ã³ã¿ãŒ ãããã¯ãŒã¯ãèšèšããŠããŸãã
ç§ã®è©±ã¯ãYandex ããŒã¿ã»ã³ã¿ãŒã®æŽæ°ããããããã¯ãŒã¯ã«ã€ããŠã§ããããã¯ç§ãã¡ã®ãã¶ã€ã³ã倧ããé²åããããã®ã§ãããåæã«ããã€ãã®æ°ããèŠçŽ ããããŸããçãæéã«å€ãã®æ
å ±ãè©°ã蟌ãå¿
èŠããããããããã¯æŠèŠã®ãã¬ãŒã³ããŒã·ã§ã³ã§ãããŸããè«çããããžãéžæããŸãã次ã«ãã³ã³ãããŒã« ãã¬ãŒã³ã®æŠèŠãšããŒã¿ ãã¬ãŒã³ã®ã¹ã±ãŒã©ããªãã£ã®åé¡ãç©çã¬ãã«ã§äœãèµ·ããããéžæããããã€ã¹ã®ããã€ãã®æ©èœãèŠãŠãããŸããå°ãåã«ã話ããããMPLS ã䜿çšããããŒã¿ã»ã³ã¿ãŒã§äœãèµ·ãã£ãŠãããã«ã€ããŠå°ã觊ããŠã¿ãŸãããã
ã§ã¯ãè² è·ãšãµãŒãã¹ã®èŠ³ç¹ããèŠããšãYandex ãšã¯äœã§ãããã? Yandex ã¯å
žåçãªãã€ããŒã¹ã±ãŒã©ãŒã§ãããŠãŒã¶ãŒã«ç®ãåãããšãç§ãã¡ã¯äž»ã«ãŠãŒã¶ãŒã®ãªã¯ãšã¹ããåŠçããŸãããŸããåçš®ã¹ããªãŒãã³ã°ãµãŒãã¹ãããŒã¿è»¢éãã¹ãã¬ãŒãžãµãŒãã¹ãããããŸãã®ã§ãå©çšäžãããããã¯ãšã³ãã«è¿ãå Žåã¯ãåæ£ãªããžã§ã¯ã ã¹ãã¬ãŒãžãããŒã¿ ã¬ããªã±ãŒã·ã§ã³ããããŠãã¡ããæ°žç¶ãã¥ãŒãªã©ã®ã€ã³ãã©ã¹ãã©ã¯ãã£ã®è² è·ãšãµãŒãã¹ãããã«è¡šç€ºãããŸããã¯ãŒã¯ããŒãã®äž»ãªã¿ã€ãã® 1 ã€ã¯ãMapReduce ããã³åæ§ã®ã·ã¹ãã ãã¹ããªãŒã åŠçãæ©æ¢°åŠç¿ãªã©ã§ãã
ãããããã¹ãŠãè¡ãããã€ã³ãã©ã¹ãã©ã¯ãã£ã¯ã©ã®ããã«ãªã£ãŠããã®ã§ãããã?ç¹°ãè¿ãã«ãªããŸãããåœç€Ÿã¯éåžžã«å
žåçãªãã€ããŒã¹ã±ãŒã©ãŒã§ãããããããã¹ãã¯ãã«ã®ãã匱ããã€ããŒã¹ã±ãŒã©ãŒåŽã«å°ãè¿ã¥ããŠããŸããããããç§ãã¡ã¯ãã¹ãŠã®å±æ§ãæã£ãŠããŸããå¯èœãªéããæ±çšããŒããŠã§ã¢ãšæ°Žå¹³ã¹ã±ãŒãªã³ã°ã䜿çšããŸããåœç€Ÿã§ã¯å®å
šãªãªãœãŒã¹ ããŒãªã³ã°ãè¡ã£ãŠããŸããåã
ã®ãã·ã³ãã©ãã¯ãæäœããã®ã§ã¯ãªããèšç»ãšå²ãåœãŠãåŠçããããã€ãã®è¿œå ãµãŒãã¹ã䜿çšããŠããããã亀æå¯èœãªãªãœãŒã¹ã®å€§èŠæš¡ãªããŒã«ã«çµåãããã®ããŒã«å
šäœãæäœããŸãã
ãããã£ãŠã次ã®ã¬ãã«ã¯ãã³ã³ãã¥ãŒãã£ã³ã° ã¯ã©ã¹ã¿ãŒ ã¬ãã«ã®ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã ã§ãã䜿çšãããã¯ãããžãŒ ã¹ã¿ãã¯ãå®å šã«å¶åŸ¡ããããšãéåžžã«éèŠã§ããåœç€Ÿã¯ãšã³ããã€ã³ã (ãã¹ã)ããããã¯ãŒã¯ããœãããŠã§ã¢ ã¹ã¿ãã¯ãå¶åŸ¡ããŸãã
åœç€Ÿã¯ãã·ã¢åœå å€ã«ããã€ãã®å€§èŠæš¡ãªããŒã¿ã»ã³ã¿ãŒãæã£ãŠããŸãããããã¯ãMPLS ãã¯ãããžãŒã䜿çšããããã¯ããŒã³ã«ãã£ãŠçµåãããŸããåœç€Ÿã®å éšã€ã³ãã©ã¹ãã©ã¯ãã£ã¯ã»ãŒå®å šã« IPv6 ã§æ§ç¯ãããŠããŸãããåŒãç¶ã䞻㫠IPv4 çµç±ã§éä¿¡ãããå€éšãã©ãã£ãã¯ã«å¯Ÿå¿ããå¿ èŠããããããIPv4 çµç±ã§éä¿¡ããããªã¯ãšã¹ããäœããã®æ¹æ³ã§ããã³ããšã³ã ãµãŒããŒã«é ä¿¡ããããã«ããå°ãå€éšã® IPv4 (ã€ã³ã¿ãŒããã) ã«éä¿¡ããå¿ èŠããããŸããããšãã°ãã€ã³ããã¯ã¹äœæã®å Žåã
ããŒã¿ã»ã³ã¿ãŒ ãããã¯ãŒã¯èšèšã®æåŸã®æ°åã®å埩ã§ã¯ããã«ãã¬ã€ã€ãŒ Clos ããããžã䜿çšãããŠãããL3 ã®ã¿ã§ããå ã»ã©ïŒ¬ïŒãåºãŠå®å µã®ããæ¯ãã€ããŸãããæåŸã«ãåœç€Ÿã®ã€ã³ãã©ã¹ãã©ã¯ãã£ã«ã¯æ°åäžã®ã³ã³ãã¥ãŒãã£ã³ã° (ãµãŒããŒ) ã€ã³ã¹ã¿ã³ã¹ãå«ãŸããŠããŸããå°ãåã®æ倧ã¯ã©ã¹ã¿ãŒ ãµã€ãºã¯çŽ 2 ãµãŒããŒã§ãããããã¯äž»ã«ãåãã¯ã©ã¹ã¿ ã¬ãã«ã®ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã ãã¹ã±ãžã¥ãŒã©ããªãœãŒã¹å²ãåœãŠãªã©ãã©ã®ããã«æ©èœãããã«ãããã®ã§ãããã€ã³ãã©ã¹ãã©ã¯ã㣠ãœãããŠã§ã¢åŽã§ã®é²æ©ããã£ããããçŸåšãç®æšãµã€ãºã¯ 10 ã€ã®ã³ã³ãã¥ãŒãã£ã³ã° ã¯ã©ã¹ã¿ã«çŽ 100 äžå°ã®ãµãŒããŒãå«ãŸããŠããŸããç§ãã¡ã«ã¯ããã®ãããªã¯ã©ã¹ã¿ãŒå ã§å¹ççãªãªãœãŒã¹ ããŒãªã³ã°ãå¯èœã«ãããããã¯ãŒã¯ ãã¡ã¯ããªãæ§ç¯ã§ããããã«ãããšãã課é¡ããããŸãã
ããŒã¿ã»ã³ã¿ãŒ ãããã¯ãŒã¯ã«äœãæ±ããŸãã?ãŸã第äžã«ãå®äŸ¡ã§ããªãåäžã«åæ£ããã垯åå¹
ããããããããŸãããããã¯ãŒã¯ã¯ãªãœãŒã¹ãããŒã«ã§ããããã¯ããŒã³ã§ããããã§ããæ°ããç®æšèŠæš¡ã¯ã100 ã€ã®ã¯ã©ã¹ã¿ãŒå
ã®ãµãŒããŒçŽ XNUMX äžå°ã§ãã
ãã¡ãããã¹ã±ãŒã©ãã«ã§å®å®ããã³ã³ãããŒã« ãã¬ãŒã³ãå¿ èŠã§ããããã¯ããã®ãããªå€§èŠæš¡ãªã€ã³ãã©ã¹ãã©ã¯ãã£ã§ã¯ãåãªãã©ã³ãã ãªã€ãã³ããããå€ãã®åé¡ãçºçããããã§ãããã³ã³ãããŒã« ãã¬ãŒã³ã«ãã£ãŠãåæ§ã«åé¡ãçºçããããšã¯æãŸãããªãããã§ããåæã«ããã®ç¶æ ãæå°éã«æããããšèããŠããŸããç¶æ ãå°ããã»ã©ããã¹ãŠãããè¯ãå®å®ããŠæ©èœãã蚺æã容æã«ãªããŸãã
ãã¡ããããã®ãããªã€ã³ãã©ã¹ãã©ã¯ãã£ãæåã§ç®¡çããããšã¯äžå¯èœã§ããããã°ããã®éäžå¯èœã§ãã£ããããèªååãå¿ èŠã§ããã§ããéãã®éçšãµããŒããšãæäŸã§ããç¯å²ã®CI/CDãµããŒããå¿ èŠã§ãã
ãã®ãããªèŠæš¡ã®ããŒã¿ã»ã³ã¿ãŒãšã¯ã©ã¹ã¿ãŒã§ã¯ããµãŒãã¹ãäžæããããšãªã段éçãªå±éãšæ¡åŒµããµããŒããããšãã課é¡ãéåžžã«éèŠã«ãªã£ãŠããŸãã 1000 å°ã®ãã·ã³ (ãããã 1 äžå°è¿ãã®ãã·ã³) ã®ãµã€ãºã®ã¯ã©ã¹ã¿ãŒäžã«ããå Žåã§ããããã㯠1 ã€ã®æäœãšããŠå±éã§ããŸããã€ãŸããã€ã³ãã©ã¹ãã©ã¯ãã£ã®æ¡åŒµãèšç»ããŠãããæ°åå°ã®ãã·ã³ã 1 ã€ã®æäœãšããŠè¿œå ãããŸãããã®ããã«ã10 äžå°ã®ãã·ã³ã®ãµã€ãºã®ã¯ã©ã¹ã¿ãŒãããã«çºçããããã§ã¯ãªããæéããããŠæ§ç¯ãããŸãããããŠããã§ã«æ±²ã¿äžããããŠãããã®ãå±éãããŠããã€ã³ãã©ã¹ãã©ã¯ãã£ãåžžã«å©çšå¯èœã§ããããšãæãŸããã§ãã
ãããŠãç§ãã¡ãæã£ãŠãããã®ã®æ®ãããèŠä»¶ã® 6 ã€ã¯ããã«ãããã³ã·ãŒãã€ãŸãä»®æ³åãŸãã¯ãããã¯ãŒã¯ ã»ã°ã¡ã³ããŒã·ã§ã³ã®ãµããŒãã§ããã·ã£ãŒãã£ã³ã°ããã¹ãã«æž¡ããããããããããããã¯ãŒã¯ ãã¡ããªã㯠ã¬ãã«ã§è¡ãå¿ èŠããªããªããã¹ã±ãŒãªã³ã°ãéåžžã«ç°¡åã«ãªããŸããã IPvXNUMX ãšå€§èŠæš¡ãªã¢ãã¬ã¹ç©ºéã®ãããã§ãå éšã€ã³ãã©ã¹ãã©ã¯ãã£ã§éè€ããã¢ãã¬ã¹ã䜿çšããå¿ èŠããªãããã¹ãŠã®ã¢ãã¬ã¹æå®ããã§ã«äžæã«ãªã£ãŠããŸããããŸãããã¹ãã«ãã£ã«ã¿ãªã³ã°ãšãããã¯ãŒã¯ ã»ã°ã¡ã³ããŒã·ã§ã³ãå°å ¥ãããããã§ãããŒã¿ ã»ã³ã¿ãŒ ãããã¯ãŒã¯ã«ä»®æ³ãããã¯ãŒã¯ ãšã³ãã£ãã£ãäœæããå¿ èŠããªããªããŸããã
éåžžã«éèŠãªããšã¯ãç§ãã¡ãå¿
èŠãšããªããã®ã§ããäžéšã®æ©èœããããã¯ãŒã¯ããåé€ã§ããã°ãäœæ¥ãã¯ããã«æ¥œã«ãªããäžè¬ã«ãå©çšå¯èœãªæ©åšããœãããŠã§ã¢ã®éžæè¢ãåºããã蚺æãéåžžã«ç°¡åã«ãªããŸãã
ããã§ã¯ãç§ãã¡ã«å¿ èŠã®ãªããã®ã¯äœã§ããããããããèµ·ãã£ããšãã¯å¿ ãããåãã§ã§ã¯ãªããããã»ã¹ãå®äºãããšãã«å€§ããªå®å µæãæã£ãŠææŸãããšãã§ãããã®ã¯äœã§ãããã?
ãŸãã¯L2æŸæ£ãå®éã® L2 ããšãã¥ã¬ãŒãããã L3 ãå¿ èŠãããŸãããã¢ããªã±ãŒã·ã§ã³ã¹ã¿ãã¯ãå¶åŸ¡ããŠãããããã»ãšãã©äœ¿çšãããŸãããç§ãã¡ã®ã¢ããªã±ãŒã·ã§ã³ã¯æ°Žå¹³æ¹åã«ã¹ã±ãŒã©ãã«ã§ãLXNUMX ã¢ãã¬ã¹æå®ã§åäœããåã ã®ã€ã³ã¹ã¿ã³ã¹ã倱ãããããšãããŸãå¿é ãããæ°ããã€ã³ã¹ã¿ã³ã¹ãããŒã«ã¢ãŠãããã ãã§ããå€ãã¢ãã¬ã¹ã§ããŒã«ã¢ãŠãããå¿ èŠã¯ãããŸãããã¯ã©ã¹ã¿ãŒå ã«ãããã·ã³ã®å¥ã®ã¬ãã«ã®ãµãŒãã¹æ€åºãšç£èŠããã®ã¿ã¹ã¯ããããã¯ãŒã¯ã«å§ä»»ããããšã¯ãããŸããããããã¯ãŒã¯ã®ä»äºã¯ããã€ã³ã A ãããã€ã³ã B ã«ãã±ãããé ä¿¡ããããšã§ãã
ãŸãããããã¯ãŒã¯å ã§ã¢ãã¬ã¹ã移åããç¶æ³ãçºçããŠããªãããããããç£èŠããå¿ èŠããããŸããå€ãã®èšèšã§ã¯ãããã¯éåžžãVM ã¢ããªãã£ããµããŒãããããã«å¿ èŠã§ããç§ãã¡ã¯ã倧æ Yandex ã®å éšã€ã³ãã©ã¹ãã©ã¯ãã£ã§ã¯ä»®æ³ãã·ã³ã®ã¢ããªãã£ã䜿çšããŠããŸããããŸããããšã䜿çšãããšããŠãããããã¯ãŒã¯ ãµããŒãã§ã¯ãã®ãããªããšã¯èµ·ãããªãã¯ãã ãšèããŠããŸããæ¬åœã«å¿ èŠãªå Žåã¯ããã¹ã ã¬ãã«ã§å®è¡ããã¢ã³ããŒã¬ã€èªäœ (ãã©ã³ã¹ããŒã ãããã¯ãŒã¯) ã®ã«ãŒãã£ã³ã° ã·ã¹ãã ã«è§Šããããé床ã«åçå€æŽãå ãããããªãããã«ããªãŒããŒã¬ã€ã«ç§»è¡ã§ããã¢ãã¬ã¹ãããã·ã¥ããå¿ èŠããããŸãã ã
ç§ãã¡ã䜿çšããŠããªããã 1 ã€ã®ãã¯ãããžãŒã¯ãã«ããã£ã¹ãã§ãããåžæã§ããã°ããã®çç±ã詳ããã話ããŸããããã«ãããäœæ¥ãã¯ããã«æ¥œã«ãªããŸãã誰ããããã«å¯ŸåŠããæãåçŽãªã€ã³ã¹ããŒã«ãé€ããã¹ãŠã®ãã«ããã£ã¹ã ã³ã³ãããŒã« ãã¬ãŒã³ãã©ã®ããã«èŠããããæ£ç¢ºã«èª¿ã¹ãå Žåãããã¯å€§ããªé çã®çš®ãšãªãããã§ããããã«ãããšãã°ãé©åã«æ©èœãããªãŒãã³ãœãŒã¹å®è£ ãèŠã€ããã®ã¯å°é£ã§ãã
æåŸã«ããããã¯ãŒã¯ãããŸãå€åããªãããã«èšèšããŸããã«ãŒãã£ã³ã° ã·ã¹ãã ã«ãããå€éšã€ãã³ãã®ãããŒã¯å°ãããšããäºå®ãåœãŠã¯ãŸããŸãã
ããŒã¿ã»ã³ã¿ãŒ ãããã¯ãŒã¯ãéçºããå Žåãã©ã®ãããªåé¡ãçºçããã©ã®ãããªå¶éãèæ
®ããå¿
èŠãããã®ã§ãããã?ãã¡ããè²»çšãããããŸããã¹ã±ãŒã©ããªãã£ãç§ãã¡ãæé·ãããã¬ãã«ããµãŒãã¹ãåæ¢ããã«æ¡åŒµããå¿
èŠãããã垯åå¹
ãå¯çšæ§ãç£èŠã·ã¹ãã ãéçšããŒã åãã«ããããã¯ãŒã¯äžã§äœãèµ·ãã£ãŠããããå¯èŠåããŸããèªååã®ãµããŒã - è¿œå ã¬ã€ã€ãŒã®å°å
¥ãå«ããããŸããŸãªã¿ã¹ã¯ãããŸããŸãªã¬ãã«ã§è§£æ±ºã§ããããããããå¯èœãªéããµããŒãããŸãããŸãããã³ããŒã«äŸåããããšã¯[ãããã]ãããŸãããæŽå²äžã®æ代ã¯ç°ãªããŸãããã©ã®ã»ã¯ã·ã§ã³ãèŠããã«ãã£ãŠããã®ç¬ç«ã¯éæããããã£ãããéæãã«ããã£ããããŸãããããã¯ãŒã¯ ããã€ã¹ ãããã®æé¢å³ãèŠããšãæè¿ãŸã§ãé«ã¹ã«ãŒãããã®ããããå¿
èŠãªå Žåããã³ããŒããã®ç¬ç«æ§ã«ã€ããŠè©±ãããšã¯éåžžã«æ¡ä»¶ä»ãã§ããã
ãããã¯ãŒã¯ãæ§ç¯ããã«ã¯ã©ã®ãããªè«çããããžã䜿çšããŸãã?ããã¯è€æ°ã¬ãã«ã®ã¯ãã«ãªããŸããå®éãçŸæç¹ã§ã¯å®è³ªçãªä»£æ¿æ段ã¯ãããŸããããããŠãClos ããããžã¯ã倧èŠæš¡ãªåºæ°ã¹ã€ãããããã°ãçŸåšåŠè¡çã«é¢å¿ã®ããããŸããŸãªé«åºŠãªããããžãšæ¯èŒããå Žåã§ããéåžžã«åªããŠããŸãã
ãã«ãã¬ãã« Clos ãããã¯ãŒã¯ã¯å€§ãŸãã«ã©ã®ããã«æ§æãããŠããããã®äžã§ããŸããŸãªèŠçŽ ã¯äœãšåŒã°ããŠããŸãã?ãŸã第äžã«ã颚ãç«ã¡ãã©ããåã§ãã©ããåã§ãã©ããæ±ã§ãã©ãã西ãªã®ããèªåã®æ¹åã«åããŸãããã®ã¿ã€ãã®ãããã¯ãŒã¯ã¯éåžžãéåžžã«å€§èŠæš¡ãªè¥¿ããæ±ãžã®ãã©ãã£ãã¯ãæ±ããããã¯ãŒã¯ã«ãã£ãŠæ§ç¯ãããŸããæ®ãã®èŠçŽ ã«é¢ããŠã¯ãäžéšã«ã¯å°ããªã¹ã€ããããçµã¿ç«ãŠãããä»®æ³ã¹ã€ããããããŸããããã Clos ãããã¯ãŒã¯ã®ååž°çæ§ç¯ã®äž»ãªã¢ã€ãã¢ã§ããããçš®ã®åºæ°ãæã€èŠçŽ ãååŸããããããæ¥ç¶ããŠãååŸãããã®ããã倧ããªåºæ°ãæã€ã¹ã€ãããšã¿ãªããããã«ããŸããããã«å¿
èŠãªå Žåã¯ãæé ãç¹°ãè¿ãããšãã§ããŸãã
ããšãã°ã1 ã¬ãã«ã® Clo ã®å Žåãå³å ã§åçŽãªã³ã³ããŒãã³ããæ確ã«èå¥ã§ããå Žåããããã¯éåžžãã¬ãŒã³ãšåŒã°ããŸãã XNUMX ã¬ãã«ã®ã¹ãã€ã³ ã¹ã€ãã (ãã¹ãŠå¢çã¹ã€ããã ToR ã¹ã€ããã§ã¯ãªãããã©ã³ãžããã®ã¿ã«äœ¿çšãããŸã) ãåãã Clos ãæ§ç¯ããå Žåããã¬ãŒã³ã¯ããè€éã«èŠããŸããXNUMX ã¬ãã«ã®ãã¬ãŒã³ã¯æ¬¡ã®ããã«ãªããŸãã ToR ãŸãã¯ãªãŒã ã¹ã€ããã®ãããã¯ãšããããã«é¢é£ä»ãããã第 XNUMX ã¬ãã«ã®ã¹ãã€ã³ ã¹ã€ãããããããšåŒã³ãŸãããããã®äžéšã«ããã¹ãã€ã³ XNUMX ã¬ãã«ã®ã¹ãã€ã³ ã¹ã€ããã¯ããããã®äžéšãã€ãŸããããã®äžéšã§ãããã¡ã¯ããªå šäœã®æäžéšã«ããã¹ã€ããã¯ããã¡ã¯ããªã®æäžå±€ãã€ãŸããã¡ããªãã¯ã®ãããã§ãã
ãã¡ãããClos ãããã¯ãŒã¯ã¯ããªãåããæ§ç¯ãããŠãããšããçåãçããŸããããã®ã¢ã€ãã¢èªäœã¯äžè¬çã«å€å
žçãªé»è©±ãTDM ãããã¯ãŒã¯ã®æ代ããæ¥ãŠããŸããããããããããã£ãšè¯ããã®ãç»å Žããããäœããã£ãšè¯ãã§ãããããããªãïŒã¯ããšããããçè«çã«ã¯ããã§ãããå®éã«ã¯è¿ãå°æ¥ã«ã¯ééããªãããã§ã¯ãããŸãããèå³æ·±ãããããžãå€æ°ããããããã®äžéšã¯éçšç°å¢ã§ã䜿çšãããŠããŸããããšãã°ãDragonfly 㯠HPC ã¢ããªã±ãŒã·ã§ã³ã§äœ¿çšãããŸãã XpanderãFatCliqueãJellyfish ãªã©ã®èå³æ·±ãããããžããããŸããæè¿ã® SIGCOMM ã NSDI ãªã©ã®ã«ã³ãã¡ã¬ã³ã¹ã®ã¬ããŒããèŠããšãClos ããã (äœããã®) åªããç¹æ§ãæã€ä»£æ¿ããããžãŒã«é¢ããç 究ãããªãå€ãèŠã€ãããŸãã
ããããããããã¹ãŠã®ããããžã«ã¯ 1 ã€ã®èå³æ·±ãç¹æ§ããããŸããããã«ãããç§ãã¡ãæ±çšããŒããŠã§ã¢äžã«æ§ç¯ããããšããŠããããŒã¿ã»ã³ã¿ãŒ ãããã¯ãŒã¯ãžã®å®è£ ã劚ããããããªãã®è²»çšãããããŸãããããã®ä»£æ¿ããããžã®ãã¹ãŠã«ãããŠãæ®å¿µãªãã垯åå¹ ã®ã»ãšãã©ã¯æçãã¹çµç±ã§ã¯ã¢ã¯ã»ã¹ã§ããŸããããããã£ãŠãåŸæ¥ã®ã³ã³ãããŒã« ãã¬ãŒã³ã䜿çšããæ©äŒã¯å³åº§ã«å€±ãããŸãã
çè«çã«ã¯ããã®åé¡ã®è§£æ±ºçã¯ããã£ãŠããŸãããããã¯ãããšãã°ãk-shortest ãã¹ã䜿çšãããªã³ã¯ç¶æ ã®å€æŽã§ããããã¯ããå®çšŒåç°å¢ã§å®è£ ãããæ©åšã§åºãå©çšã§ãããããªãããã³ã«ã¯ãããŸããã
ããã«ã容éã®ã»ãšãã©ã¯æçãã¹çµç±ã§ã¯ã¢ã¯ã»ã¹ã§ããªãããããããã®ãã¹ããã¹ãŠéžæããã«ã¯ãã³ã³ãããŒã« ãã¬ãŒã³ä»¥äžã®å€æŽãå¿ èŠã§ã (ã¡ãªã¿ã«ãããã¯ã³ã³ãããŒã« ãã¬ãŒã³ã®ç¶æ ã®ããªãå€ãã®éšåã§ã)ã転éãã¬ãŒã³ãå€æŽããå¿ èŠããããååãšããŠãå°ãªããšã 2 ã€ã®è¿œå æ©èœãå¿ èŠã§ããããã¯ããã±ãã転éã«é¢ãããã¹ãŠã®æ±ºå®ããããšãã°ãã¹ãäžã§ 1 åã ãè¡ãæ©èœã§ããå®éãããã¯ãœãŒã¹ ã«ãŒãã£ã³ã°ã§ãããçžäºæ¥ç¶ãããã¯ãŒã¯ã«é¢ããæç®ã§ã¯ãäžæ¬è»¢é決å®ãšåŒã°ããããšããããŸãããããŠãé©å¿ã«ãŒãã£ã³ã°ã¯ãããã¯ãŒã¯èŠçŽ ã«å¿ èŠãªæ©èœã§ãããããã¯èŠçŽãããšãããšãã°ããã¥ââãŒã®æå°è² è·ã«é¢ããæ å ±ã«åºã¥ããŠæ¬¡ã®ããããéžæãããšããäºå®ã«åž°çããŸããäžäŸãšããŠãä»ã®ãªãã·ã§ã³ãå¯èœã§ãã
ãããã£ãŠããã®æ¹åæ§ã¯èå³æ·±ãã®ã§ãããæ®å¿µãªãããçŸæç¹ã§ã¯ãããé©çšããããšã¯ã§ããŸããã
ããŠãClos è«çããããžã«èœã¡çããŸãããã©ã®ããã«ã¹ã±ãŒã«ããã®ã§ãããã?ãããã©ã®ããã«æ©èœããäœãã§ããããèŠãŠã¿ãŸãããã
Clos ãããã¯ãŒã¯ã«ã¯ãèŠçŽ ã®åºæ°ãšãããã¯ãŒã¯ã®ã¬ãã«æ°ãšãã 2 ã€ã®äž»ãªãã©ã¡ãŒã¿ããããããããå€æŽããŠç¹å®ã®çµæãåŸãããšãã§ããŸããäž¡æ¹ããµã€ãºã«ã©ã®ããã«åœ±é¿ãããã瀺ãæŠç¥å³ããããŸããçæ³çã«ã¯ãäž¡æ¹ãçµã¿åãããŸãã
Clos ãããã¯ãŒã¯ã®æçµçãªå¹
ã¯ãååºæ°ã®ã¹ãã€ã³ ã¹ã€ããã®ãã¹ãŠã®ã¬ãã«ãããŠã³ããŠãããªã³ã¯ã®æ°ãåå²æ¹æ³ã®ç©ã§ããããšãããããŸããããããããã¯ãŒã¯ã®ãµã€ãºãæ¡å€§ããæ¹æ³ã§ãã
ç¹ã« ToR ã¹ã€ããã®å®¹éã«é¢ããŠã¯ã2 ã€ã®ã¹ã±ãŒãªã³ã° ãªãã·ã§ã³ããããŸããäžè¬çãªããããžãç¶æããªãããããé«éãªãªã³ã¯ã䜿çšãããããã¬ãŒã³ãè¿œå ããããšãã§ããŸãã
Clos ãããã¯ãŒã¯ã®æ¡åŒµããŒãžã§ã³ (å³äžé ) ãèŠãŠãäžã® Clos ãããã¯ãŒã¯ããããã®å³ã«æ»ããš...
...ããã¯ãŸã£ããåãããããžã§ããããã®ã¹ã©ã€ãã§ã¯ããã³ã³ãã¯ãã«æããããŸããŠãããå·¥å Žã®å¹³é¢ãäºãã«éãåããããŠããŸããåãã§ãã
Clos ãããã¯ãŒã¯ã®ã¹ã±ãŒãªã³ã°ãæ°å€ã§è¡šããšã©ã®ããã«ãªããŸãã?ããã§ã¯ãååŸã§ãããããã¯ãŒã¯ã®æ倧å¹
ãã©ãã¯ãToR ã¹ã€ããããŸãã¯ãªãŒã ã¹ã€ããã®æå€§æ° (ããããã©ãã¯å
ã«ãªãå Žå) ã«ã€ããŠã®ããŒã¿ãæäŸããŸããã¹ãã€ã³ ã¬ãã«ã«äœ¿çšããã¹ã€ããã®åºæ°ã«å¿ããŠååŸã§ããŸãã䜿çšããã¬ãã«ã®æ°ã
ããã§ã¯ãã©ãã¯ããšã« 20 kW ã«åºã¥ããŠãã©ãã¯ã®æ°ããµãŒããŒã®æ°ãããã³ããããã¹ãŠãæ¶è²»ã§ããããããã®éã瀺ããŸããå ã»ã©ãçŽ 100 äžãµãŒããŒã®ã¯ã©ã¹ã¿ãŒ ãµã€ãºãç®æããŠãããšè¿°ã¹ãŸããã
ãã®èšèšå šäœã§ã64 ã€åã®ãªãã·ã§ã³ãèå³æ·±ãããšãããããŸãã 128 å±€ã®ã¹ãã€ã³ãš 128 ããŒã ã¹ã€ãããåãããªãã·ã§ã³ããããŸãããããã§ã¯å°ãäžååã§ããããã«ã32 ã¬ãã«ã® 150 ããŒã (åºæ° XNUMX) ã¹ãã€ã³ ã¹ã€ããããŸã㯠XNUMX ã¬ãã«ã®åºæ° XNUMX ã®ã¹ã€ããã«æé©ãªãªãã·ã§ã³ããããŸãããããŠãã©ã®ãããªå Žåã§ããããå€ãã®åºæ°ãšããå€ãã®ã¬ã€ã€ãŒãããå Žåãéåžžã«å€§èŠæš¡ãªãããã¯ãŒã¯ãæ§ç¯ã§ããŸãããäºæ³ãããæ¶è²»éã«æ³šç®ãããšãéåžžã¯ã®ã¬ã¯ããåäœã«ãªããŸããã±ãŒãã«ãæ·èšããããšã¯å¯èœã§ãããXNUMXã€ã®å Žæã§ããã»ã©å€ãã®é»åãåŸãããšãã§ãããã«ãããŸãããããŒã¿ã»ã³ã¿ãŒã«é¢ããçµ±èšãå ¬éããŒã¿ãèŠãŠã¿ããšãæšå®å®¹éã XNUMX MW ãè¶ ããããŒã¿ã»ã³ã¿ãŒã¯ã»ãšãã©ãããŸããããã倧ããªãã®ã¯éåžžãããŒã¿ ã»ã³ã¿ãŒ ãã£ã³ãã¹ã§ãããããã€ãã®å€§èŠæš¡ãªããŒã¿ ã»ã³ã¿ãŒãäºãã«éåžžã«è¿æ¥ããŠé 眮ãããŠããŸãã
ããäžã€éèŠãªãã©ã¡ãŒã¿ããããŸããå·ŠåŽã®åãèŠããšã䜿çšå¯èœãªåž¯åå¹ ãããã«ãªã¹ããããŠããŸãã Clos ãããã¯ãŒã¯ã§ã¯ãããŒãã®å€§éšåãã¹ã€ããéã®æ¥ç¶ã«è²»ããããŠããããšãç°¡åã«ããããŸãã䜿çšå¯èœãªåž¯åå¹ ãã€ãŸã䟿å©ãªã¹ããªããã¯ããµãŒããŒã«å¯ŸããŠå€éšã«æäŸã§ãããã®ã§ããåœç¶ã®ããšãªãããç§ã¯æ¡ä»¶ä»ãããŒããç¹ã«åž¯åã«ã€ããŠè©±ããŠããŸããäžè¬ã«ããããã¯ãŒã¯å ã®ãªã³ã¯ã¯ãµãŒããŒãžã®ãªã³ã¯ãããé«éã§ããã垯åå¹ ã®åäœãããããµãŒããŒæ©åšã«éä¿¡ã§ããåã ãããããã¯ãŒã¯èªäœå ã«ãŸã ããçšåºŠã®åž¯åå¹ ãååšããŸãããããŠãäœæããã¬ãã«ãå¢ããã»ã©ããã®ã¹ããªãããå€éšã«æäŸããããã®å ·äœçãªã³ã¹ããé«ããªããŸãã
ããã«ããã®è¿œå ã®åž¯åããããŸã£ããåãã§ã¯ãããŸãããã¹ãã³ã¯çãã§ãããDAC (çŽæ¥æ¥ç¶é ç·ãã€ãŸã Twinax ã±ãŒãã«) ããã«ãã¢ãŒãå ã®ãããªãã®ã䜿çšã§ããŸãããå€ããå°ãªãããããªãã®è²»çšãããããŸããããé·ãã¹ãã³ã«ç§»è¡ãããšããã«ãéåžžããããã¯ã·ã³ã°ã«ã¢ãŒãå ã§ããããã®è¿œå ã®åž¯åå¹ ã®ã³ã¹ãã¯èããå¢å ããŸãã
ããäžåºŠåã®ã¹ã©ã€ãã«æ»ããŸããããªãŒããŒãµãã¹ã¯ãªãã·ã§ã³ãªã㧠Clos ãããã¯ãŒã¯ãäœæãããšãå³ãèŠãŠãããã¯ãŒã¯ãã©ã®ããã«æ§ç¯ãããŠããããç°¡åã«ç¢ºèªã§ããŸããåã¬ãã«ã®ã¹ãã€ã³ ã¹ã€ãããè¿œå ããŠãæåã®ã¹ããªããå šäœãç¹°ãè¿ããŸããåºããã©ã¹ ã¬ãã« - åã垯åãåã®ã¬ãã«ãšåãæ°ã®ã¹ã€ããäžã®ããŒããããã³åãæ°ã®ãã©ã³ã·ãŒããŒãè¿œå ãããŸãããããã£ãŠãã¹ãã€ã³ ã¹ã€ããã®ã¬ãã«ã®æ°ãæå°éã«æããããšãéåžžã«æãŸããã§ãã
ãã®å³ã«åºã¥ããŠãåºæ° 128 ã®ã¹ã€ããã®ãããªãã®ãæ¬åœã«æ§ç¯ãããããšã¯æããã§ãã
ããã§ã¯ãååçã«ã¯ä»èšã£ãããšãšåãã§ãããããã¯åŸã§æ€èšããããã®ã¹ã©ã€ãã§ãã
ãã®ãããªã¹ã€ãããšããŠã¯ã©ã®ãããªéžæè¢ãããã®ã§ãããã?ãã®ãããªãããã¯ãŒã¯ãã€ãã«ã·ã³ã°ã«ããã ã¹ã€ããäžã«æ§ç¯ã§ããããã«ãªã£ãã®ã¯ãç§ãã¡ã«ãšã£ãŠéåžžã«åã°ãããã¥ãŒã¹ã§ããããã¯éåžžã«ã¯ãŒã«ã§ãçŽ æŽãããæ©èœããããããããŸããããšãã°ãå
éšæ§é ãã»ãšãã©ãããŸãããã€ãŸããå£ãããããªããŸããããŸããŸãªåœ¢ã§å£ããŸããã幞ããªããšã«å®å
šã«å£ããŸããã¢ãžã¥ãŒã«åŒããã€ã¹ã«ã¯ãé£æ¥ããããã€ã¹ãã³ã³ãããŒã« ãã¬ãŒã³ã®èŠ³ç¹ããã¯æ©èœããŠããããã«èŠããŠããããšãã°ãã¡ããªãã¯ã®äžéšã倱ãããæ©èœããŠããªãå Žåã«ãå€æ°ã®é害 (éåžžã«äžå¿«ãªåé¡) ãçºçããŸãããã«ãã£ãã·ãã£ã§ããããŠããããžã®ãã©ãã£ãã¯ã¯ããããå®å
šã«æ©èœããŠãããšããäºå®ã«åºã¥ããŠãã©ã³ã¹ããšãããŠãããéè² è·ã«ãªãå¯èœæ§ããããŸãã
ãããã¯ãããšãã°ãã¢ãžã¥ãŒã«åŒããã€ã¹ã®å éšã«ã¯é«é SerDe ããããå éšã¯éåžžã«è€éã§ãããããããã¯ãã¬ãŒã³ã§åé¡ãçºçããŸãã転éèŠçŽ éã®ç¬Šå·ã¯åæããŠããããåæããŠããŸãããäžè¬ã«ãå€æ°ã®èŠçŽ ã§æ§æãããçç£çãªã¢ãžã¥ã©ãŒããã€ã¹ã¯ãååãšããŠããã®å éšã«åã Clos ãããã¯ãŒã¯ãå«ã¿ãŸããã蚺æããã®ã¯éåžžã«å°é£ã§ããå€ãã®å Žåããã³ããŒèªèº«ã§ã蚺æããããšãå°é£ã§ãã
ãŸããããã€ã¹ãå£åããŠãããããžããå®å šã«å€ããããšã¯ãªããšãããå€æ°ã®é害ã·ããªãªããããŸããç§ãã¡ã®ãããã¯ãŒã¯ã¯å€§èŠæš¡ã§ãããããåäžã®èŠçŽ éã®ãã©ã³ã¹ãç©æ¥µçã«äœ¿çšãããŠããããããã¯ãŒã¯ã¯éåžžã«èŠåçã§ããã€ãŸãããã¹ãŠãæ£åžžã«åäœããŠãã 1 ã€ã®ãã¹ã¯ä»ã®ãã¹ãšäœãå€ãããŸãããåçŽã«äžéšã倱ãæ¹ãæçã§ããããããžããããã€ã¹ãåé€ãããšãäžéšã®ããã€ã¹ã¯åäœããŠããããã«èŠããŠããäžéšã®ããã€ã¹ãåäœããªããšããç¶æ³ã«é¥ãããšããªããªããŸãã
ã·ã³ã°ã«ããã ããã€ã¹ã®æ¬¡ã®åªããç¹åŸŽã¯ãããã€ã¹ãããè¯ããããéãé²åããããšã§ãããŸãã容éãåªããŠããåŸåããããŸããçµã¿ç«ãŠããã倧èŠæš¡ãªæ§é ãååšäžã«é
眮ãããšãåãé床ã®ããŒãã®ã©ã㯠ãŠããããããã®å®¹éã¯ãã¢ãžã¥ã©ãŒ ããã€ã¹ã®ã»ãŒ 2 åã«ãªããŸããåäžããããäžå¿ã«æ§ç¯ãããããã€ã¹ã¯ãã¢ãžã¥ãŒã«åŒã®ãã®ãããèããå®äŸ¡ã§ãæ¶è²»ãšãã«ã®ãŒãå°ãªããªããŸãã
ãããããã¡ããããã«ã¯çç±ãããããã¡ãªããããããŸãããŸããåºæ°ã¯ã»ãšãã©ã®å Žåãã¢ãžã¥ãŒã«åŒããã€ã¹ã®åºæ°ãããå°ãããªããŸãã 128 ããŒããåãã XNUMX ã€ã®ããããäžå¿ã«æ§ç¯ãããããã€ã¹ãå ¥æã§ããã°ãæ°çŸã®ããŒããåããã¢ãžã¥ãŒã«åŒããã€ã¹ãåé¡ãªãå ¥æã§ããããã«ãªããŸãã
ããã¯ã転éããŒãã«ã®ãµã€ãºãèããå°ãããªããååãšããŠãããŒã¿ ãã¬ãŒã³ã®ã¹ã±ãŒã©ããªãã£ã«é¢é£ãããã¹ãŠã®ãµã€ãºãå°ãããªããŸããæµ ããããã¡ããããŠãååãšããŠãæ©èœã¯ããªãå¶éãããŠããŸãããããããããã®å¶éãç解ããæéå ã«æ³šæããŠåé¿ããããåçŽã«èæ ®ãããããã°ãããã¯ããã»ã©æãããããšã§ã¯ãªãããšãããããŸããæè¿ããããç»å Žããåºæ° 128 ã®ããã€ã¹ã§ã¯ãåºæ°ãå°ãããŠãåé¡ã¯ãªããªããã¹ãã€ã³ã XNUMX å±€çµã¿èŸŒãããšãã§ããŸããããããç§ãã¡ã«ãšã£ãŠèå³æ·±ããã®ã XNUMX ã€ããå°ãããã®ãæ§ç¯ããããšã¯äŸç¶ãšããŠäžå¯èœã§ãã XNUMX ã€ã®ã¬ãã«ã§ã¯ãéåžžã«å°ããªã¯ã©ã¹ã¿ãŒãååŸãããŸãã以åã®èšèšãšèŠä»¶ã§ãããäŸç¶ãšããŠãããäžåã£ãŠããŸããã
å®éãçªç¶ãœãªã¥ãŒã·ã§ã³ãç¬æžéã«é¥ã£ããšããŠããæ¡åŒµããæ¹æ³ã¯ãŸã ãããŸãããµãŒããŒãæ¥ç¶ãããŠããæåŸ (ãŸãã¯æå) ã®æäžäœã¬ãã«ã¯ ToR ã¹ã€ãããŸãã¯ãªãŒã ã¹ã€ããã§ããããããããã« 1 ã€ã®ã©ãã¯ãæ¥ç¶ããå¿ èŠã¯ãããŸããããããã£ãŠã解決çãçŽååã«æºããªãå Žåã¯ãåçŽã«åºæ°ã®å€§ããã¹ã€ãããäžäœã¬ãã«ã«äœ¿çšããããšãã° 2 ã€ãŸã㯠3 ã€ã®ã©ãã¯ã 1 ã€ã®ã¹ã€ããã«æ¥ç¶ããããšãèããããšãã§ããŸããããããªãã·ã§ã³ã§ãããã³ã¹ãã¯ããããŸãããéåžžã«ããŸãæ©èœãããµã€ãºãçŽ 2 åã«ããå¿ èŠãããå Žåã«ã¯è¯ã解決çãšãªããŸãã
èŠçŽãããšã8 ã€ã®ãã¡ã¯ããªãŒå±€ãæ〠2 ã¬ãã«ã®ã¹ãã€ã³ãæã€ããããžãŒãæ§ç¯ããŠããŸãã
ç©çåŠã¯ã©ããªãã®ã§ããããïŒéåžžã«åçŽãªèšç®ã 1 ã¬ãã«ã®ã¹ãã€ã³ãããå Žåãã¹ã€ãã㯠2 ã¬ãã«ã®ã¿ã«ãªãããããã¯ãŒã¯å
ã«ã¯ãµãŒããŒãããªãŒã ã¹ã€ãããã¹ãã€ã³ XNUMXãã¹ãã€ã³ XNUMX ãŸã§ã® XNUMX ã€ã®ã±ãŒãã« ã»ã°ã¡ã³ããååšããããšãäºæ³ãããŸãã䜿çšæ¹æ³ã¯ãTwinaxããã«ãã¢ãŒããã·ã³ã°ã« ã¢ãŒãã§ããããã§ãã©ã®ãããªã¹ããªãããå©çšå¯èœããäŸ¡æ Œã¯ãããããç©ççãªå¯žæ³ã¯äœããã«ããŒã§ããç¯å²ã¯äœããã¢ããã°ã¬ãŒãæ¹æ³ãæ€èšããå¿
èŠããããŸãã
ã³ã¹ãçã«ã¯äœã§ãæããããŸãã Twinax ã¯ãã¢ã¯ãã£ã ãªããã£ã¯ã¹ãããå€§å¹ ã«å®ãã端ãããã©ã€ãããšã«ååŸããå Žåããã«ãã¢ãŒã ãã©ã³ã·ãŒããŒãããå®ãã100 ã®ã¬ããã ã¹ã€ãã ããŒããããè¥å¹²å®ããªããŸãããŸããã·ã³ã°ã«ã¢ãŒãå åŠç³»ãããã³ã¹ããäœãããšã«æ³šæããŠãã ãããããã¯ãã·ã³ã°ã«ã¢ãŒããå¿ èŠãªãã©ã€ããããŒã¿ã»ã³ã¿ãŒã§ã¯ãããŸããŸãªçç±ãã CWDM ã䜿çšããã®ãçã«ããªã£ãŠããŸããããã©ã¬ã«ã·ã³ã°ã«ã¢ãŒã (PSM) ã¯åäœããã®ã«ããŸã䟿å©ã§ã¯ãªãããã§ããéåžžã«å€§ããªããã¯ã§ãã¡ã€ããŒãåŸããããããã®æè¡ã«çŠç¹ãåœãŠããšããããã次ã®ãããªäŸ¡æ Œéå±€ãåŸãããŸãã
ãã 100 ã€ã®æ³šæ: æ®å¿µãªãããéã¢ã»ã³ãã«ããã 4 ïœ 25x28 ãã«ãã¢ãŒã ããŒãã䜿çšããããšã¯ã»ãšãã©ã§ããŸããã SFP28 ãã©ã³ã·ãŒããŒã®èšèšäžã®ç¹åŸŽã«ããã100 ã®ã¬ããã QSFPXNUMX ãããããã»ã©å®äŸ¡ã§ã¯ãããŸããããããŠããã®ãã«ãã¢ãŒãã®éã¢ã»ã³ããªã¯ããŸãããŸãæ©èœããŸããã
ãã 1 ã€ã®å¶éã¯ãã³ã³ãã¥ãŒãã£ã³ã° ã¯ã©ã¹ã¿ãŒã®ãµã€ãºãšãµãŒããŒã®æ°ã«ãããããŒã¿ ã»ã³ã¿ãŒãç©ççã«å€§ãããªã£ãŠããŸãããšã§ããããã¯ãå°ãªããšã 1 ã€ã®ãã©ã€ãã singlemod ã§å®è¡ããå¿ èŠãããããšãæå³ããŸããç¹°ãè¿ããŸããããããã®ç©ççãªãµã€ãºã«ããã2 ã¹ãã³ã® Twinax (é ç·ã±ãŒãã«) ãå®è¡ããããšã¯ã§ããŸããã
ãã®çµæãäŸ¡æ Œãæé©åãããã®èšèšã®ãžãªã¡ããªãèæ ®ãããšãCWDM ã䜿çšã㊠Twinax ã® 1 ã¹ãã³ããã«ãã¢ãŒãã® 1 ã¹ãã³ãããã³ã·ã³ã°ã«ã¢ãŒãã® 1 ã¹ãã³ãåŸãããŸããããã«ã¯ãèããããã¢ããã°ã¬ãŒã ãã¹ãèæ ®ãããŸãã
ãããæè¿ã®ç¶æ³ã§ãããç§ãã¡ãã©ãã«åãã£ãŠããã®ãããããŠäœãå¯èœãªã®ãã瀺ããŠããŸããå°ãªããšãããã«ãã¢ãŒããšã·ã³ã°ã«ã¢ãŒãã®äž¡æ¹ã§ 50 ã®ã¬ããã SerDes ã«ç§»è¡ããæ¹æ³ã¯æããã§ããããã«ãçŸåšããã³å°æ¥ã® 400G ã®ã·ã³ã°ã«ã¢ãŒã ãã©ã³ã·ãŒããŒã®å
容ã«æ³šç®ãããšãå€ãã®å Žåãé»æ°åŽãã 50G SerDes ãå°çãããšãã§ããã¬ãŒã³ããã 100 Gbps ããã§ã«å
ã«éãããããšãã§ããŸãããããã£ãŠã50 ã«ç§»è¡ãã代ããã«ã100 ã®ã¬ããã SerDes ããã³ã¬ãŒã³ããã 100 Gbps ãžã®ç§»è¡ãè¡ãããå¯èœæ§ã¯ååã«ãããŸããããã¯ãå€ãã®ãã³ããŒã®çŽæã«ããã°ãããã«å©çšå¯èœã«ãªãããšãäºæ³ãããŠããããã§ãã 50G SerDes ã®æåã®ã³ããŒãã»ãŒæ¥å¹Žå±éãããããã100G SerDes ãæéã ã£ãæéã¯ããã»ã©é·ãã¯ãªãããã§ãããããŠãã®åŸãã°ãããããšãããããçžå¿ã®éé¡ã®äŸ¡å€ãä»ãã§ãããã
ç©çåŠã®éžæã«ã€ããŠãã 400 ã€ãã¥ã¢ã³ã¹ããããŸããåççã«ã¯ã200G SerDes ã䜿çšã㊠50 ãŸã㯠128 ã®ã¬ããã ããŒãããã§ã«äœ¿çšã§ããŸããããããããã¯ããŸãæå³ããªãããšãããããŸããããªããªããåã«è¿°ã¹ãããã«ãåœç¶ã®ããšãªãããã¹ã€ããã«ã¯ããªã倧ããªåºæ°ãå¿
èŠã ããã§ããå¿
èŠãªã®ã¯ XNUMX ã§ãããããŠãããã容éãéãããŠããããªã³ã¯é床ãäžãããšãèªç¶ã«åºæ°ãæžå°ããå¥è·¡ã¯èµ·ãããŸããã
ãŸããé£è¡æ©ã䜿çšããããšã§ç·å®¹éãå¢ããããšãã§ããç¹å¥ãªã³ã¹ãã¯ãããããé£è¡æ©ã®æ°ãè¿œå ããããšãã§ããŸããåºæ°ã倱ã£ãå Žåã¯ãè¿œå ã®ã¬ãã«ãå°å ¥ããå¿ èŠããããŸãããã®ãããçŸåšã®ç¶æ³ã§ã¯ããããããšã«å©çšå¯èœãªæ倧容éãèæ ®ãããšã100 ã®ã¬ããã ããŒãã䜿çšããæ¹ãå¹ççã§ããããšãããããŸãããã倧ããªåºæ°ãååŸããŸãã
次ã®è³ªåã¯ãç©çåŠãã©ã®ããã«çµç¹ããããã§ãããã±ãŒãã« ã€ã³ãã©ã¹ãã©ã¯ãã£ã®èŠ³ç¹ããã§ããããªãé¢çœãæ¹æ³ã§çµç¹ãããŠããããšãããããŸããããªãŒã ã¹ã€ãããšç¬¬ 1 ã¬ãã«ã®ã¹ãã€ã³ã®éã®ã±ãŒãã«é
ç· - ããã«ã¯å€ãã®ãªã³ã¯ã¯ãªãããã¹ãŠãæ¯èŒçåçŽã«æ§ç¯ãããŠããŸãããããã1 ã€ã®å¹³é¢ãåãäžãããšãå
éšã§äœãèµ·ããããšãããšã第 1 ã¬ãã«ã®ãã¹ãŠã®ã¹ãã€ã³ã第 2 ã¬ãã«ã®ãã¹ãŠã®ã¹ãã€ã³ã«æ¥ç¶ããå¿
èŠããããšããããšã§ãã
ããã«ãååãšããŠãããŒã¿ã»ã³ã¿ãŒå ã§ã©ã®ããã«èŠãããã«ã€ããŠããã€ãã®èŠæããããŸããããšãã°ãã±ãŒãã«ãæããŠåŒã£åŒµãã1 ã€ã®é«å¯åºŠããã ããã«ã 1 ã€ã®ããã ããã«ã«å®å šã«åãŸããé·ãã®ç¹ã§åç©åããªããªãããã«ããããšèããŠããŸãããç§ãã¡ã¯ãã®åé¡ã解決ããããšãã§ããŸãããæåã«è«çããããžãèŠããšããã¬ãŒã³ãç¬ç«ããŠãããåãã¬ãŒã³ãç¬èªã«æ§ç¯ã§ããããšãããããŸãããããããã®ãããªãã³ãã«ãè¿œå ããããã ããã«å šäœã 1 ã€ã®ããã ããã«ã«ãã©ãã°ãããå Žåã¯ã1 ã€ã®ãã³ãã«å ã§ç°ãªããã¬ãŒã³ãæ··åããå ã¯ãã¹ã³ãã¯ãã®åœ¢ã§äžéæ§é ãå°å ¥ããŠãçµã¿ç«ãŠãããæ¹æ³ããåããã¯ããå¿ èŠããããŸããããã»ã°ã¡ã³ãäžã§ãããããå¥ã®ã»ã°ã¡ã³ãäžã§ã©ã®ããã«åéãããããšããç¹ã§ç°ãªããŸãããã®ãããã§ããã¹ãŠã®è€éãªã¹ã€ããã³ã°ãã©ãã¯ãè¶ ããªããšããåªããæ©èœãåŸãããŸãã Clos ãããã¯ãŒã¯ã§ã¯ããã¬ãŒã³ãå±éããããšåŒã°ããããšããããŸãããäœããéåžžã«åŒ·ã絡ã¿åãããå¿ èŠãããå Žåããã¹ãŠã 1 ã€ã®ã©ãã¯å ã«éäžãããŸããåã ã®ãªã³ã¯ã«è³ããŸã§é«åºŠã«å解ããããã©ãã¯éã®åãæ¿ããè¡ã£ããããããšã¯ãããŸããã
ã±ãŒãã« ã€ã³ãã©ã¹ãã©ã¯ãã£ã®è«çæ§æã®èŠ³ç¹ããèŠããšã次ã®ããã«ãªããŸããå·ŠåŽã®å³ã§ã¯ããã«ãã«ã©ãŒã®ãããã¯ã¯ã第 2 ã¬ãã«ã®ã¹ãã€ã³ ã¹ã€ããã®ããã㯠(å XNUMX å) ãšãããããã®ã±ãŒãã«ã® XNUMX ã€ã®æã瀺ããŠããŸãããããã®ã±ãŒãã«ã¯ãã¹ãã€ã³ XNUMX ã¹ã€ããã®ãããã¯ããã®æãšäº€å·®ããŠããŸãã ã
å°ããªåè§ã¯äº€å·®ç¹ã瀺ããŸããå·Šäžã¯ããã®ãããªå亀差ç¹ã®å èš³ã§ããããã¯å®éã«ã¯ãã±ãŒãã«ãå®å šã« 512 ã€ã®ã©ãã¯ã«åãŸãããã«å梱å ãã 512 x 2 ããŒãã®ã¯ãã¹ã³ãã¯ã ã¢ãžã¥ãŒã«ã§ãã¹ãã€ã³ 1 ãã¬ãŒã³ã 2 ã€ã ããããŸãããããŠå³åŽã¯ããã®åçã®ã¹ãã£ã³ã§ãã¹ãã€ã³ XNUMX ã¬ãã«ã®è€æ°ã®ããããšããããã¯ãã¹ã³ãã¯ãã«ã©ã®ããã«ããã±ãŒãžåãããããã¹ãã€ã³ XNUMX ã¬ãã«ã«ã©ã®ããã«åœ±é¿ãããã«é¢ããŠãããå°ã詳现ã«ç€ºããŠããŸãã
èŠãç®ã¯ãããªæãã§ãããŸã å®å
šã«çµã¿ç«ãŠãããŠããªãã¹ãã€ã³ 2 ã¹ã¿ã³ã (å·ŠåŽ) ãšã¯ãã¹ã³ãã¯ã ã¹ã¿ã³ããæ®å¿µãªãããããã«ã¯èŠãã¹ããã®ã¯ããŸããããŸããããã®æ§é å
šäœã¯çŸåšãæ¡åŒµäžã®åœç€Ÿã®å€§èŠæš¡ããŒã¿ã»ã³ã¿ãŒã® XNUMX ã€ã«å±éãããŠããŸããããã¯é²è¡äžã®äœæ¥ã§ããèŠãç®ã¯ããã«è¯ããªããèšå
¥å
容ãæ¹åãããã§ãããã
éèŠãªè³ªå: ç§ãã¡ã¯è«çããããžãŒãéžæããç©çåŠãæ§ç¯ããŸãããã³ã³ãããŒã« ãã¬ãŒã³ã¯ã©ããªããŸãã?ããã¯éçšçµéšããããç¥ãããŠããããªã³ã¯ ã¹ããŒã ãããã³ã«ãåªããŠãããšããå ±åãå€æ°ããããããã䜿çšããã®ã¯æ¥œããããšã§ãããæ®å¿µãªãããå¯ã«æ¥ç¶ãããããããžã§ã¯ããŸãæ¡åŒµã§ããŸããããããŠãããã劚ããäž»ãªèŠå ã 1 ã€ãããŸãããããããªã³ã¯ ã¹ããŒã ãããã³ã«ã§ã®ãã©ããã£ã³ã°ã®ä»çµã¿ã§ãããã©ããã£ã³ã° ã¢ã«ãŽãªãºã ãåãäžããŠããããã¯ãŒã¯ãã©ã®ããã«æ§æãããŠããããèŠããšãåã¹ãããã§éåžžã«å€§ããªãã¡ã³ã¢ãŠãããããã³ã³ãããŒã« ãã¬ãŒã³ã«ã¢ããããŒãããã©ããã£ã³ã°ãããã ãã§ããããšãããããŸããå
·äœçã«ã¯ããã®ãããªããããžã¯ããªã³ã¯ã¹ããŒã ãããã³ã«ã®åŸæ¥ã®ãã©ããã£ã³ã° ã¢ã«ãŽãªãºã ãšéåžžã«ããŸãæ··åã§ããŸããã
BGP ã䜿çšããããšãéžæããŸãã BGP ãæ£ããæºåããæ¹æ³ã¯ã倧èŠæš¡ããŒã¿ã»ã³ã¿ãŒã§ã® BGP ã®äœ¿çšã«é¢ãã RFC 7938 ã«èª¬æãããŠããŸããåºæ¬çãªèãæ¹ã¯åçŽã§ãããã¹ãããšã®ãã¬ãã£ãã¯ã¹ã®æå°æ°ãããã³äžè¬ã«ãããã¯ãŒã¯äžã®ãã¬ãã£ãã¯ã¹ã®æå°æ°ãå¯èœã§ããã°éçŽã䜿çšãããã¹ ãã³ãã£ã³ã°ãæå¶ããŸããç§ãã¡ã¯ãéåžžã«æ³šææ·±ããéåžžã«å¶åŸ¡ãããã¢ããããŒãã®é åžããããããã¬ãŒããªãŒãæãã§ããŸããæŽæ°ããããã¯ãŒã¯ãééãããšãã«ãäžåºŠã ãå±éãããããã«ããããšèããŠããŸããããããäžããå§ãŸãå Žåããããã¯äžã«äžãããå±é㯠XNUMX åã ãã§ãããžã°ã¶ã°ããã£ãŠã¯ãªããŸããããžã°ã¶ã°ã¯éåžžã«æªãã§ãã
ãããè¡ãããã«ãåºç€ãšãªã BGP ã¡ã«ããºã ã䜿çšã§ããã»ã©åçŽãªèšèšã䜿çšããŸããã€ãŸãããªã³ã¯ ããŒã«ã«ã§å®è¡ããã eBGP ã䜿çšããèªåŸã·ã¹ãã ã¯æ¬¡ã®ããã«å²ãåœãŠãããŸããToR äžã®èªåŸã·ã¹ãã ã1 ã€ã®ãããã®ã¹ãã€ã³ XNUMX ã¹ã€ããã®ãããã¯å šäœäžã®èªåŸã·ã¹ãã ãããã³ãããå šäœäžã®äžè¬çãªèªåŸã·ã¹ãã ã§ãããã¡ããªãã¯ã®ã BGP ã®éåžžã®åäœã§ããå¿ èŠãªã¢ããããŒããé åžã§ããããšã確èªããã®ã¯é£ãããããŸããã
åœç¶ã®ããšãªãããã¢ãã¬ã¹æå®ãšã¢ãã¬ã¹éçŽã¯ãã«ãŒãã£ã³ã°ã®æ§ç¯æ¹æ³ãšäºææ§ããããã³ã³ãããŒã« ãã¬ãŒã³ã®å®å®æ§ãä¿èšŒãããããã«èšèšããå¿
èŠããããŸãããã©ã³ã¹ããŒãã«ããã L3 ã¢ãã¬ã¹æå®ã¯ãããããžã«é¢é£ä»ããããŠããŸããããããªããã°ãéçŽãå®çŸããããšã¯äžå¯èœã§ãããããããªããšãåã
ã®ã¢ãã¬ã¹ãã«ãŒãã£ã³ã° ã·ã¹ãã ã«å
¥ã蟌ãããšã«ãªããŸãããããŠãã XNUMX ã€ã¯ãæ®å¿µãªããšã«ãã¢ã°ãªã²ãŒã·ã§ã³ã¯ãã«ããã¹ãšããŸãããŸãçµã¿åãããããªããšããããšã§ãããªããªãããã«ããã¹ããããã¢ã°ãªã²ãŒã·ã§ã³ãããå Žåããã¹ãŠãããŸãããããããã¯ãŒã¯å
šäœãå¥å
šã§ããã°ãããã«é害ã¯ãããŸãããæ®å¿µãªããããããã¯ãŒã¯ã«é害ãçºçããããããžã®å¯Ÿç§°æ§ã倱ããããšããã«ããŠããããçºè¡šãããæç¹ã«å°éããããããããã«é²ãå¿
èŠãããå Žæã«é²ãããšãã§ããªããªããŸãããããã£ãŠããã以äžãã«ããã¹ãååšããªãå Žæã«éçŽããã®ãæåã§ãããã®å Žåãããã㯠ToR ã¹ã€ããã§ãã
å®éãéçŽããããšã¯å¯èœã§ãããæ
éã«è¡ã£ãŠãã ããããããã¯ãŒã¯é害ãçºçãããšãã«ãå¶åŸ¡ãããå解ãè¡ãããšãã§ããã°ãããããããã¯éåžžã«é£ããäœæ¥ã§ãããç§ãã¡ã¯ãããå®è¡ã§ãããã©ãããè¿œå ã®èªååããBGP ãæ£ããèµ·åããŠç®çã®åäœãå®çŸããæéã¹ããŒã ãã·ã³ãè¿œå ããããšãå¯èœãã©ããããçåã«æããŸãããæ®å¿µãªãããç¹æ®ãªã±ãŒã¹ã®åŠçã¯éåžžã«æçœã§ã¯ãªãè€éã§ããããã®ã¿ã¹ã¯ã¯å€éšæ·»ä»ãã¡ã€ã«ã BGP ã«æ¥ç¶ããŠãååã«è§£æ±ºãããŸããã
ãã®ç¹ã«é¢ããŠã¯ãRIFT ãããã³ã«ã®æ çµã¿ã®äžã§éåžžã«èå³æ·±ãç 究ãè¡ãããŠãããããã«ã€ããŠã¯æ¬¡ã®ã¬ããŒãã§èª¬æããŸãã
ãã 1 ã€éèŠãªããšã¯ãå€æ°ã®ä»£æ¿ãã¹ãããé«å¯åºŠããããžã§ããŒã¿ ãã¬ãŒã³ãã©ã®ããã«æ¡åŒµããããã§ãããã®å Žåãããã€ãã®è¿œå ããŒã¿æ§é ã䜿çšãããŸããECMP ã°ã«ãŒãã¯ããã¯ã¹ã ããã ã°ã«ãŒããèšè¿°ããŸãã
é害ããªãæ£åžžã«åäœããŠãããããã¯ãŒã¯ã§ã¯ãClos ããããžã«äžãããšã㯠1 ã€ã®ã°ã«ãŒãã®ã¿ã䜿çšããã ãã§ååã§ããããŒã«ã«ã§ãªããã®ã¯ãã¹ãŠããã©ã«ãã§èšè¿°ãããŠãããããäžããããšãã§ããŸããäžããäžããããŠåã«é²ããšããã¹ãŠã®ãã¹ã¯ ECMP ã§ã¯ãªããåäžãã¹ã®ãã¹ã«ãªããŸãããã¹ãŠé 調ãåé¡ã¯ãå€å žç㪠Clos ããããžã®ç¹åŸŽã§ããããã¡ããªãã¯ã®äžéšãèŠããšãã©ã®èŠçŽ ã«ãããŠãããã®äžã®èŠçŽ ãžã®ãã¹ã 1 ã€ãããªãããšã§ãããã®ãã¹ã«æ²¿ã£ãŠé害ãçºçããå Žåããã¡ã¯ããªã®å é ã«ãããã®ç¹å®ã®èŠçŽ ã¯ããŸãã«å£ãããã¹ã®èåŸã«ãããã¬ãã£ãã¯ã¹ã«å¯ŸããŠç¡å¹ã«ãªããŸããããããæ®ãã®éšåã«ã€ããŠã¯æå¹ã§ãããECMP ã°ã«ãŒãã解æããŠæ°ããç¶æ ãå°å ¥ããå¿ èŠããããŸãã
ææ°ã®ããã€ã¹ã§ã¯ããŒã¿ ãã¬ãŒã³ã®ã¹ã±ãŒã©ããªãã£ã¯ã©ã®ããã«ãªããŸãã? LPM (æé·ãã¬ãã£ãã¯ã¹ ããã) ãå®è¡ãããšããã¹ãŠãéåžžã«è¯å¥œã§ã100 ãã¬ãã£ãã¯ã¹ãè¶ ããŠããŸãããã¯ã¹ããããã°ã«ãŒãã«ã€ããŠè©±ããŠããå Žåããã¹ãŠãããã«æªãã2ã4ã§ãããã¯ã¹ã ããã (ãŸãã¯é£æ¥) ã®èª¬æãå«ãããŒãã«ã«ã€ããŠè©±ããŠããå Žåããã㯠16k ãã 64k ã®ç¯å²ã«ãªããŸãããããŠããããåé¡ã«ãªãå¯èœæ§ããããŸãããããŠãããã§èå³æ·±ãäœè«ã«ãªããŸããããŒã¿ã»ã³ã¿ãŒã® MPLS ã¯ã©ããªã£ãã®ã§ãããã?ååãšããŠãç§ãã¡ã¯ãããããããã£ãã®ã§ãã
2ã€ã®ããšãèµ·ãããŸããããã¹ãäžã§ãã€ã¯ãã»ã°ã¡ã³ããŒã·ã§ã³ãè¡ã£ãããããããã¯ãŒã¯äžã§ãã€ã¯ãã»ã°ã¡ã³ããŒã·ã§ã³ãè¡ãå¿
èŠããªããªããŸãããããŸããŸãªãã³ããŒããã®ãµããŒãã¯ããŸãè¯ããããŸããã§ããããMPLS ã䜿çšãããã¯ã€ã ããã¯ã¹ã®ãªãŒãã³å®è£
ã§ã¯ããã«è¯ããããŸããã§ããããããŠãMPLSãå°ãªããšãåŸæ¥ã®å®è£
ã¯ãæ®å¿µãªãã ECMP ãšã®çµã¿åãããéåžžã«äžååã§ããã ããããã
IP ã® ECMP 転éæ§é ã¯æ¬¡ã®ããã«ãªããŸããå€æ°ã®ãã¬ãã£ãã¯ã¹ãåãã°ã«ãŒããšåããã¯ã¹ã ããã ããã㯠(ãŸãã¯é£æ¥ãããã¯ããã€ã¹ããšã«ç°ãªãããã¥ã¡ã³ãã§ç°ãªãåŒã³æ¹ã«ãªãå ŽåããããŸã) ã䜿çšã§ããŸããéèŠãªã®ã¯ããããéä¿¡ããŒããšããŠèšè¿°ãããŠãããæ£ãããã¯ã¹ããããã«å°éããããã« MAC ã¢ãã¬ã¹ãäœã«æžãæããã¹ãããšããããšã§ãã IP ã®å Žåããã¹ãŠãåçŽã«èŠããŸããåãã°ã«ãŒããåããã¯ã¹ã ããã ãããã¯ã«å¯ŸããŠéåžžã«å€ãã®ãã¬ãã£ãã¯ã¹ã䜿çšã§ããŸãã
å€å
žç㪠MPLS ã¢ãŒããã¯ãã£ã¯ãçºä¿¡ã€ã³ã¿ãŒãã§ã€ã¹ã«å¿ããŠãã©ãã«ãç°ãªãå€ã«æžãæããããšãã§ããããšãæå³ããŸãããããã£ãŠãå
¥åã©ãã«ããšã«ã°ã«ãŒããš Next Hops ãããã¯ãä¿æããå¿
èŠããããŸãããããŠãæ®å¿µãªããšã«ãããã¯ã¹ã±ãŒã«ããããŸããã
ç§ãã¡ã®èšèšã§ã¯çŽ 4000 åã® ToR ã¹ã€ãããå¿ èŠã§ãã¹ãã€ã³ 64 ããã¹ãã€ã³ 1 ã«åãã£ãŠç§»åãããšãæå€§å¹ ã¯ 2 ECMP ãã¹ã ã£ãããšãç°¡åã«ããããŸãã ToR ãæã€ãã¬ãã£ãã¯ã¹ã XNUMX ã€ã ãåé€ããããšããŠããECMP ã°ã«ãŒãã® XNUMX ã€ã®ããŒãã«ã«ãããããŠå ¥ãããšãã§ãããã¯ã¹ã ããã ããŒãã«ã«ã¯ãŸã£ããå ¥ããŸããã
ã»ã°ã¡ã³ã ã«ãŒãã£ã³ã°ã®ãããªã¢ãŒããã¯ãã£ã«ã¯ã°ããŒãã« ã©ãã«ãå«ãŸããããããã¹ãŠã絶æçãšããããã§ã¯ãããŸããã圢åŒçã«ã¯ãããããã¹ãŠã® Next Hops ãããã¯ãå床æããããããšãå¯èœã§ãããããè¡ãã«ã¯ãã¯ã€ã«ã ã«ãŒã ã¿ã€ãã®æäœãå¿
èŠã§ããã€ãŸããã©ãã«ãååŸããç¹å®ã®å€ãæå®ããã«åãã©ãã«ã«æžãæããŸããããããæ®å¿µãªãããããã¯å©çšå¯èœãªå®è£
ã«ã¯ããŸãååšããŸããã
ãããŠæåŸã«ãå€éšãã©ãã£ãã¯ãããŒã¿ã»ã³ã¿ãŒã«åã蟌ãå¿ èŠããããŸããã©ããã£ãŠããã®ïŒä»¥åã¯ããã©ãã£ãã¯ã¯äžãã Clos ãããã¯ãŒã¯ã«å°å ¥ãããŠããŸãããã€ãŸãããã¡ããªãã¯ã®äžéšã«ãããã¹ãŠã®ããã€ã¹ã«æ¥ç¶ãããšããž ã«ãŒã¿ãŒããããŸããããã®ãœãªã¥ãŒã·ã§ã³ã¯ãå°èŠæš¡ããäžèŠæš¡ã®ãµã€ãºã§éåžžã«ããŸãæ©èœããŸããæ®å¿µãªããããã®æ¹æ³ã§ãã©ãã£ãã¯ããããã¯ãŒã¯å šäœã«å¯Ÿç§°çã«éä¿¡ããã«ã¯ããã¡ããªãã¯ã®äžéšã®ãã¹ãŠã®èŠçŽ ã«åæã«å°éããå¿ èŠãããããããã®èŠçŽ ã 100 ãè¶ ããå Žåã¯ã倧èŠæš¡ãªèŠçŽ ãå¿ èŠã«ãªãããšãããããŸãããšããžã«ãŒã¿ãŒäžã®åºæ°ãäžè¬ã«ãããã«ã¯ã³ã¹ããããããŸãããšããž ã«ãŒã¿ãŒã®æ©èœãé«ããããŒãã®äŸ¡æ Œãé«ãããã¶ã€ã³ãããŸãçŸãããªãããã§ãã
å¥ã®ãªãã·ã§ã³ã¯ããã®ãããªãã©ãã£ãã¯ãäžããéå§ããããšã§ãã Clos ããããžããäžãããã€ãŸã ToR åŽããæ¥ããã©ãã£ãã¯ã 2 åã®ç¹°ãè¿ãã§ãã¡ããªãã¯ã®ãããå šäœã®ã¬ãã«éã§åçã«åæ£ããããããã¯ãŒã¯å šäœã«è² è·ãããããããªæ¹æ³ã§æ§ç¯ãããŠããããšã確èªããã®ã¯ç°¡åã§ãããããã£ãŠãå€éšæ¥ç¶ãæäŸããç¹å¥ãªã¿ã€ãã®ããããEdge Pod ãå°å ¥ããŸãã
ãã 1 ã€ã®éžæè¢ããããŸããããã¯ãããšãã° Facebook ãè¡ã£ãŠããããšã§ãã圌ãã¯ããããã¡ããªã㯠ã¢ã°ãªã²ãŒã¿ãŒãŸã㯠HGRID ãšåŒã³ãŸããè€æ°ã®ããŒã¿ã»ã³ã¿ãŒãæ¥ç¶ããããã«ãè¿œå ã®ã¹ãã€ã³ ã¬ãã«ãå°å ¥ãããŠããŸãããã®èšèšã¯ãã€ã³ã¿ãŒãã§ã€ã¹ã§ã®è¿œå æ©èœãã«ãã»ã«åã®å€æŽããªãå Žåã«å¯èœã§ãããããè¿œå ã®ã¿ãããã€ã³ãã§ããå Žåãããã¯å°é£ã§ããéåžžãããŒã¿ã»ã³ã¿ãŒã®ããŸããŸãªéšåãåé¢ããæ©èœãšäžçš®ã®èãååšããŸãããã®ãããªèã倧ããããããšã«æå³ã¯ãããŸããããäœããã®çç±ã§ãããæ¬åœã«å¿ èŠãªå Žåã¯ããããåãé€ããã§ããã ãå¹ ãåºãããŠå®¿äž»ã«ç§»ãå¯èœæ§ãæ€èšããã®ã¯çã«ããªã£ãŠããŸããããã¯ãããšãã°ãå€ãã®ã¯ã©ãŠã ãªãã¬ãŒã¿ãŒã«ãã£ãŠè¡ãããŸãããããã«ã¯ãªãŒããŒã¬ã€ãããããã¹ãããå§ãŸããŸãã
ã©ã®ãããªçºå±ã®æ©äŒãããã§ãããã?ãŸã第äžã«ãCI/CD ãã€ãã©ã€ã³ã®ãµããŒããæ¹åããŸããç§ãã¡ã¯ããã¹ãããæ¹æ³ã§é£è¡ãããã¹ãããæ¹æ³ã§é£è¡ããããšèããŠããŸããã€ã³ãã©ã¹ãã©ã¯ãã£ã倧èŠæš¡ã§ããããã¹ãçšã«ãããè€è£œããããšãäžå¯èœã§ãããããããã¯ããŸãããŸããããŸããããã¹ãèŠçŽ ãåé€ããã«æ¬çªã€ã³ãã©ã¹ãã©ã¯ãã£ã«å°å
¥ããæ¹æ³ãç解ããå¿
èŠããããŸãã
ããåªããèšæž¬åšãããåªããã¢ãã¿ãªã³ã°ãäžå¿ èŠã«ãªãããšã¯ã»ãšãã©ãããŸãããåé¡ã¯ãåªåãšå©çã®ãã©ã³ã¹ã§ããçžå¿ã®åªåã§ãããè¿œå ã§ããã°ãéåžžã«è¯ãã§ãã
ãããã¯ãŒã¯ ããã€ã¹çšã®ãªãŒãã³ ãªãã¬ãŒãã£ã³ã° ã·ã¹ãã ã RIFT ãªã©ãããåªãããããã³ã«ãšããåªããã«ãŒãã£ã³ã° ã·ã¹ãã ãããåªãã茻茳å¶åŸ¡ã¹ããŒã ã®äœ¿çšãšãããããå°ãªããšãããã€ãã®æç¹ã§ã¯ã©ã¹ã¿ãŒå ã« RDMA ãµããŒããå°å ¥ããããã®ç 究ãå¿ èŠã§ãã
ããã«å°æ¥ãèŠæ®ãããšãé«åºŠãªããããžãå¿ èŠã«ãªããå Žåã«ãã£ãŠã¯ãªãŒããŒãããã®å°ãªããããã¯ãŒã¯ãå¿ èŠã«ãªããŸããæ°é®®ãªãã®ãšããŠã¯ãHPC Cray Slingshot ã®ãã¡ããªã㯠ãã¯ãããžã«é¢ããåºçç©ãæè¿åºçãããŸãããããã¯ã³ã¢ãã£ã㣠ã€ãŒãµããããããŒã¹ã«ããŠããŸããããªãã·ã§ã³ã§ã¯ããã«çãããããŒã䜿çšããããšãã§ããŸãããã®çµæããªãŒããŒããããåæžãããŸãã
ãã¹ãŠã¯å¯èœãªéãã·ã³ãã«ã«ä¿ã€å¿
èŠããããŸããããã以äžã«ã·ã³ãã«ã«ããå¿
èŠã¯ãããŸãããè€éãã¯ã¹ã±ãŒã©ããªãã£ã®æµã§ããã·ã³ãã«ããšèŠåæ£ããæ§é ãç§ãã¡ã®å³æ¹ã§ããã©ããã§ã¹ã±ãŒã«ã¢ãŠãã§ããå Žåã¯ãã¹ã±ãŒã«ã¢ãŠãããŠãã ããããããŠäžè¬çã«ãä»ãããã¯ãŒã¯ ãã¯ãããžãŒã«æºããããšã¯çŽ æŽãããããšã§ããèå³æ·±ãããšãããããèµ·ãã£ãŠããŸããããããšãã
åºæïŒ habr.com